View Full Version : [Space] NASA - STS-127 - ISS-2J/A (Endeavour)
NASA STS-127 - ISS Assembly Mission 2J/A
http://collectspace.com/review/sts127_patch01.jpg
Benvenuti nella discussione ufficiale dell'STS-127, missione di costruzione ISS J2/A.
La missione ha come obbiettivo primario l'installazione del modulo logistico Kibo JEM EF (Kibo Japanese Experiment Module Exposed Facility).
Dati Missione
Lancio previsto: 15 luglio 2009, 6:03 PM EDT (00:03 CEST)
Atterraggio previsto: 31 luglio 2009, 10:48 AM EDT (16:48 CEST)
Durata missione prevista: 16 giorni
Missione Programma STS: STS-127 (127° volo Shuttle, 23° volo OV-105)
Missione Programma ISS: J2/A
Orbiter: Endeavour (OV-105)
Launch Pad: 39A
Durata: 16 giorni (SSPT)
Inclinazione/Altitudine: 51.6°/122 miglia nautiche
Payload principale:
Kibo Japanese Experiment Module Exposed Facility (JEM EF)
Equipaggio
Commander Mark L. Polansky
Pilot Douglas G. Hurley
Mission specialist 1 David A. Wolf
Mission specialist 2 Christopher J. Cassidy
Mission specialist 3 Julie Payette
Mission specialist 4 Thomas H. Marshburn
Launching ISS Expedition 19 Crew Member: Timothy L. Kopra
Landing ISS Expedition 18 Crew Member: Timothy L. Kopra
http://spaceflight1.nasa.gov/gallery/images/shuttle/sts-127/lores/sts127-s-002.jpg
Assembly Mission J2/A
http://www.nasa.gov/images/content/160523main_jsc2006e43509_low.jpg (http://www.nasa.gov/images/content/160544main_jsc2006e43509_high.jpg)
(Cliccare sulla foto per vederla in alta risoluzione)
Altre informazioni
SpaceFlightNow.com Mission Coverage homepage: http://spaceflightnow.com/shuttle/sts127
Master Flight Plan (SpaceFlightNow.com
http://spaceflightnow.com/shuttle/sts127/fdf/127flightplan.html
Press Kit
http://www.nasa.gov/pdf/358018main_sts127_press_kit.pdf
Previsioni Meteo - Lancio (KSC)
http://www.patrick.af.mil/shared/media/document/AFD-070517-025.pdf
NASA TV
Programma
PDF: http://www.nasa.gov/tvschedule/pdf/tvsked_rev0.pdf
URL: http://www.nasa.gov/multimedia/nasatv/MM_NTV_Schedule.html
NASA TV - Real Media: http://www.nasa.gov/ram/35037main_portal.ram
NASA TV - Windows Media: http://www.nasa.gov/55644main_NASATV_Windows.asx
NASA TV - Real Audio: http://www.nasa.gov/ram/55643main_NASATV_Audio_Only.ram
La ISS riflessa sui caschi nella foto dell'equipaggio è una novità? Non mi pare di averla mai vista nei ritratti precedenti..
Credo anch'io sia una novità... non ricordo infatti...
SFN:
Shuttle Endeavour's launch countdown gets underway
http://www.spaceflightnow.com/news/images/ni0906/10shuttlesunset_400.jpg
Countdown clocks at the Kennedy Space Center have started ticking toward Saturday morning's scheduled launch of the space shuttle Endeavour and the marathon 16-day mission to the International Space Station.
http://www.spaceflightnow.com/shuttle/sts127/090610count/
STS-127 scrubbed due to GUCP leak - launch moves to NET June 17
In a similar event to STS-119’s scrub, Endeavour’s launch has been delayed due to a significant leak registered in the region of the Ground Umbilical Carrier Plate (GUCP). Engineers will dismantle the troublesome hardware at the pad, prior to the next potential launch attempt on a current target of NET (No Earlier Than) June 17.
STS-127 Scrub/GUCP Leak:
Tanking had been proceeding normally, with good voltages recorded on the Engine Cut Off (ECO) sensors during their regular checks as the tank was loaded with LH2 and LOX.
However, leak detectors tripped around the GUCP area once tanking had reached a similar stage as observed with STS-119 - with the hydrogen tank nearing the 98 percent filled - when a leak was also detected in the hardware associated with GUCP.
The leak was well above both the Launch Commit Criteria (LCC) of 2 percent concentration, and even much higher than the 4 percent level - which is the point a scrub is the only option available to managers.
At the time of the initial leak detection, engineers called for the GUP vent valve to be cycled four times, in order to see if the hydrogen leak could be reduced to acceptable levels, as they did with STS-119. Following this process, and with no resolution to the leak measurements, the call was made to scrub the launch and detank the ET.
The forward plan is to dismantle the GUCP hardware once the tank is inert - a process that can take nearly a day.
Once the QD (Quick Disconnect) has been demated, engineers will be able to take a close look at both the alignment of the hardware, and the seal - with the latter a likely cause of the leak.
The Mission Management Team (MMT) will meet on Sunday to discuss launch options, which will include discussions over the status of the range - due to be handed over to the Atlas V/Lunar Reconnaissance Orbiter (LRO) launch, currently targeting the same date as the new STS-127 NET.
ET-131 GUCP Installation Issue:
A problem with the GUCP seal and alignment between the Quick Disconnect and the External Tank would still be surprising, following extensive checks - especially on Endeavour’s ET-131 tank - as part of the STS-119 investigation into root cause.
Indeed it was the rollout to Pad 39B as part of Endeavour’s STS-400 Launch On Need (LON) requirement that allowed engineers the opportunity to take a very close look at the GUCP mating process, required due to the lack of a GUCP test fixture at the Kennedy Space Center.
Part of the mitigation process mainly related to measurements, and included tape being added to the hardware to ensure the alignment of the hardware and the ET remained the same over the period the stack remained at the pad.
However, an issue was already noted on the STS-127 Agency Flight Readiness Review (FRR) presentation by Lockheed Martin/ET, relating to the installation of the GUCP hardware on Endeavour’s tank.
“ET-131 Ground Umbilical Carrier Plate (GUCP) Installation, Issue: Interference between GUCA (ground umbilical carrier assembly) and ET-131 right hand hinge support observed during mate GUCP (Ground Umbilical Carrier Plate) installation in VAB (Vehicle Assembly Building),” noted the FRR presentation, available on L2.
“Installation sequence verifies contact with hinge supports and no interference between pivot assembly and hinge bracket. Interference occurred on RH (Right Hand) side of RH pivot assembly to RH inside of bracket.
“Concern: Interference not allowed at hinge location per engineering. Potential to induce un-intended loading on pyro bolt assembly and potentially affect separation mechanism
“Actions Taken / Status: GUCP was removed and different unit installed and interference remained. Both GUCP assemblies measured and within engineering tolerance. Inspection performed at KSC to assist in investigation of root cause.
“Visual inspection indicates slight misalignment of carrier plate with panel cut-out. Laser measurements at KSC confirmed misalignment.”
This issue still shouldn’t be fully related to Friday’s scrub, after a good alignment was confirmed prior to the stack heading out to the pad. However, this tank - as a result of the aforementioned issue - was debuting a modification on the associated GUCP hardware.
c1“Pivot assembly modified (and successfully installed) by locally machining outboard surface (0.1” removed) to create required gap (0.035 gap provided). Stress analysis shows adequate FS for modified configuration (assuming single pivot assembly carries total reaction),” added the FRR presentation.
“Repair configuration does not impact GUCP release mechanism or sealing interface between flight and ground side. Installation sequence verifies proper alignment and rotational capability. Root cause investigation in-work - Most likely attributed to ETCA misalignment within panel cutout.
“Similar condition not observed at MAF (Michoud Assembly Facility) to date (ET-139 and ET-132 visual). Laser measurements being performed on all in-process tanks at MAF. Spare GUCP being used to support fit checks at MAF where possible (i.e. vertical orientation only).”
Interestingly, what appears to be a leak from the right hand pivot area of the assembly was captured on cameras monitoring the associated hardware prior to the scrub being called, although it is too early to know if this was the actual leaking event.
STS-119/ET-127 GUCP Overview:
The scrub related to STS-119’s ET-127 was only the second tanking that suffered a leak over the previous 31 loadings. The STS-127 leak is believed to have been larger than that seen during Discovery’s countdown.
c5“STS-119 / ET-127 Performance Summary: Pre-launch: 1st loading resulted in scrub/LCC (Launch Commit Criteria) violation due to GH2 leakage at GUCA (>40,000 ppm. Flight seal/QD (Quick Disconnect) replaced,” noted a post mission IFA (In Flight Anomaly) review presentation on L2, written by the MAF (Michoud Assembly Facility).
“Leakage occurred during transition from fast fill to topping. Vent valve opened when 98 percent level sensor indicated wet. Detected by leak detectors (LD 23 & 25) located in ground umbilical shroud. Isolates leak to either ground side quick disconnect (QD) or interface with flight seal.
“Contingency plans (vent valve cycling) unsuccessful in controlling leakage within acceptable limits. Launch scrubbed, flight seal/disconnect replaced. No GH2 leakage observed during subsequent loading. No other anomalous performance observed during loading.”
No root cause was confirmed, although the leading candidate has been noted on the recent documentation relating to the incident.
“No first-time hardware changes implemented for STS-119/ET-127 GH2 vent system. 31 previous loadings with only 1 leak observed (13,500 ppm). Previous leaks also observed during fast fill to topping transition,” added the MAF presentation.
c3“Most probable cause identified as momentary breach in flexible flight-seal to bellows probe due to ‘thermal shock’ of GH2/LH2 with vent valve in open position.
“Significant Disassembly Observations: Lower left pad was hard against skin. Other locations were not touching (0.014 - 0.030 gap / 0.001 requirement) indicating a pull downward and to the left. Peripheral seal compressed more on left side and toward bottom of GUCP.”
Interestingly, the pivot assembly - this time on the left hand side, as opposed to the right hand side with the aforementioned installation issues noted on the STS-127 FRR presentation - gains a mention in the STS-119 IFA review.
“Left side pivot assembly in hard contact with pivot pin (pin would not rotate). Stain observed on external surface of bellows guard and peripheral seal at 6 o’clock position. Flight-side seal asymmetrically compressed at 3, 7 and 8 o’clock positions.”
Although a root cause was not found, the leading candidates from the STS-119 event will provide helpful data to managers assessing the forward plan for STS-127’s next launch attempt - even if nothing obvious is found once the GUCP is demated.
Further updates will follow.
Fonte (http://www.nasaspaceflight.com/2009/06/sts-127-scrubbed-due-to-gucp-leak-launch-moves-to-net-june-17/)
Posto anche l'articolo di
SFN:
Space shuttle Endeavour launch postponed by leak
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: June 13, 2009
Launch of the shuttle Endeavour, grounded by a gaseous hydrogen leak during fueling Saturday, is off until Wednesday at the earliest, NASA officials say. But because of the already planned launch of NASA's Lunar Reconnaissance Orbiter satellite Wednesday, the shuttle team could be delayed to June 20, the last day this month Endeavour can be launched.
http://www.spaceflightnow.com/shuttle/sts119/090312update/armclose.jpg
The file image shows the launch pad's gaseous hydrogen vent arm that connects the pad tower to the shuttle's tank. Credit: NASA TV
http://www.spaceflightnow.com/shuttle/sts127/090613scrub/
danny2005
14-06-2009, 10:19
ho sentito che il lancio è stato rinviato a oggi.
A che ora?
ho sentito che il lancio è stato rinviato a oggi.
A che ora?
?
forse mercoledi' se va bene
Esatto, il lancio è fissato per NET mercoledì 17.
Comunque non ci sono più i lanci annullati (http://www.youtube.com/watch?v=3VELYTzUrjc) di una volta :O :D
Trascrizione della conferenza stampa di oggi/ieri (fonte (http://forum.nasaspaceflight.com/index.php?topic=17439.0)):
Leroy, Pete and Kathy Winters (weather) in attendance.
Leroy: Engineers worked very hard on a schedule for a launch opportunity. Became clear that the earliest opportunity will be June 17. Range conflict with LRO, began discussions on priorities.
Vehicle is in great shape. No other issues being worked bar the GUCP. Team is marching down towards the 17th from a processing standpoint. LRO is still processing to the 17th. The range will have to reconfigure for the LRO tomorrow, so decision point to go with the shuttle on the 17th, which would give LRO on the 19th and 20th. If LRO on the 17th, Shuttle gets only the 20th before (beta angle cutout).
Plan A: STS-127 on the 17th.
Plab B: LRO on the 17th.
They will see how the processing goes, think they can do the 17th if they get good weather and good work on the GUCP.
Pete:
Followed the same path as STS-119 GUCP issue with scrub turnaround. QD and Seal will be replaced. Recaps what we already know.
Vent link leak checks and torque checks aiming to resume at T-11 hours on Tuesday.
Observations of small gaps on right hand pivot assembly - which makes it look like it pulled away slightly. Gaps were only on the right side. (Pivot picture: http://www.nasaspaceflight.com/2009/06/sts-127-scrubbed-due-to-gucp-leak-launch-moves-to-net-june-17/)
June 17: 05:35am Eastern, Prefered in window launch at 05:40am Eastern.
TSM has a hydraulic leak - doesn't seem bad.
Kathy:
Weather looks good, but concerned about showers due to a front coming into the area. 30 percent chance of no go weather on the 18th. 40 percent no go for the Atlas/LRO later in the day (if they get the range).
If STS-127 moves to the 20th, 20 percent no go weather.
Q&A:
Decision point for the range tomorrow afternoon for the reconfiguation. But still evaluating the latest time they need an answer.
Gerst will make the call assisted by Doug Cook.
Leroy believes Shuttle has priority over LRO, but is diplomatic by noting more launch opportunities with shuttle attempting 17th, LRO 19th, 20th. Plus if there's another leak on the evening of the 16th, range could reconfig for LRO by the 18th.
Timeline for GUCP QD and Seal R&R by early tomorrow about 6am local. Confidence comes after remate and leak checks - which will be early Tuesday morning.
Pete calls it an interesting dance.
Following STS-119's GUCP R&R by the letter.
Leroy: Sooner is better, but if they move into July it's always harder as the launch time moves into the evening, and moves earlier, into thunderstorm threats.
Notes pressure on manifest relating to 2010, soon they would get to a point where he has no more flexibility.
However, if STS-127 moves to July 11 NET, STS-128 would move to August 20th. That would cause a little bit of a ripple, but not a huge effect on that manifest stretch. At some point, this and some other delay, will start to become a problem for the downstream manifest.
Pete is assuming an alignment issue. Will check the seal they are replacing, but noted R&R solved the STS-119 issue (that had no specific root cause).
Leroy steps in and says they will continue to assess and look for root cause. Launching without root cause is fine as they have LCC in place for leaks.
Some consideration to reducing mission content to launch on the 21st. (Undock one day earlier). That would remove EVA-5 from the schedule and change it to a contingency EVA for any high priority tasks missed during EVA-1 through 4.
Still some work to do on that option if required. For now, assuming only good until the 20th.
Repeat questions.
Then on STS-400 - Leroy says he really wouldn't want to speculate.
And that's over.
:sperem:
Speriamo vada per mercoledì
Gli ingegneri/tecnici ci stanno dando dentro: su nasaspaceflight (http://forum.nasaspaceflight.com/index.php?topic=17439.390) si vede come abbiano continuato a lavorare* sul GUCP per tutta la notte.
* con opportuni turni: le regole introdotte post-Challenger vietano di lavorare per "troppe" ore.
SFN:
NASA sets Wednesday launch date for shuttle Endeavour
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: June 15, 2009
NASA managers today formally cleared the shuttle Endeavour for a delayed launch Wednesday on a space station assembly mission. Launch of the agency's Lunar Reconnaissance Orbiter was delayed to June 18 or 19 to make room for the shuttle in an effort to maximize launch opportunities for both missions.
http://www.spaceflightnow.com/shuttle/sts127/090615newdate/
Comunque non ci sono più i lanci annullati (http://www.youtube.com/watch?v=3VELYTzUrjc) di una volta :O :D
OMG :eek: Ma che gli è successo per fare un abort così pericoloso?!
Tubo Catodico
16-06-2009, 09:59
Scusate mi è venuto un dubbio da ignorante e spero di non inquinarvi il thread ponendovi una domanda.
Stavo osservando i filmati dei vari lanci dello shuttle ed ho notato che durante la partenza vengono tenuti accesi anche i motori dello shuttle stesso, oltre ai razzi del vettore. Dato che (immagino) la potenza necessaria a vincere la forza di gravità provenga quasi interamente dal vettore mi chiedevo a che scopo accendere anche i motori dello shuttle. L'unica risposta che sono riuscito a darmi è che servano a bilanciare i pesi di tutto il sistema shuttle-vettore altrimenti sbilanciato verso lo shuttle.
Grazie in anticipo a chiunque abbia la pazienza di rispondermi e scusate l'intromissione!
Scusate mi è venuto un dubbio da ignorante e spero di non inquinarvi il thread ponendovi una domanda.
Stavo osservando i filmati dei vari lanci dello shuttle ed ho notato che durante la partenza vengono tenuti accesi anche i motori dello shuttle stesso, oltre ai razzi del vettore. Dato che (immagino) la potenza necessaria a vincere la forza di gravità provenga quasi interamente dal vettore mi chiedevo a che scopo accendere anche i motori dello shuttle. L'unica risposta che sono riuscito a darmi è che servano a bilanciare i pesi di tutto il sistema shuttle-vettore altrimenti sbilanciato verso lo shuttle.
Grazie in anticipo a chiunque abbia la pazienza di rispondermi e scusate l'intromissione!
Il sistema Shuttle è spinto da:
- i 3 SSME (Space shuttle Main Engines) I motori montati sull'Orbiter
- i 2 SRB (Solid Rocket Boosters) I boosters a comustibile solido montati lateralmente all'ET, il grosso serbatoio centrale.
Gli SRB forniscono all'incirca il 70% della spinta per il primi 2 minuti di ascesa, gli SSME invece si accendono a T-6 sec. e restano accesi fino al MECO (main engines cut-off) ovvero quando l'Orbiter ha raggiunto la quota desiderata.
Tutte le successive manovre in orbita vengono effettuate con gli OMS (Orbital Manouvering Systems)
In questo thread (http://www.hwupgrade.it/forum/showthread.php?t=749015) (più generico) puoi trovare ulteriori informazioni sul programma Space Shuttle (STS)
A questa pagina (http://en.wikipedia.org/wiki/Space_shuttle) invece puoi trovare una descrizione più ampia del sistema STS
OMG :eek: Ma che gli è successo per fare un abort così pericoloso?!
I sensori hanno rilevato dei valori fuori limite relativi alla turbopompa dell'ossigeno e hanno annullato il lancio:
The automatic abort was initiated by the onboard General Purpose Computers (GPC) when the discharge temperature on MPS SSME Main Engine #3 High Pressure Oxidizer Turbopump (HPOT) exceeded its redline value. The HPOT typically operates at 28,120 rpm and boosts the liquid oxygen pressure from 422 to 4,300 psi (2.91 to 29.6 MPa). There are 2 sensor channels measuring temperature on the HPOT. The B channel indicated a redline condition while the other was near redline conditions. The temperature at shutdown was at 1563 degrees Rankine (868 K), while a normal HPOT discharge temperature is around 1403 °R (779 K). The readline limit to initiate a shutdown is at 1560 °R (867 K). This limit increases to 1760 °R (980 K) at T-1.3 s (5.3 s after Main Engine Start). Main Engine #3 (SN 2032) has been used on 2 previous flights with 2,412 seconds of hot-fire time and a total of 8 starts. This was the first flight for the HPOT on Main Engine (SSME) #3.
Il cedimento di una High Pressure Oxidizer Turbopump è da evitare visto che gli altissimi regimi di rotazione (28000 giri al minuto) la trasformerebbero in una "bomba".
Altri abort "negli ultimi 6 secondi" sono avvenuti per STS-41-D, STS-51-F (dove tra l'altro un SSME si è spento in volo con conseguente ATO), STS-55 e STS-51.
Scusate mi è venuto un dubbio da ignorante e spero di non inquinarvi il thread ponendovi una domanda.
Stavo osservando i filmati dei vari lanci dello shuttle ed ho notato che durante la partenza vengono tenuti accesi anche i motori dello shuttle stesso, oltre ai razzi del vettore. Dato che (immagino) la potenza necessaria a vincere la forza di gravità provenga quasi interamente dal vettore mi chiedevo a che scopo accendere anche i motori dello shuttle. L'unica risposta che sono riuscito a darmi è che servano a bilanciare i pesi di tutto il sistema shuttle-vettore altrimenti sbilanciato verso lo shuttle.
Grazie in anticipo a chiunque abbia la pazienza di rispondermi e scusate l'intromissione!
Gli SSME (http://it.wikipedia.org/wiki/SSME) vengono avviati a terra per diversi motivi*:
- Come avrai notato vengono prima avviati gli SSME e poi solo dopo qualche secondo gli SRB (http://it.wikipedia.org/wiki/Space_Shuttle_Solid_Rocket_Booster). In questo modo i sistemi di controllo possono annullare il lancio se i sensori rilevano delle anomalie (nel video linkato prima si vede proprio quello).
- Gli SSME sono progettati per essere avviati a terra. Modificarli per farli partire in volo richiederebbe una riprogettazione abbastanza estesa.
- Non ho verificato, ma credo sia più efficiente accendere tutto subito che portarsi i 3 SSME in quota per poi accenderli li.
* sono quelli che conosco. Ci sarà sicuramente qualche altro aspetto (tra cui probabilmente le problematiche di controllo che citavi).
Gli SSME (http://it.wikipedia.org/wiki/SSME) vengono avviati a terra per diversi motivi*:
Io aggiungerei sicuramente che sono necessari per andar su. ;)
Se non fossero accesi sarebbero necessari SRB più grossi per sopperire a quel 30% di spinta che gli SSME forniscono al decollo.
Pare inoltre che i motori a combustibile fluido (liquido o gassoso) abbiano una spinta molto più "uniforme" che imprime meno vibrazioni al vettore. Il solo uso di stadi a combustibile solido per vettori per uso umano sta creando notevoli grattacapi agli ingegneri dell'Ares I (gli occupanti potrebbero perdere conoscenza o essere addirittura feriti per le vibrazioni e accelerazioni violente che un motore a combustibile solido può avere).
Io aggiungerei sicuramente che sono necessari per andar su. ;)
Se non fossero accesi sarebbero necessari SRB più grossi per sopperire a quel 30% di spinta che gli SSME forniscono al decollo.
Vero.
Pare inoltre che i motori a combustibile fluido (liquido o gassoso) abbiano una spinta molto più "uniforme" che imprime meno vibrazioni al vettore. Il solo uso di stadi a combustibile solido per vettori per uso umano sta creando notevoli grattacapi agli ingegneri dell'Ares I (gli occupanti potrebbero perdere conoscenza o essere addirittura feriti per le vibrazioni e accelerazioni violente che un motore a combustibile solido può avere).
Lo Shuttle e Ariane 5 gestiscono le "vibrazioni" dei motori a combustibile solido grazie ad un collegamento solido-stadio liquido-solido appositamente progettato per mitigarle (oltre a tenere insieme il tutto). In Ares 1 questo approccio classico non si può usare e da qui tutti i casini conseguenti..
Lo Shuttle e Ariane 5 gestiscono le "vibrazioni" dei motori a combustibile solido grazie ad un collegamento solido-stadio liquido-solido appositamente progettato per mitigarle (oltre a tenere insieme il tutto). In Ares 1 questo approccio classico non si può usare e da qui tutti i casini conseguenti..
Interessante, non sapevo!
chiedo scusa a tutti per l'off-topic (magari si può riprendere il discorso nei topic dedicati :) )
Tubo Catodico
16-06-2009, 16:47
Grazie mille a tutti per la disponibilità e scusate per il piccolo OT.
http://www.nasa.gov/images/content/360833main_image_1389_946-710.jpg
(http://www.nasa.gov/multimedia/imagegallery/image_feature_1389.html)
Preparing Endeavour
In this image, taken June 14, workers on Kennedy Space Center's Launch Pad 39A prepare to remove the 7-inch quick disconnect and flight seal from the Ground Umbilical Carrier Plate, or GUCP, on space shuttle Endeavour's external fuel tank. Teams are removing the hardware to change out seals in the internal connection points. The GUCP is the overboard vent to the pad and the flare stack where the vented hydrogen is burned off.
On June 12, a hydrogen leak caused the STS-127 mission to be scrubbed. Endeavour is scheduled to launch on its STS-127 mission on June 17, 2009, at 5:40 a.m. EDT.
danny2005
16-06-2009, 22:47
Quindi alle 11 e 40 di mattina è previsto il lancio.......
Eh si, e purtroppo per questa volta non potrò seguire nulla (finchè sono a lavorare)... :muro: :O
:)
niente non si parte e per lo stesso motivo. prossima data 11 Luglio.
Infatti...
SNF:
Hydrogen leak scrubs shuttle Endeavour launch again
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: June 17, 2009
After a lengthy fueling delay because of stormy weather, launch of the shuttle Endeavour on a space station assembly mission was scrubbed early Wednesday when a presumably repaired hydrogen vent line umbilical began leaking potentially dangerous vapor for the second launch try in a row.
http://www.spaceflightnow.com/shuttle/sts127/090617scrub/
STS-127: Don’t worry about the schedule, let’s fix the problem - Cain (http://www.nasaspaceflight.com/2009/06/sts-127-dont-worry-schedule-fix-the-problem-cain/)
Endeavour will launch only when engineers are happy they have a full understanding of the Ground Umbilical Carrier Plate (GUCP) leak, even if that means slipping STS-127 past the current July 11 NET (No Earlier Than) launch target. A troubleshooting plan is currently being drawn up - which is understood to include a tanking test - with the aim of finding a root cause of the leaks.
STS-127 Current Status:
Endeavour’s second launch attempt was scrubbed due to similar leak from the gaseous hydrogen system to that which was observed during the first tanking of External Tank ET-131, just a few days previous.
On both occasions, a scrub was called due to the breach of the pre-defined LCC (Launch Commit Criteria) limits, which protect against leak readings greater than 40,000 PPM - or 4 percent.
“This time the leak started during fastfill which is a signature we’ve never seen before (relating to the difference between the previous leaks, observed as the tank loading process moved from fastfill to topping/stable replenish of the LH2). During fast fill we leaked to approx. 15,000 ppm, we are allowed to get to 40,000 ppm before a violation causes safing,” noted a scrub outline on L2.
“Once we reached replenish, we violated the 40.000ppm like we’ve typically seen in the past. Leak eventually trended upward to 60,000 ppm. Subsequent vent valve cycling saw somewhat of a decrease. Test team analysis indicated that the increase is about half of that seen (on the first launch attempt).
“A troubleshooting plan will have to be formulated as this is a leak signature that has never been observed before.”
“Vehicle was powered down at 03:15L (Friday). Hooked up the OBMUU and have started the PRSD (Power Reactant Storage and Distributation) offload. Will vent the COPVs (Composite Overwrap Pressure Vessels) late on Friday,” added Friday processing information on L2. “The teams are picking up with meetings on the GUCP problem.”
Detanking of ET-131, along with the requirement for the tank to “boil off” its residual propellants, has been completed. However, engineers are not due to return to the tank until next week - pending the completion of the troubleshooting plan that is likely to open with the recording of measurements prior to any demating of the Quick Disconnect and/or replacement of the GUCP seal.
“Continuing to support the GUCP investigation, both at MSFC (Marshall Space Flight Center) and MAF (Michoud Assembly Facility),” added the Lockheed Martin/ET on the latest Shuttle Standup/Integration report (L2).
“The STS-127 flight seal that was removed at the first leak is at MAF. Working with the folks on inspection and dimensional analysis.”
There are several candidates for root cause, such as unique thermal conditions associated with the hardware, notably the dynamics of the cryo temperatures that may be interacting with the hardware’s hinge brackets, resulting in a misalignment during tanking.
Also under evaluation are potential software issues, and even possible issues with the leak detectors that registered the leak during tanking - as much as the latter has been ruled out as a specific reason for the scrub due to the visible observation of venting from the tank.
Another investigation path will be the evaluation of the External Tank hardware itself, as opposed to the Ground Support Equipment (GSE) of the GUCP QD, which may be the reason for the specific leak issues observed with STS-119 and STS-127’s tanks.
Such theories will be investigated as part of the root cause evaluations - which will result in a get-well plan ahead of the next launch attempt. Notably, it is understood that the resulting resolution will be tested via a tanking test, not unlike the path taken with the ECO (Engine Cut Off) sensor/LH2 Feedthrough solution ahead of STS-122’s launch.
As to how long the investigation and resulting troubleshooting plan will take, managers are currently aiming to be ready to launch Endeavour once the Beta Angle Cutoff has ended - which is due around July 11.
“Asked to assess the July 11 beta cut-out, and if there is any flexibility in moving that back at day or two, and what the long poles are in doing that,” added JSC’s Mission Operations (L2).
However, Mission Management Team (MMT) chair and deputy shuttle manager LeRoy Cain emphasized the need to work the problem and find the solution before they can even consider setting a new launch date.
First he praised the superb efforts by engineering teams - which worked through all three shifts to replace the GUCP QD and Seal after the first scrub - to allow the team to be in a posture for the second launch attempt.
Ironically, STS-127 would not have launched even without the leak issue, due to a breach in weather conditions at T-0.
“After the scrub attempt on Friday, the teams worked really hard to get us in a posture to try to go launch again,” noted Mr Cain via the Standup report. “Even when we got there it was a challenge to be able to get to a tanking scenario, but again the teams worked really hard to be able to go do that.
“It was a go thing that we were able to tank. We’ve got a good test of our system, and we obviously have a significant issue to work that we don’t understand. So, we are assembling a team to go off and work the problem and we will figure it out. It will take us a little time to figure it out, probably. But we will figure it out, we will get it rectified, we will move on, and we’ll fly sometime in July.”
Despite some ridiculous claims made by one media outlet of late, the true nature of the shuttle program’s leadership and engineering teams was again in evidence when Mr. Cain continued by pressing home the point that there will be no pressure to launch until the engineering teams have full confidence in the resolution of the tank’s leak issues.
“Mr. Cain wants to make sure folks in the technical teams are more worried about working the problem and coming to resolution than they are worried about the schedule,” added minutes from the Standup meeting.
“We will fly when we are ready to go fly. It may or may not be July 11. July 11 is only a few weeks around the corner here. We are not going to pick a date like July 11th and work backwards from it, and try to cram all the work into that.
“We are going to put together the best plan we can to understand the problem and resolve it, and then we will go figure out the schedule, and then figure out when that means we go can fly. So that’s the approach that I’d like the team to be thinking about, and don’t worry about the schedule. We’ll fly when we are ready.
“So with that, again, really appreciate the effort by the team. And, keep your head up. This team is extremely blessed to have a lot of capability and a lot of talent. And, I think we are steeped in aptitude for solving these kinds of problems. I have a lot of confidence that we’ll be able to get there and go fly.”
I grassetti sono miei. Il "ridiculous claims made by one media outlet of late" si riferisce a questa (http://www.wesh.com/news/19786382/detail.html) "notizia".
SFN:
Minor defect in shuttle fuel tank might be causing leaks
http://spaceflightnow.com/news/images/ni0906/19gucpwork_400.jpg
A very slight "clocking" misalignment in the way a hydrogen vent port flange on the shuttle Endeavour's external tank was riveted into the structure is the leading candidate for what caused gaseous hydrogen leaks that derailed two launch attempts June 13 and 17, the shuttle program manager says.
http://www.spaceflightnow.com/shuttle/sts127/status.html
SFN:
Shuttle Endeavour poised for Saturday evening launch
http://www.spaceflightnow.com/news/images/ni0907/10rss_400.jpg
The shuttle Endeavour's countdown is ticking smoothly toward launch Saturday evening on a delayed space station assembly mission to attach an experiment platform to a Japanese lab module, to replace aging solar array batteries and to deliver spare parts and supplies.
http://www.spaceflightnow.com/shuttle/sts127/090710mmt/
RINVIO!
SFN:
Space shuttle Endeavour's launch postponed to Sunday
http://www.spaceflightnow.com/news/images/ni0907/10shuttleweather_400.jpg
Multiple lightning strikes around pad 39A that hit during thunderstorms Friday night have prompted NASA to postpone shuttle Endeavour launch until Sunday. The 24-hour delay will give engineers additional time to ensure the lightning did not harm ground equipment or systems aboard Endeavour.
http://www.spaceflightnow.com/shuttle/sts127/status.html
http://www.pctunerup.com/up/results/_200907/20090711193512_lightning.jpg
Flight, try SCE to Aux :O :D
TroopeR_x17
12-07-2009, 01:44
caspio la turbopoppaa che mi cede:D
danny2005
12-07-2009, 11:06
lancio previsto per le 23 e 13 di oggi o ho capito male?
frankytop
12-07-2009, 18:42
lancio previsto per le 23 e 13 di oggi o ho capito male?
A me risulta alle 01:13 ora italiana.
A me risulta alle 01:13 ora italiana.
*
Su forumastronautico c'è:
Confermiamo che il lancio, se tutto andrà per il meglio, avverrà alle ore 1.13 del mattino di lunedì 13 luglio.
Per il momento tutto sta procedendo senza intoppi.
A me risulta alle 01:13 ora italiana.
7:13 PM EDT (Eastern Daylight Saving Time) = 23:13 UTC = 01:13 UTC+2, ora nota come CEST (Central European Summer Time).
Quindi confermo. :D
frankytop
12-07-2009, 21:14
*
Su forumastronautico c'è:
Eh io come fonte primaria ho quel forum,al quale sono iscritto..:D
In attesa del lancio: video di un tecnico del pad che perde il cappellino (http://www.youtube.com/watch?v=YyudTBP0RzY) (lo so, non è particolarmente entusiasmante :D)
frankytop
12-07-2009, 22:59
In attesa del lancio: video di un tecnico del pad che perde il cappellino (http://www.youtube.com/watch?v=YyudTBP0RzY) (lo so, non è particolarmente entusiasmante :D)
Ah sarà licenziato in tronco,come minimo...:D
danny2005
12-07-2009, 23:15
7:13 PM EDT (Eastern Daylight Saving Time) = 23:13 UTC = 01:13 UTC+2, ora nota come CEST (Central European Summer Time).
Quindi confermo. :D
Ah ecco...con tutti sti fusi..........meglio così, pensavo di perdermelo invece sono qua ;)
2219 GMT (6:19 p.m. EDT)
T-minus 9 minutes and holding. Countdown clocks have gone into the planned 45-minute, 54-second built-in hold. Today's launch is targeted for 7:13:54 p.m. EDT, if the thunderstorms to the west clear out of the area in time.
2243 GMT (6:43 p.m. EDT)
Now 30 minutes away from the scheduled launch time. However, the stormy weather is now approaching the 10 mile circle around the launch pad.
There's actually two constraints in play. The 10-mile keepout zone for thunderstorms is based on the launch commit criteria. The broader 20-mile limit is part of the Return to Launch Site abort weather rules that ensure conditions would be acceptable if Endeavour had to make an emergency landing shortly after liftoff.
2301 GMT (7:01 p.m. EDT)
SCRUB! Thunderstorms west of the launch site will prevent space shuttle Endeavour from blasting off today during its brief launch window to rendezvous with the International Space Station.
NASA will try again Monday. The target liftoff time will be 6:51:24 p.m. EDT.
frankytop
13-07-2009, 00:07
E ti pareva....faccio prima io a lanciare un satellite con la fionda a 'sto punto...:D
Buona notte,beh tranne a Marko91 visto che si trova in Canada... :)
Buona notte,beh tranne a Marko91 visto che si trova in Canada... :)
Ma anche si dato che dal Canada è appena tornato... buona notte anche a lui! :D
A domani raga, notte! :)
danny2005
13-07-2009, 07:40
Televideo riporta che c'è stato un nuovo rinvio causa maltempo
Dovrebbe essere martedì a sto punto.....
Ma quanti rinvii ha subito sta missione? non era schedulata a giugno?
Codename47
13-07-2009, 11:33
Per adesso il lancio rimane fissato alle 00.51 di martedì 14, c'è stato un solo rinvio di 24 ore, però il meteo non è convincente, in tal caso vi sarebbe un'ulteriore finestra di lancio circa 24 ore dopo, se il meteo fa ancora le bizze si rimanda al 27 luglio ;)
SFN:
Launch attempt No. 5 underway for Endeavour
http://www.spaceflightnow.com/news/images/ni0907/12walkout_400.jpg
The space shuttle launch team, working by remote control from Firing Room 4 about three-and-a-half miles away, has reloaded Endeavour's external fuel tank with a half-million gallons of supercold propellants. Today's liftoff time is 6:51 p.m. EDT, but there's a 60 percent of bad weather.
http://www.spaceflightnow.com/shuttle/sts127/status.html
"40% chance of favorable weather at launch, 60% chance of no-go at time of launch."
4chr
Codename47
13-07-2009, 21:53
EDIT: ho sbagliato
2055 GMT (4:55 p.m. EDT)
For the moment, the launch weather rules are "go." The official forecast still predicts a 60 percent chance of conditions violating the rules at launch times.
The odds are 60 percent "no go" on Tuesday and 40 percent on Wednesday.
Codename47
13-07-2009, 22:16
2105 GMT (5:05 p.m. EDT)
The targeted liftoff time is 6:51:24 p.m. EDT. That's the moment when Earth's rotation carries the launch pad into the plane of the station's orbit.
The official window for extends from 6:46:24 p.m. to 6:56:25 p.m. EDT. Launching within that 10 minute period will enable Endeavour to dock with the International Space Station on Wednesday.
Codename47
13-07-2009, 22:35
2130 GMT (5:30 p.m. EDT)
The launch weather rule for lightning is now being violated due to a storm cell to the south. So weather is "no go" for launch at this time.
Mi sa che salta anche oggi, domani stesse identiche previsioni, quindi o mercoledi o 27 luglio :(
TroopeR_x17
13-07-2009, 22:49
ma porc
Codename47
13-07-2009, 23:06
2157 GMT (5:57 p.m. EDT)
T-minus 9 minutes and holding. Countdown clocks have gone into the planned 45-minute, 24-second built-in hold. Launch is targeted for 6:51:24 p.m. EDT, if the thunderstorms and lightning around the area clear in time. Today's available window to get the shuttle off the ground extends just five minutes to 6:56:25 p.m. EDT.
TroopeR_x17
13-07-2009, 23:12
2157 GMT (5:57 p.m. EDT)
T-minus 9 minutes and holding. Countdown clocks have gone into the planned 45-minute, 24-second built-in hold. Launch is targeted for 6:51:24 p.m. EDT, if the thunderstorms and lightning around the area clear in time. Today's available window to get the shuttle off the ground extends just five minutes to 6:56:25 p.m. EDT.
quindi orario nostro preciso?
Codename47
13-07-2009, 23:16
Secondo me c'è qualcuno che gufa :D
2209 GMT (6:09 p.m. EDT)
The storm cell to the south that was violating the lightning rule has moved out. However, there is another cell to the north that's being watched.
@trooper: orario nostro 00.51, tra poco più di mezz'ora ;)
Codename47
13-07-2009, 23:33
2230 GMT (6:30 p.m. EDT)
The stormy weather remains around the Kennedy Space Center is now violating the lightning, anvil and field mill rules.
Ho poche speranze...
2239 GMT (6:39 p.m. EDT)
SCRUB! For the second straight day, launch of space shuttle Endeavour has postponed due to summertime thunderstorms around the Kennedy Space Center.
Tuesday's target launch time to rendezvous with the International Space Station is 6:25:41 p.m. EDT. The time on Wednesday would be 6:03:10 p.m. EDT.
This is the fifth scrub for the mission after two gaseous hydrogen leaks in June and a delay Saturday to check shuttle systems for any harm caused by nearby lightning strikes.
Rimandato ancora. :(
Domani!
PS: Preciso che sono in Italia da qualche giorno.. la cosa assurda che quando ero in Canada e potevo guardarmi i lanci al pomeriggio non l'ho mai fatto :D
Buonanotte a tutti!
Codename47
13-07-2009, 23:44
Ricordo che il meteo per domani dà il 60% di probabilità di condizioni negative, il 40% invece per dopodomani! Certo che dev'essere frustrante per l'equipaggio prepararsi tutti i giorni :D notte a tutti!
Ufficiale: si ritenta mercoledì (non domani), alle 6:03 pm, 00:03 ora italiana di giovedì 16.
The Hydralisk
13-07-2009, 23:52
sono stato in florida un numero sufficiente di volte per capire una cosa molto semplice: in questo periodo dell'anno, uragani a parte, il giorno è fantastico.. neanche una nuvola. La sera si alza un po' di vento, porta 4 nuvole e viene giù il diluvio. Il fatto è che loro lo sanno benissimo ma la finestra di lancio per intercettare la ISS è questa. Credo che anche mercoledi sarà scrub.. l'orario ideale sarebbe partire per le 17.00 ora locale ma la ISS deve collaborare con un orbita adeguata :D
Beh almeno la probabilità di NO-GO per mercoledì scende al 40%... che dire... speriamo! :sperem:
Notte!
:ronf:
SFN:
http://www.spaceflightnow.com/news/images/ni0906/30endeavour_400.jpg
Will the 6th try be the charm for launching Endeavour?
Endeavour has been reloaded with a half-million gallons of rocket fuel at Kennedy Space Center's pad 39A for the sixth attempt to launch this International Space Station construction mission. Liftoff of the space shuttle is targeted for 6:03 p.m. EDT today, weather permitting.
http://www.spaceflightnow.com/shuttle/sts127/status.html
Codename47
15-07-2009, 19:53
Piccola curiosità: ci sono state altre missioni con 6 o più tentativi? :D
Piccola curiosità: ci sono state altre missioni con 6 o più tentativi? :D
STS-61C ed STS-73, entrambe con 6 tentativi.
2016 GMT (4:16 p.m. EDT)
The field mill, lightning and cumulus cloud rules are no longer being violated. But the anvil cloud rule remains red.
2003 GMT (4:03 p.m. EDT)
2035 GMT (4:35 p.m. EDT)
The anvil cloud rule is no longer being violated. So all launch commit criteria weather rules are "go" at this time.
TroopeR_x17
15-07-2009, 21:57
ora precisa per il lancio?
ora precisa per il lancio?
00:03:10
2109 GMT (5:09 p.m. EDT)
T-minus 9 minutes and holding. Countdown clocks have gone into the planned 45-minute, 24-second built-in hold. Launch is targeted for 6:03:10 p.m. EDT. Today's available window to get the shuttle off the ground extends just five minutes to 6:08:10 p.m. EDT.
Current weather conditions are "go" right now. Fingers are crossed!
Una vespa gigante sta attaccando (http://forum.nasaspaceflight.com/index.php?topic=17825.msg437595#msg437595) lo Shuttle :O
2131 GMT (5:31 p.m. EDT)
All green across the weather rule board. Conditions are within limits for a launch today.
2140 GMT (5:40 p.m. EDT)
Launch weather officer Kathy Winters says there's now less than a 10 percent chance of conditions preventing today's liftoff.
2154:10 GMT (5:54:10 p.m. EDT)
T-minus 9 minutes and counting! The Ground Launch Sequencer has been initiated. The computer program is located in a console in the Firing Room of the Complex 39 Launch Control Center. The GLS is the master of events through liftoff. During the last 9 minutes of the countdown, the computer will monitor as many as a thousand different systems and measurements to ensure that they do not fall out of any pre-determine red-line limits. At T-minus 31 seconds, the GLS will hand off to the onboard computers of Endeavour to complete their own automatic sequence of events through the final half minute of the countdown.
carcaroff
15-07-2009, 22:57
Il mio sogno. Se vincessi al superenalotto come prima cosa prenoterei un viaggetto in orbita.
2205 GMT (6:05 p.m. EDT)
T+plus 2 minutes, 10 seconds. Mission Control confirms a good jettison of the solid rocket boosters has occurred. The spent boosters will parachute into the Atlantic Ocean for retrieval. Endeavour continues its streak toward space on the power generated by the three liquid-fueled main engines.
carcaroff
15-07-2009, 23:09
:stordita:
TroopeR_x17
15-07-2009, 23:09
che mostruosità!
2211 GMT (6:11 p.m. EDT)
T+plus 8 minutes, 31 seconds. MECO. Main Engine Cutoff confirmed! Endeavour has arrived in orbit for its construction flight to build a front porch on the International Space Station where external science research can be performed.
2212 GMT (6:12 p.m. EDT)
T+plus 9 minutes, 30 seconds. The video camera mounted to Endeavour's external tank showed debris falling away during launch and some tiles appear to be slightly damaged.
Arghhhhh l'ho mancatoooo :cry:
Tutto bene :) Unica (piccola) irregolarità la richiesta di accendere un riscaldatore...
Grazie a GioFX per il coverage del lancio.
Ci sono stati evidenti distacchi multipli di pezzi di schiuma attorno a T+1:46. Verranno ovviamente osservati nel dettaglio attraverso i video ad alta risoluzione e alle registrazioni dei sensori, ma probabilmente - considerato anche il momento in cui si sono verificati i possibili impatti con l'orbiter - non dovrebbero causare particolari preoccupazioni per il rientro.
Naturalmente tutto verrà confermato o meno dall'analisi approfondita con l'OBSS durante i FD1 e 15, prima del rientro.
Naturalmente tutto verrà confermato o meno dall'analisi approfondita con l'OBSS durante i FD1 e 15, prima del rientro.
*
Aggiungo che nella molto improbabile eventualità che si renda necessario hanno i mezzi per compiere riparazioni sul TPS.
SFN:
Endeavour rockets into space on sixth launch try
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: July 15, 2009
Running a month late because of hydrogen leaks and stormy weather, the shuttle Endeavour finally roared to life and blasted off Wednesday on its sixth try, rocketing away through a hazy sky toward a Friday rendezvous with the International Space Station. Multiple pieces of foam insulation appeared to fall from the ship's external tank during the early moments of flight, but it was not immediately clear whether the shuttle's fragile heat shield suffered any significant damage.
http://spaceflightnow.com/shuttle/sts127/090715launch/15debrisbig_400.jpg
http://spaceflightnow.com/shuttle/sts127/090715launch/
Ma non ho ancora capito,
ma non c'è un modo per evitare questi distacchi?
Togliere la schiuma e sostituirla con altro...Creare un tipo di schiuma diversa, o altre cose adatte all uopo...? :)
Ogni lancio che va bene è miracolato con queste condizioni
SFN:
Endeavour rockets into space on sixth launch try
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: July 15, 2009
Running a month late because of hydrogen leaks and stormy weather, the shuttle Endeavour finally roared to life and blasted off Wednesday on its sixth try, rocketing away through a hazy sky toward a Friday rendezvous with the International Space Station. Multiple pieces of foam insulation appeared to fall from the ship's external tank during the early moments of flight, but it was not immediately clear whether the shuttle's fragile heat shield suffered any significant damage.
http://spaceflightnow.com/shuttle/sts127/090715launch/15debrisbig_400.jpg
http://spaceflightnow.com/shuttle/sts127/090715launch/
Chissa' che emozione si prova ad essere sopra ad un "motore" da 50.000 cavalli e vedere detriti staccarsi random dal tuo veicolo :asd:
Quando e' il prossimo lancio? Non voglio perdermi la diretta!
Edit: ho controllato wikipedia.. Il 15 Agosto.
E il 16 Settembre 2010 ci sara' l'ultimo volo!
Ma non ho ancora capito,
ma non c'è un modo per evitare questi distacchi?
Togliere la schiuma e sostituirla con altro...Creare un tipo di schiuma diversa, o altre cose adatte all uopo...? :)
In pratica no:
- L'ET arriva praticamente fino in orbita quindi un suo aumento di peso si ripercuote praticamente 1:1 su una diminuzione del carico utile. Questo implica che un eventuale soluzione deve essere leggera.
- I distacchi di schiuma/ghiaccio dai serbatoi sono una cosa normale nei razzi con combustibili criogenici. Il problema è il TPS fragile che ci sta "sotto"..
- Tutte le soluzioni analizzate avevano delle conseguenze in termini di massa/entità dello sviluppo inaccettabili.
Ogni lancio che va bene è miracolato con queste condizioni
Premessi i punti sopra:
- I distacchi di schiuma/ghiaccio dall'ET sono stati diminuiti moltissimo grazie alle molte modifiche effettuate.
- Il Columbia è stato colpito da un pezzo di schiuma della dimensione di una valigetta sul bordo delle ali (il punto peggiore), ma escludenti questi casi estremi il TPS dello Shuttle è in grado di resistere a danni estesi e riportare a terra lo Shuttle. Durante STS-27 un pezzo della copertura superiore degli SRB si è staccato e ha colpito l'orbiter. Atlantis è stato in grado di rientrare con più di 700 mattonelle danneggiate:
http://galaxywire.net/wp-content/uploads/2009/06/sts-27_side-2.jpg
http://upload.wikimedia.org/wikipedia/commons/7/77/STS-27-tiledamage.jpg
- Ora si è molto più attenti ad ogni impatto e ci sono le procedure per controllare eventuali danni e a seconda dei casi ignorarli se non sono un rischio, ripararli o chiamare un LON nel caso siano catastrofici.
Ragazzi, tutto si può fare... basta sganciare i soldi, e tanti tanti ma tanti tanti tanti e ancora tanti tanti tanti di più di quanto già tanto ma tanto ma tanto e ritanto costi oggi.
Detto in modo semplicistico.
E quindi l'unica soluzione è valutare il coefficiente di rischio di un evento potenzialmente catastrofico, ridurre al massimo i possibili eventi di questo tipo e adottare azioni di "contigenza" da mettere in atto qual'ora si verificasse.
Tutte cosa già fatte.
Mr Shannon:
Three foot section of flame trench missing at the pad. Nothing serious.
SRB ships to two boosters on Saturday. Assessment on Monday.
Propulsion systems performed down the middle.
A lot of talk about the foam.
Now on to the intertank. Explains the intertank.
Surprised by the foam loss due to the structure (strong) and lack of cryo temps. Don't expect to see large losses, but do expect popcorning.
What we saw here were strips that peeled off the primer - you can see the metal underneath.
.5 inches think. No idea why it came off. Looks like the base primer wasn't holding it on. Notes shock interaction between the orbiter and the boosters with the intertank.
Some came off when there wasn't any aerodynamic stresses. Foam loss from where the camera is located. That's why the foam looked large, because it was right next to the camera, and thus looked more dramatic.
Foam is robotically sprayed. It's a thin layer of foam (which is why it broke up).
This foam came off late in the flight.
Survey's to be evaluated tomorrow. FD3 RPM to come. Right in the middle of the TPS assessment. No one on the MMT saw any reason to think they couldn't bring the vehicle back if required.
Looks like some topcoat was lost on the tiles on the chine area, but seems less than 125's event.
4chr
Ah.. la notizia (Fox News: NASA grounds shuttle fleet due to foam loss) che la NASA mette a terra gli Shuttle a causa della perdita di schiuma è falsa.
Shannon ha solo detto che controlleranno gli altri ET (quelli in fabbricazione e quello già pronto) per appurare se ci sono eventuali anomalie che hanno provocato il particolare distacco. Questa però è pratica comune: se c'è un problema analizzano il materiale/dati disponibili per determinarne la causa ed eventualmente correggerla. Nessuna misura straordinaria in questo caso insomma...
It's complete nonsense. Already told one person off for believing this crap. They've completely blown the "we'll check the other tanks" comment from Mr Shannon out of proportion and they will obviously check the next tank before launching. That is not a grounding, that is normal due process.
Codename47
17-07-2009, 15:41
Ricordo che tra poco (18.54 ora italiana) inizierà la Rendezvous Pitch Maneuver, sempre spettacolare da vedere :) Il docking è previsto per le 19.55 ;)
SFN:
Shuttle Endeavour docks with the space station
http://www.spaceflightnow.com/news/images/ni0907/17fd3dock_400.jpg
Endeavour has arrived at the International Space Station for its construction mission that will install an external science deck to complete Japan's Kibo facilities, pre-stage critical spare parts for the outpost and replace aging batteries in the power grid. Docking occurred a few minutes early at 1:47 p.m. EDT.
http://www.spaceflightnow.com/shuttle/sts127/status.html
SFN:
Shuttle Endeavour's heat shield appears to be fine
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: July 17, 2009
While the analysis is not yet complete, a quick look at photographs shot during the shuttle Endeavour's dramatic pitch-around maneuver during final approach to the space station today show the orbiter's heat shield appears to be in good condition with no obvious signs of damage beyond two areas of coating loss spotted during launch Wednesday.
http://www.spaceflightnow.com/shuttle/sts127/090717fd3/index3.html
SFN:
http://www.spaceflightnow.com/news/images/ni0906/11jefhandoff_400240.jpg
Astronauts install station's new external science deck
The Japanese Exposed Facility was attached to the Kibo laboratory module Saturday, giving the International Space Station a new outdoor platform to perform science research. Final installation of the deck came after the day's 5.5-hour spacewalk by astronauts Dave Wolf and Tim Kopra.
http://www.spaceflightnow.com/shuttle/sts127/status.html
----
E, nel frattempo... "luce verde" provvisoria per la condizione generale del TPS:
Shuttle heat shield inspection finds no major issues
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: July 18, 2009
NASA's Debris Analysis Team is in the final stages of reviewing launch and on-orbit photography of the shuttle Endeavour's heat shield. The ship's nose cap and wing leading edge panels have been cleared for entry as is and while 16 areas have been identified with minor tile damage, engineers have not seen anything that warrants repairs or additional inspections, a senior manager said Saturday.
http://www.spaceflightnow.com/shuttle/sts127/090718fd4/tiledamage.jpg
http://www.spaceflightnow.com/shuttle/sts127/090718fd4/index4.html
Nell'execute package (http://www.nasa.gov/pdf/371214main_fd06_ex_pkg.pdf) di oggi ci sono le istruzione per effettuare una serie di reboost dell'orbita della ISS col risultato di immetterla su una traiettoria di rientro libero verso la luna :eek:
(un po' di humor per festeggiare il quarantennale dell'allunaggio di Apollo 11 :D)
Executing this procedure will result in a trans-lunar trajectory.
May cause loads exceedences.
Propellant may not be available for return to earth.
Crew is advised to pack a change of clothes.
Rientro libero aka schiantarsi?! Oppure stare in orbita attorno alla luna?!
Rientro libero aka schiantarsi?! Oppure stare in orbita attorno alla luna?!
E' una traiettoria che fa tornare indietro l'oggetto verso la terra anche senza l'intervento di propulsori. In sostanza orbita terrestre -> TLI -> una "curva" attorno alla luna -> rientro nell'atmosfera terrestre.
E' quella usata durante la missione Apollo 13* :D
A free return trajectory is one of a very small sub-class of trajectories in which the trajectory of a satellite traveling away from a primary body (for example, the Earth) is modified by the presence of a secondary body (for example, the Moon) causing the satellite to return to the primary body.
* quella che si vede a 3 secondi in questo (http://www.youtube.com/watch?v=oTGiLVj9r2g&feature=related) video
Raga, io sarò via da domani fino a domenica... Rand, ci pensi tu ad updatare con le notizie più importanti? Grazie mille!
Oggi EVA-3 che prevede la sostituzione di 4 batterie nel truss P6 e la preparazione per la JAXA del ICS-EF (http://kibo.jaxa.jp/en/about/kibo/ics/#ics_ef) (ICS-PM è già installato):
http://kibo.jaxa.jp/images/about/kibo/06/ics_pm_ef.jpg
ICS Pressurized Module (ICS-PM) (left) and ICS Exposed Facility (ICS-EF) (right)
In questa immagine si può vedere la collocazione:
http://kibo.jaxa.jp/en/about/images/ics_en.jpg
The ICS Exposed Facility (ICS-EF) is comprised of several components, including an anntenna, pointing mechanism, frequency converters, high-power amplifier, and various sensors including the Earth sensor, Sun sensor, and inertial reference unit. The ICS antenna can automatically track the DRTS.
FD8 : EVA3 (JAXA Payload Prep, P6 Battery R&R (4))
– EVA3: Wolf and Cassidy
• JAXA ICS-EF Payload Prep (MLI)
• P6 Battery R&R; planned completion of 4 batteries
• SSRMS GCA required to place each battery in EV workspace
– SSRMS moves ICC-VLD to park position that allows SARJ rotation
EVA 3 terminata in anticipo a causa di preoccupazioni dovute all'aumento della CO2 all'interno della tuta:
EVA-3 Overview:
For EVA-3, Wolf and Cassidy were tasked with the battery Removal and Replacement (R&R) of four of the six batteries on the P6 truss. Due to the early termination, only two were installed.
The LiOH canister is used to control carbon dioxide levels inside the EMUs. The other option, as seen with EVA-2, utilizes the METOX method.
“BREAK, BREAK. Hold what you’re doing,” came over the loop during the EVA as the spacewalkers were talking , as controllers started to notice spikes in Cassidy’s CO2 levels. It is not confirmed – but likely – that the spikes are related to a failing LiOH canister.
However, the rising levels are not a health concern, allowing the EVA to move to some clean up tasks, ahead of transitioning back to the Quest Airlock to end the EVA early. UPDATE: Both Spacewalkers are now safely back into Quest.
Per oggi solo attività interne. Da segnalare il primo uso del braccio robotico giapponese:
FD9 : JAXA Payload Transfer
– Transfer of MAXI (http://kibo.jaxa.jp/en/experiment/ef/maxi/), ICS-EF (http://kibo.jaxa.jp/en/about/kibo/ics/), and SEDA-AP (http://kibo.jaxa.jp/en/experiment/ef/seda-ap/) using the JEMRMS
– EVA4 Campout (Cassidy and Marshburn)
I 2 esperimenti di cui si parla nella citazione qui sopra sono:
- Monitor of All-sky X-ray Image (MAXI)
http://kibo.jaxa.jp/images/experiment/pict/maxi/he-maxi0001.jpg
All-sky X-ray scanner, consists of X-ray slit cameras with high sensitivity. Continuously monitors astronomical X-ray objects over a broad energy band (0.5 to 30 keV).
MAXI monitors the X-ray variability once every 96 minutes for more than 1,000 X-ray sources covering the entire sky on time scales from a day to a few months.
As an all-sky monitor, MAXI employs slit cameras. They determine one direction of X-ray sources within the narrow field of view of the slit that is orthogonally oriented to a one-dimensional position-sensitive X-ray detector. As an X-ray source moves according to the motion of the International Space Station, another position of the X-ray source is determined when the sources are captured by the collimated field of view of the camera.
The International Space Station orbits around the Earth every 96 minutes. During this time, Maxi’s two semicircular (arc-shaped) fields of view will scan the whole sky once.
- Space Environment Data Acquisition equipment-Attached Payload (SEDA/AP)
http://kibo.jaxa.jp/images/experiment/pict/seda/sedaap_e01.jpg
SEDA-AP will measure space environment (neutrons, plasma, heavy ions, high-energy light particles, atomic oxygen, and cosmic dust) in ISS orbit and environmental effects on materials and electronic devices to investigate the interaction with and from the space environment at the Kibo exposed facility.
At the same time, it is also expected to conduct on-orbit verification of APBUS (Attached Payload BUS) technology, which furnishes necessary functions when mounted on the Kibo exposed facility.
In future space activities, it is very important that space environmental data about space radiation degradation of space parts & materials and space craft anomalies are acquired for space craft design and manned space activity.
Various space environmental data acquired by SEDA-AP will be utilized as fundamental data for space equipment design. In addition, it is also expected to be used for related scientific research, ISS operation, and space weather forecasting.
Questa è la collocazione prevista:
http://kibo.jaxa.jp/en/experiment/ef/images/efpayloads.jpg
Oggi EVA-4, che ha come obbiettivo principale completare la sostituzione delle batterie del truss P6:
FD10 : EVA4 (P6 Battery R&R (4))
– EVA4: Cassidy and Marshburn
• P6 Battery R&R; planned completion of 4 batteries
• SSRMS GCA required to place each battery in EV workspace
• Installation of JEF Vision Equipment (VE) Aft Camera - Moved to EVA-5
– SSRMS Handoff ICC-VLD to SRMS after battery R&R complete
– SRMS berth ICC-VLD in PLB
Sono via fino a domenica. Quindi da parte mia niente aggiornamenti nei prossimi due giorni :D
Oggi EVA-4, che ha come obbiettivo principale completare la sostituzione delle batterie del truss P6:
Sono via fino a domenica. Quindi da parte mia niente aggiornamenti nei prossimi due giorni :D
Butto brevemente qualche aggiornamento sulla missione:
Spacewalkers give station's power grid fresh batteries
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: July 24, 2009
http://www.spaceflightnow.com/shuttle/sts127/090724fd10/eva4pre.jpg
Credit: NASA
Astronauts Christopher Cassidy and Thomas Marshburn successfully installed four new batteries in the International Space Station's oldest set of solar arrays today, completing a high-priority job that was interrupted Wednesday by elevated carbon dioxide levels in Cassidy's spacesuit.
Cassidy and David Wolf intended to install four of six batteries Wednesday, but only two were in place when the spacewalk was brought to an early end. Today, Cassidy and Marshburn installed the final four. The six old batteries were bolted to a cargo carrier that will be returned to Earth in the shuttle Endeavour's cargo bay.
L'articolo completo:
http://www.spaceflightnow.com/shuttle/sts127/090724fd10/index2.html
Update:
Completata la missione di ieri
STS-127 Crew Completes Fourth Spacewalk
24 luglio 2009 23:10
Spacewalkers Chris Cassidy and Tom Marshburn completed a seven hour, 12 minute spacewalk at 5:06 p.m. EDT, installing all four of the new batteries on the Port 6 truss.
The six new installed batteries function as expected and the old batteries are stored on a cargo carrier that will be placed in Endeavour’s payload bay later today.
This was the fourth of five STS-127 spacewalks, the 129th in support of International Space Station assembly and maintenance, totaling 805 hours, 42 minutes. It was the 101st spacewalk out of space station airlocks and the 217th American spacewalk in history. It was the second for both Cassidy and Marshburn.
NASA Television airs a Mission Status briefing at 7 p.m. with STS-127 Lead Flight Director Holly Ridings and STS-127 Lead Spacewalk Officer Kieth Johnson.
Astronauts Begin New Day Aboard Station
Sat, 25 Jul 2009 11:59:10 AM GMT+0200
Space shuttle Endeavour’s crew was awakened at 5:46 a.m. EDT with the song “In Your Eyes” by Peter Gabriel, played for Tom Marshburn.
The space station crew woke up at 4:33 a.m., but Endeavour’s crew was allowed to sleep in a little late. Today is an off-duty day for all 13 aboard the International Space Station and space shuttle. Before taking time off, Endeavour Commander Mark Polansky, Pilot Doug Hurley and Mission Specialists Chris Cassidy, Julie Payette, Tom Marshburn and Dave Wolf will answer media questions from WISH-TV in Indianapolis, Ind., CBS News and WREG-TV in Memphis, Tenn.
Oggi si riposano :D
La canzone-sveglia trasmessa é questa:
http://www.youtube.com/watch?v=EWvbu5K7MBM
Missioni esterne per i prossimi giorni:
On flight day 8: Wolf and Cassidy will prepare the exposed facility for experiment transfers and replace four
out of the six batteries on the port side truss where they are housed to provide power for the truss.
• On flight day 10: Cassidy and Marshburn will replace the final two batteries on the port truss. Also, they will
install a second camera that will provide video of experiments on the aft end of the exposed facility.
• On flight day 13: Cassidy and Marshburn will remove covers from the Dextre robotic arm, reconfigure ca-
bles on a panel for some circuit breakers and deploy two additional payload attachment systems. Finally,
they will replace an aging camera system on the starboard truss.
Oggi EVA-5 che prevede:
EVA-5 will contain five main tasks:
Z1 patch panel for the CMGs.
Dextre MLI not seated quiet right, so will check it's correctly in place. Commissioning later this fall for the robot.
Chris and Tom will then go to the JEF porch to install the vision equipement, which was defered from earlier EVAs.
Deploy PAS - located on S3. Four are on S3, none are deployed. Upper and Outboard PAS deploy will be the first PAS to be deployed. Will be loaded with ELC critical spares.
EVA-5:
As is the case with the ever-changing nature of manned space exploration, changes to planned mission timelines are a routine occurrence.
Given the highly complex nature of the STS-127 assembly mission to the International Space Station (ISS), EVA-5 was planned into the mission timeline to be a catch up day for any mission EVA (Spacewalk) objectives that, for whatever reason, could not be accomplished in their originally planned slots.
This concept has proved to be invaluable for astronauts Chris Cassidy and Tom Marshburn, who will undertake the mission’s fifth and final spacewalk today.
Working on a revised EVA schedule, Marshburn and Cassidy will be tasked with installing a patch on a panel on the Z1 truss (Cassidy) and removing covers from Canada’s Special Purpose Dexterous Manipulator (Marshburn).
They will also be installing forward and aft cameras (or Vision Equipment as they are called) on the Japanese Exposed Facility (both Cassidy and Marshburn), and configuring the S3 Zenith Outboard PAS location into its deployed configuration (both Cassidy and Marshburn).
The contents of EVA-5 had to be replanned primarily because of delays encountered during EVA-3 and the P6 truss battery R&R (removal and replacement) activities.
EVA-3 was supposed to see the R&R of four P6 batteries with EVA-4 seeing the completion of the battery R&R (two batteries) and other scheduled tasks.
However, after just two batteries had been installed on EVA-3, the spacewalk was terminated due to rising CO2 (Carbon Dioxide) levels in Chris Cassidy’s spacesuit.
Therefore, EVA-4 was devoted to the completion of the battery R&R with other previously planned tasks for EVA-4 slipping into EVA-5.
To accommodate these objective into EVA-5, several get-head tasks originally planned for the spacewalk were deferred until a later time. EVA-5, at this time, is scheduled to last about six and half hours.
jumpjack
27-07-2009, 14:43
Ieri ho osservato un fantastico passaggio della ISS, al tramonto, con magnitudine -3, durato diversi minuti! :eek:
Mi chiedevo se in teoria sarebbe possibile osservare lo shuttle mentre si stacca dalla ISS, cioe' se si vedrebbero i due puntini allontanarsi nel breve tempo di visibilità da terra.
Quando rientra questa missione?
Codename47
28-07-2009, 15:42
Ieri ho osservato un fantastico passaggio della ISS, al tramonto, con magnitudine -3, durato diversi minuti! :eek:
Mi chiedevo se in teoria sarebbe possibile osservare lo shuttle mentre si stacca dalla ISS, cioe' se si vedrebbero i due puntini allontanarsi nel breve tempo di visibilità da terra.
Quando rientra questa missione?
Vista anch'io per 3 giorni a magnitudine -3.4, molto molto bello! :) Non credo si riesca a vedere l'undocking ad occhio nudo... e comunque direi che non ci stiamo con gli orari, visto che è previsto per oggi alle 19.26 ora italiana :( Atterraggio invece (non ancora definitivo, bisogna vedere le varie finestre) alle 16.47 di venerdi ;)
http://www.wired.com/images_blogs/wiredscience/2009/07/iss-endeavor.jpg
http://www.wired.com/images_blogs/wiredscience/2009/07/ooiss_endeavour_2009july26_.jpg
frankytop
28-07-2009, 18:28
Mi chiedevo se in teoria sarebbe possibile osservare lo shuttle mentre si stacca dalla ISS, cioe' se si vedrebbero i due puntini allontanarsi nel breve tempo di visibilità da terra.
Si una volta mi è capitato di vederli in fase di docking,si vedene bene distintamente anche lo shuttle.
jumpjack
28-07-2009, 19:13
Ehi, mi sa che siamo fortunati!
ISS:
Date Mag Starts Max. altitude Ends
Time Alt. Az. Time Alt. Az. Time Alt. Az.
29 Jul -0.2 21:00:28 10 WSW 21:01:00 10 SW 21:01:32 10 SW
Shuttle STS-127
Date Mag Starts Max. altitude Ends
Time Alt. Az. Time Alt. Az. Time Alt. Az.
29 Jul 1.8 21:00:26 10 WSW 21:00:58 10 SW 21:01:29 10 SW
Vista l'eccezionalità dell'occasione, forse ci starebbe beneun thread a parte... o no? Tornerebbe utile anche per le prossime occasioni.
Chissa' se invece dall'italia ci sarà mai una congiunzione che permetta di fare quelle spettacolari foto! Ma è sempre lo stesso tizio? (ne conosco altre 2 di foto cosi').
Ma secondo voi con un binocolo 12x50 riesco a vedere la forma?
Ho anche un telescopo da 110mm.... ma nn riusciro' mai a muoverlo cosi' in fretta!!
SFN:
Shuttle undocks and takes victory lap around station
http://www.spaceflightnow.com/news/images/ni0907/28flyaround_400.jpg
The shuttle Endeavour completed its 11-day visit to the International Space Station today, undocking at 1:26 p.m. EDT after an action-packed construction mission featuring five spacewalks and intricate operations with three robotic arms.
http://www.spaceflightnow.com/shuttle/sts127/090728fd14/index3.html
frankytop
29-07-2009, 00:04
E se tutto va bene alle ore 16:45 (ora italiana) del 31/07 atterra.
jumpjack
29-07-2009, 15:23
Ehi, mi sa che siamo fortunati!
ISS:
Date Mag Starts Max. altitude Ends
Time Alt. Az. Time Alt. Az. Time Alt. Az.
29 Jul -0.2 21:00:28 10 WSW 21:01:00 10 SW 21:01:32 10 SW
Shuttle STS-127
Date Mag Starts Max. altitude Ends
Time Alt. Az. Time Alt. Az. Time Alt. Az.
29 Jul 1.8 21:00:26 10 WSW 21:00:58 10 SW 21:01:29 10 SW
Vista l'eccezionalità dell'occasione, forse ci starebbe beneun thread a parte... o no? Tornerebbe utile anche per le prossime occasioni.
Chissa' se invece dall'italia ci sarà mai una congiunzione che permetta di fare quelle spettacolari foto! Ma è sempre lo stesso tizio? (ne conosco altre 2 di foto cosi').
Ma secondo voi con un binocolo 12x50 riesco a vedere la forma?
Ho anche un telescopo da 110mm.... ma nn riusciro' mai a muoverlo cosi' in fretta!!
secondo alcuni, coi pannelli solari completi si dovrebbe vedere la ISS pure di giorno.
Ho mancato l'appuntamento delle 14:36 :muro: , quando era a 36 gradi sull'orizzonte.
A quello delle 16:13 non sono riuscito a beccarla, 11 gradi sono proprio in mezzo alla foschia.... :rolleyes: Peccato, perche' si dovrebbero vedere due puntini, la ISS e lo Shuttle (ma lo shuttle solo di sera...).
Stasera ci riprovo.
Oggi è stato svolto l'esperimento SEITE (http://www.nasa.gov/mission_pages/station/science/experiments/SEITE.html) (Shuttle Exhaust Ion Turbulence Experiments):
Shuttle Exhaust Ion Turbulence Experiments (SEITE) uses instrumentation on several satellites for in situ observations of density and electric field disturbances caused by the Space Shuttle Orbital Maneuvering System (OMS) engine exhaust plume. SEITE satellite instrumentation will observe and measure the plasma turbulence (disruption in ionized gas particles) produced by the OMS exhaust plume (column of gas resulting from the use of propellants and measure electric fields, plasma waves (periodic motion in ionized gas particles), plasma densities (density of electrons), and magnetic fields (an area surrounding a magnetic body or electrical current).
The Communications/Navigation Outage Forecasting System (C/NOFS) satellite, FalconSat-3, and the Enhanced Polar Outflow Probe/CASCADE Demonstrator Small-sat and Ionospheric Polar Explorer (ePOP/CASSIOPE) satellites have the correct instrumentation for the measurements. The satellite sensors for the measurements provide data on the following: Neutral Flows, Electron and Ion Distributions, Electric Fields and Plasma Waves, Radio Scintillations. The satellite needs to be within 300 km of the ignition point for the measurements. On average there is an opportunity for an observation once every 5 days for each satellite while the Shuttle is in orbit.
Immagini di STS-127 (http://www.universetoday.com/2009/07/28/sts-127-a-mission-in-pictures/)
http://www.universetoday.com/wp-content/uploads/2009/07/ISS-lunch-580x396.jpg
Pranzo sulla ISS
http://www.universetoday.com/wp-content/uploads/2009/07/ISS-moon-rock-580x385.jpg
Una roccia lunare
http://www.universetoday.com/wp-content/uploads/2009/07/Tim-Kopra-580x396.jpg
http://www.universetoday.com/wp-content/uploads/2009/07/Tom-Mashburn-eva-580x396.jpg
jumpjack
30-07-2009, 07:50
secondo alcuni, coi pannelli solari completi si dovrebbe vedere la ISS pure di giorno.
Ho mancato l'appuntamento delle 14:36 :muro: , quando era a 36 gradi sull'orizzonte.
A quello delle 16:13 non sono riuscito a beccarla, 11 gradi sono proprio in mezzo alla foschia.... :rolleyes: Peccato, perche' si dovrebbero vedere due puntini, la ISS e lo Shuttle (ma lo shuttle solo di sera...).
Stasera ci riprovo.
che fregatura, non ho visto ne' shuttle nè iss.
Atterra domani lo shuttle?
che fregatura, non ho visto ne' shuttle nè iss.
Atterra domani lo shuttle?
Si, salvo problemi causa meteo. Cmq o domani o sabato. Sabato è in ogni caso l'ultimo "giorno utile" per cui atterreranno ovunque possibile.
Il primo tentativo è previsto nell'orbita n. 248 con atterraggio al KSC, e con i seguenti orari:
- De-orbit burn: 09:42 EDT (15:42 CEST)
- Atterraggio: 10:48 EDT (16:48 CEST)
Io non potrò seguirlo in diretta... chiedo a chi ha modo di postare qualche update durante l'atterraggio.
Grazie!
:)
Rientro ed atterraggio:
Primo Tentativo: Venerdì 31 Luglio, ore 16:48 CEST
Primo tentativo - Orbita n. 248
http://www.spaceflightnow.com/shuttle/sts127/090730fd16/ksctrack2.jpg
Rev. 248 Deorbit to KSC
Deorbit burn: 09:42:02 AM
Change in velocity (dV): 218 mph
Burn duration (dT): 03:04
Crossrange: 760 sm
Range from EI to KSC: 5,033 sm
Turn: 215-degree left turn to runway 15
05:42 AM......Begin deorbit timeline
05:57 AM......Radiator stow
06:07 AM......Mission specialists seat installation
06:13 AM......Computers set for deorbit prep
06:17 AM......Hydraulic system configuration
06:42 AM......Flash evaporator checkout
06:48 AM......Final payload deactivation
07:02 AM......Payload bay doors closed
07:12 AM......Mission control 'go' for OPS-3
07:22 AM......OPS-3 transition
07:47 AM......Entry switchlist verification
07:57 AM......Deorbit PAD update
08:02 AM......Crew entry review
08:17 AM......CDR/PLT don entry suits
08:34 AM......IMU alignment
08:42 AM......CDR/PLT strap in; MS suit don
08:59 AM......Shuttle steering check
09:02 AM......Hydraulic system prestart
09:09 AM......Toilet deactivation
09:22 AM......MCC 'go' for deorbit burn
09:28 AM......MS seat ingress
09:37 AM......Single APU start
09:42:02 AM...Deorbit ignition
09:45:06 AM...Deorbit burn complete
10:16:35 AM...Entry interface
10:21:42 AM...1st roll command to left
10:35:20 AM...C-band radar acquisition
10:36:06 AM...1st left-to-right roll reversal
10:41:59 AM...Velocity less than mach 2.5
10:44:09 AM...Velocity less than mach 1
10:45:08 AM...215-degree left turn to runway 15
10:48:20 AM...Landing
Secondo tentativo - Orbita n. 249
http://www.spaceflightnow.com/shuttle/sts127/090730fd16/ksctrack2.jpg
Rev. 249 Deorbit to KSC
Deorbit ignition: 11:16:55 AM
Change in velocity (dV): 218 mph
Burn duration (dT): 3:04
Crossrange: 292 sm
Range from EI to KSC: 5,086 sm
259 Left turn to runway 15
10:56 AM......MCC 'go' for deorbit burn
11:02 AM......MS seat ingress
11:11 AM......Single APU start
11:16:55 AM...Deorbit ignition
11:19:59 AM...Deorbit burn complete
11:50:54 AM...Entry interface
11:55:57 AM...1st roll command to left
12:05:41 PM...1st left-to-right roll reversal
12:16:13 PM...Velocity less than mach 2.5
12:18:27 PM...Velocity less than mach 1
12:19:07 PM...259-degree left turn to runway 15
12:22:42 PM...Landing
jumpjack
31-07-2009, 12:46
Primo tentativo - Orbita n. 248
http://www.spaceflightnow.com/shuttle/sts127/090730fd16/ksctrack2.jpg
Ma come funziona il rientro? Lo shuttle va "in retromarcia" finchè rallenta alla velocità giusta usando i motori, poi si gira e plana?
Ma come funziona il rientro? Lo shuttle va "in retromarcia" finchè rallenta alla velocità giusta usando i motori, poi si gira e plana?
non proprio, lo shuttle scende con la parte inferiore in avanti per sfruttare il rivestimento termico e frena per attrito una volta raggiunta una quota ragionevolmente bassa e una velocità compatibile plana fino a terra e frena con i paracadute
http://www.sidereus-nuncius.info/wp-content/uploads/imgpag/sts-profilo-missione.jpg
1327 GMT (9:27 a.m. EDT)
GO FOR THE DEORBIT BURN! Weather conditions at the Kennedy Space Center is acceptable to welcome home the space shuttle this morning, allowing entry flight director Bryan Lunney in Mission Control to give final approval for Endeavour to perform the deorbit burn at 9:41:10 a.m. EDT that will commit the spacecraft for the journey back to Earth.
Touchdown in Florida on Runway 15 is set for 10:48 a.m. EDT, completing a mission that finished construction of the Japanese science facilities at the international space station.
The latest weather outlook for landing time removed the chance of showers within 30 miles of the runway, giving an official "go" forecast.
non proprio, lo shuttle scende con la parte inferiore in avanti per sfruttare il rivestimento termico e frena per attrito una volta raggiunta una quota ragionevolmente bassa e una velocità compatibile plana fino a terra e frena con i paracadute
*
http://upload.wikimedia.org/wikipedia/commons/thumb/a/a7/Nasa_Shuttle_Test_Using_Electron_Beam_full.jpg/750px-Nasa_Shuttle_Test_Using_Electron_Beam_full.jpg
Per rallentare usando gli SSME avrebbe bisogno della stessa quantità di propellente usata per il lancio (all'incirca), cosa chiaramente poco realizzabile. Per questo motivo tutte le capsule/veicoli veicoli evitano il problema rallentando grazie all'attrito con l'atmosfera.
1344 GMT (9:44 a.m. EDT)
DEORBIT BURN COMPLETE. Endeavour has successfully completed the deorbit burn for the trip back home. Landing is scheduled for 10:48 a.m. EDT at the Cape to conclude this latest shuttle run to the space station.
1448 GMT (10:48 a.m. EDT)
TOUCHDOWN! Main gear touchdown. Pilot Doug Hurley is putting out the drag chute as commander Mark Polansky brings the nose gear to the surface of Runway 15.
1449 GMT (10:49 a.m. EDT)
WHEELS STOP. Shuttle Endeavour and crew have safely returned from their thrilling spaceflight that mixed delicate robotics with the muscle of spacewalkers to continue constructing and maintaining the International Space Station. The mission gave the orbiting complex an outdoor science research facility for astronomy and probing the exposed conditions of space, pre-staged critical spare parts for the outpost and replaced aging batteries in the power grid.
jumpjack
31-07-2009, 17:53
mi sono espresso male, con "rientro" intendevo "uscita dall'orbita", che ora so chiamarsi "de-orbiting", e, come ben spiega la figura, avviene appunto "in retromarcia".
Che planava lo sapevo, l'avevo anche detto! ;)
mi sono espresso male, con "rientro" intendevo "uscita dall'orbita", che ora so chiamarsi "de-orbiting", e, come ben spiega la figura, avviene appunto "in retromarcia".
Che planava lo sapevo, l'avevo anche detto! ;)
Ok ,avevo capito male :D
In particolare il motore usato è l'OMS (http://en.wikipedia.org/wiki/Space_Shuttle_Orbital_Maneuvering_System) ovvero i due "piccoli" a sinistra e a destra degli SSME (in alto):
http://upload.wikimedia.org/wikipedia/commons/thumb/9/90/SSME1.jpg/401px-SSME1.jpg
SFN:
Shuttle Endeavour and crew are home safe and sound
http://www.spaceflightnow.com/news/images/ni0907/31landing_400.jpg
Shuttle Endeavour and crew have safely returned from their thrilling spaceflight that mixed delicate robotics with the muscle of spacewalkers to continue constructing and maintaining the International Space Station. Touchdown on Kennedy Space Center's runway came at 10:48 a.m. EDT.
http://www.spaceflightnow.com/shuttle/sts127/090731fd17/index.html
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