Dragon CRS1, Orbcomm 2G=Falcon 9 v1.0 - Canaveral SLC-40 - 08.10.12 00:35 UTC

[SFN]

ссылка на цитируемый документ http://www.orbcomm.com/Collateral/Documents/English-US/OG2%20Prototype.pdf

[Salo]

А на этом сайте об этом событии ни единого слова:
http://www.spacex.com/updates.php
http://www.spacex.com/media.php

[Salo]

http://www.parabolicarc.com/2012/10/12/spacex-nasa-form-investigation-board-on-falcon-9-engine-failure/
SpaceX, NASA Form Investigation Board on Falcon 9 Engine Failure
Posted by Doug Messier
on October 12, 2012, at 6:18 pm
   

Debris from the rupture of a Falcon 9 engine panel during the Oct. 7 launch.

Update / SpaceX CRS-1 Mission: October 12

NASA and SpaceX announce that they have jointly formed a CRS-1 Post-Flight Investigation Board. This board will methodically analyze all data in an effort to understand what occurred to engine 1 during liftoff of the CRS-1 mission on Sunday, October 7. While Falcon 9 was designed for engine out capability and the Dragon spacecraft has successfully arrived at the space station, SpaceX is committed to a comprehensive examination and analysis of all launch data, with the goal of understanding what happened and how to correct it prior to future flights. Additional information will be provided as it is available.

[onka]

А что это?

Защитные двери из арматури, которие закривают ночю?

[SFN]

А что это?

Защитные двери из арматури, которие закривают ночю?

Их ставят на гермоадаптер, чтобы русские космонавты по ночам не тырили технологические секреты Спейсекса из Дракона))))

Это резинки для фиксации барахла.

[LRV_75]

Роман, это для вас слишком сложно

Дебилушка, у меня два высших образования, техническое и экономическое и это все применяется на практике давно. Вряд ли мне будет сложно распознавать, что Вы опять бредите :wink:  

Если Вы не понимаете, что Драгон создается за деньги НАСА и для нужд НАСА, то мне Вам нечем помочь

[avmich]

Роман, это для вас слишком сложно

Дебилушка, у меня два высших образования, техническое и экономическое и это все применяется на практике давно. Вряд ли мне будет сложно распознавать, что Вы опять бредите :wink:  :)

Если Вы не понимаете, что Драгон создается за деньги НАСА и для нужд НАСА, то мне Вам нечем помочь

У Майкла Гриффина семь образований. И помогло ему это?

Давайте не будем засорять форум :( . Валерий?..

[Salo]

 Aleks1961 пишет:
SpaceX Mission Resupplies ISS, Loses OG2 Satellite
http://www.aviationweek.com/Article.aspx?id=/article-xml/AW_10_15_2012_p30-505744.xml :arrow:

October 15, 2012

Amy Svitak Paris

The success of Space Exploration Technologies' first cargo resupply mission to the International Space Station (ISS) may mask the fact that the rocket's first commercial satcom mission, launched Oct. 7, must be judged a failure.

SpaceX's recent move into the commercial telecom market finds it serving two very different masters: NASA, its anchor customer, which has invested hundreds of millions in developing the Falcon 9 rocket and Dragon cargo vessel and which has been more than pleased with their performance to date; and the commercial satcom market, which has generated more than $1 billion in order backlog for SpaceX, although the company has yet to deliver a spacecraft to a commercial orbit.

The anomaly that crippled one of the Falcon 9's Merlin 1C engines on its first commercial cargo mission for NASA did nothing to dampen the agency's enthusiasm for the vehicle. If anything, as SpaceX points out, it proved the reliability of a launcher that can fulfill its space and cargo-delivery missions with an engine out.

But the launch, the first of 12 such missions to deliver 20,000 kg (44,000 lb.) of cargo to the ISS under a $1.6 billion Commercial Resupply Services contract with NASA, was also Falcon 9's first mission for a private-sector customer, satellite messaging services provider Orbcomm, whose prototype second-generation OG2 satellite flew as a secondary payload.

While the Merlin engine anomaly did not disturb the ISS mission, it led to the total loss of the OG2 satellite, a predecessor to a constellation of 18 second-generation spacecraft to be launched on Falcon 9 vehicles in the next two years.

SpaceX's vice president of marketing and communications, Katherine Nelson, says the engine failure meant putting Orbcomm's satellite into its intended orbit would have exceeded safety thresholds set by NASA for operations near the ISS. As a result, OG2 was placed into a considerably lower orbit fr om which it quickly degraded over the course of three days before reentering the Earth's atmosphere Oct. 10. Orbcomm said Oct. 11 it has filed a notice of claim under its launch insurance policy for the loss of the OG2 prototype, which was insured for up to $10 million. That would largely offset the expected cost of the satellite and its launch, it says.

"We appreciate the complexity and work that SpaceX put into this launch," Orbcomm CEO Marc Eisenberg said Oct. 11. "SpaceX has been a supportive partner, and we are highly confident in their team and technology."

SpaceX was quick to acknowledge the first-stage engine anomaly that occurred when a sudden pressure loss without an explosion led to a shutdown command about 79 sec. into the nearly 10-min. ascent to orbit. But with Dragon speeding toward the ISS, SpaceX sought to accent the positive.

"Like the Saturn V [which experienced engine loss on two flights] and modern airliners, Falcon 9 is designed to handle an engine-out situation and still complete its mission," SpaceX said on its website Oct. 8. "No other rocket currently flying has this ability."

Notably absent from SpaceX's assessment of the launch mishap was any mention of OG2. But Nelson said Orbcomm knew the risks when it signed on for the Falcon 9 mission.

"Orbcomm requested that SpaceX carry one of their small satellites [weighing a few hundred pounds versus Dragon at over 12,000 pounds] on this flight so that they could gather test data before we launch their full constellation next year," Nelson said Oct. 11. "The higher the orbit, the more test data they can gather, so they requested that we attempt to restart and raise altitude. NASA agreed to allow that, but only on condition that there be substantial propellant reserves, since the orbit would be close to the space station."

Nelson said Orbcomm understood the orbit-raising maneuver was tentative. "SpaceX would not have agreed to fly their satellite otherwise, since this was not part of the core mission and there was a known, material risk of no altitude raise," she said.

Whether there was a material risk of losing the spacecraft entirely just days after launch is unclear. Orbcomm did not return telephone queries by press time.

Shortly after the launch, Orbcomm said it was working with prime contractor Sierra Nevada Corp. to raise OG2's orbit using onboard propulsion, a workaround that probably would have depleted fuel reserves and potentially lim ited the spacecraft's service life to weeks. Following the spacecraft's deorbit, Orbcomm said it had "verified various functionality checkouts," including power, attitude-control, thermal and data-handling, as well as the satellite's unique communications payload, which incorporates a highly reprogrammable software radio with common hardware. Orbcomm says the data will allow it to focus on completing and launching the OG2 satellites as the primary mission payloads on two planned Falcon 9 launches—the first in mid-2013 and the second in 2014—directly into their operational orbit.

"Had Orbcomm been the primary payload on this mission, as planned for the upcoming launches, we believe the OG2 prototype would have reached the desired orbit," Orbcomm said in its Oct. 11 statement.

Under the terms of its $46.6 million agreement with SpaceX, Orbcomm planned to launch its 18 next-generation spacecraft atop six now-defunct Falcon 1e rockets, an enhanced version of the Falcon 1 light-launcher that suffered three failures before delivering Malaysia's RazakSat to low Earth orbit in July 2009.

When SpaceX shelved plans to continue operating the small-class Falcon 1e, OG2 payloads were shifted to the Falcon 9 manifest. Given the Falcon 9's advertised price of around $59 million per launch, Orbcomm is getting a bargain, despite the loss of OG2.

Nelson says the Orbcomm launch dates are not yet set, though the company's 2013 manifest lists at least seven launches. A dedicated Orbcomm mission would bring that to eight.

The current mishap is not SpaceX's first stumble in the commercial satcom market. In 2011, it lost an arbitration dispute with Avanti Communications of London when it was unable to meet the fleet operator's contracted schedule for launching the Hylas-1 telecommunications satellite. SpaceX was forced to return Avanti's $7.56 million launch deposit, and the Hylas-1 satellite was lofted by a European Ariane 5.

Nor was Falcon 9's engine anomaly a first—during its inaugural flight June 4, 2010, the rocket appeared to experience a slight roll at liftoff. In addition, a few days after that launch, SpaceX founder and CEO Elon Musk said he was surprised by a pronounced roll that occurred following the rocket's upper-stage firing, though it did not affect the payload's insertion vector and had no adverse impact on the mission.

[Not]

Их ставят на гермоадаптер, чтобы русские космонавты по ночам не тырили технологические секреты Спейсекса из Дракона))))

СпейСекса, говорите?  :mrgreen:

[Дем]

Их ставят на гермоадаптер, чтобы русские космонавты по ночам не тырили технологические секреты Спейсекса из Дракона))))
Это резинки для фиксации барахла.

СпейСекса, говорите?  :mrgreen:

Судя по размеру - вполне может и человека зафиксировать. А то и пару сразу

[Space Alien]

Отстыковка от модуля Harmony:

 
Отстыковка от Canadarm-2:
 


Американский корабль Dragon отправился к Земле
http://ria.ru/space/20121028/907435720.html

[Space Alien]

Приводнение:
   

[max_schmurz]

Так все-таки, были на борту Дракона при спуске российские грузы?

[Valerij]

.
Небольшая галерея о доставке Дракона в порт:
.






.
Галереи полностью:
http://spaceflight.nasa.gov/gallery/images/station/crew-33/inflight/ndxpage17.html
http://spaceflight.nasa.gov/gallery/images/station/crew-33/inflight/ndxpage18.html
http://spaceflight.nasa.gov/gallery/images/station/crew-33/inflight/ndxpage19.html

[instml]

SpaceX, NASA scrutinize anomalies fr om cargo flight

Engineers are combing through data fr om SpaceX's October cargo mission to the International Space Station, examining a rocket engine failure, electronics glitches fr om suspected radiation, and a power loss that could have imperiled precious medical samples returned from the outpost, NASA officials said Wednesday.
SpaceX's Dragon spacecraft successfully completed the commercial resupply flight, but the mission had to overcome several anomalies almost from the moment of its Oct. 7 launch.
The mission's Falcon 9 booster suffered an engine failure moments after liftoff from Cape Canaveral, Fla., and investigators from SpaceX and NASA have found "no smoking gun" on the cause of the problem, according to Mike Suffredini, NASA's space station program manager.
The rocket's computer detected a sudden loss in pressure in the combustion chamber of one of the first stage's Merlin 1C engines and commanded the engine to shut down 79 seconds after liftoff, according to SpaceX.
The company formed a joint review team with NASA to find the cause of the engine failure, but despite going over an "enormous amount of data" in the last month, investigators have not determined the root cause of the engine problem, Suffredini said Wednesday in a meeting of the NASA Advisory Council's human exploration and operations subcommittee.
Elon Musk, SpaceX's CEO and chief technology officer, said Wednesday it will "probably be several weeks" before the investigation releases any findings.
According to Suffredini, who must sign off before NASA cargo is loaded aboard a SpaceX spacecraft, the suspect engine from the Oct. 7 launch underwent extensive testing before it flew.
"It was never tested beyond any of its lim its," Suffredini said. "It just spent a lot of time doing testing of different things before it actually flew, but it's not the only engine that's flown like that."
Views of the launch from optical tracking cameras around Cape Canaveral showed a noticeable change in color and shape of the exhaust plume from the Falcon 9 first stage at the time of the engine failure. Footage showed what appeared to be debris falling away in the wake of the rocket, but SpaceX said the material was from an aerodynamic engine cover. The engine itself stayed intact, the company said.
The Falcon 9 rocket continued into orbit, compensating for the lost engine by burning its other first stage engines and second stage longer. The mishap left the Falcon 9 with too little propellant to safely place its secondary payload - an Orbcomm communications satellite - in the correct orbit.
The Orbcomm satellite was a prototype for a new generation of data communications satellites, but the craft fell from orbit less than a week after launch. Orbcomm declared the mission a total loss and filed an insurance claim.
The Dragon capsule reached the space station Oct. 10, making an automated rendezvous before astronauts snared the spacecraft with a robotic arm.
The crew unloaded 882 pounds of supplies from Dragon's pressurized compartment and stowed nearly one ton of cargo back into the spacecraft for the trip back to Earth.
While the ship was berthed with the space station, a suspected radiation hit took out one of Dragon's three flight computers, Suffredini said.
Dragon's flight computers are not hardened to resist radiation, according to Suffredini, but the craft is designed to function with only two main computers operating at one time.
Engineers believe radiation also shut down one of Dragon's three GPS navigation units, a propulsion computer and an ethernet switch during the flight. Controllers at SpaceX's headquarters in Hawthorne, Calif., recovered those systems to full operability, Suffredini said.
Most spacecraft, including the station's European and Japanese resupply freighters, have radiation-hardened computers. But standard computers are less expensive and usually run faster, according to engineers.
The Dragon capsule departed the space station and parachuted into the Pacific Ocean on Oct. 28.
The craft carried refrigerated medical samples, including vials of blood and urine collected from astronauts, and other sensitive payloads for rapid shipment to laboratories.
The biological samples were in cold bags and a GLACIER freezer, but the freezer may have lost power during splashdown, Suffredini said.
The capsule splashes down at a velocity of about 11 mph, dipping much of the spacecraft underwater before rebounding to the surface and floating. Engineers believe sea water leaked into electrical boxes, causing the freezer and three cabin coolant pumps to lose power. The GLACIER freezer was set at minus 139 degrees Fahrenheit. When SpaceX's recovery team opened the capsule, the freezer's temperature was minus 85 degrees, according to NASA.
Scientists are studying the medical samples, which were returned to NASA's Johnson Space Center, said Josh Byerly, an agency spokesperson.
"It wasn't a severe impact in terms of the temperature increase," said Byerly, who added the power snafu would not affect any contractual payments to SpaceX.
According to Suffredini, although temperatures exceeded preset tolerances for some samples, researchers believe the temperature lim its were conservative.
"We're working our way through this, and we may lim it the cold stowage coming home [on the next flight]," Suffredini said.
Dragon is the only vehicle after the space shuttle's retirement capable of returning significant cargo from the space station to Earth.
Two days after splashdown, the capsule arrived at a port near Los Angeles on a barge and was shipped to SpaceX's test site in McGregor, Texas, for safing and unloading.
The October flight was the first of 12 SpaceX resupply missions to the space station. SpaceX has a $1.6 billion contract with NASA for commercial cargo services through 2016.
SpaceX's next Dragon mission to the space station is now scheduled for launch March 1, about a six-week delay from a Jan. 18 target launch date publicized before the launch of the previous mission.
Suffredini said the timing of SpaceX's next flight to the station was adjusted partly to accommodate a software update aboard the complex planned for early 2013.

http://www.spaceflightnow.com/falcon9/004/121114anomalies/

[Salo]

http://www.parabolicarc.com/2012/11/14/44264/

SpaceX Cargo Mission Suffered Other Anomalies

Posted by Doug Messier
on November 14, 2012, at 4:30 pm
 
SpaceX's recent cargo mission to the International Space Station experienced more problems than just an engine failure on the Falcon 9 booster. The problems included equipment shutting down due to a lack of radiation hardened components and a malfunctioning freezer carrying valuable experimental samples back to Earth for analysis.
ISS Program Manager Mike Suffredini briefed the NASA Advisory Council's Human Exploration and Operations Committee on Wednesday, Marcia Smith reports. The anomalies on the first commercial cargo mission included:
 
- One of three flight computers failed while Dragon was docked at ISS due to a suspected radiation hit. The computer was restarted but could not re-synchronize with the other two units.
 
- One of three GPS units, the Propulsion and Trunk computers and Ethernet switch also experienced suspected radiation hits, but they were recovered during a power cycle.
 
- All three coolant pumps failed after splashdown in the Pacific Ocean.
 
- Glacier freezer was at -65 degrees Centigrade © instead of the planned -95 degrees C when it was opened three hours after splashdown, causing some samples to exceed temperature limits.
 
- Problems occurred with one of the Dragon's Draco thrusters.
 
Suffredini said SpaceX is still looking for the cause of a sudden drop in pressure that caused one of the Falcon 9's Merlin engines to fail. NASA is participating in the investigation.
 
SpaceX's next cargo mission to ISS is set for March 2013. A delay is possible depending upon the outcome of the investigation into the engine failure.

[Ну-и-ну]

Гороскоп "под знаком .овна". .овночипы и .овнодвигатели.

[Lanista]

Мда, миссия "на грани"

[Valerij]

SpaceX and NASA Still Determining Reasons for Falcon 9 Engine Failure, Other Anomalies
   
Marcia S. Smith
Posted: 14-Nov-2012
Updated: 14-Nov-2012 05:57 PM
   
The overall success of SpaceX's first operational cargo mission to the International Space Station (ISS) last month overshadowed the fact that the mission also encountered several problems, including the failure of one of the nine Falcon 9 engines.
   
Speaking to the NASA Advisory Council's Human Exploration and Operations Committee today, ISS program manager Mike Suffredini said that Space X is still trying to determine what happened to the engine. NASA is participating in the investigation, he said, and a fault tree analysis is underway.
   
Several other problems also arose during the mission. While berthed to the ISS, one of the three computers on the Dragon spacecraft failed. Dragon can operate with only two computers, and SpaceX chose to proceed with the two functioning units rather than trying to fix the faulty unit while on orbit. According to Suffredini's charts, Flight Computer-B "de-synched" fr om the other two "due to a suspected radiation hit" and although it was rebooted successfully, it was "not resynched." Dragon experienced other anomalies because of radiation as well. One of three GPS units, the Propulsion and Trunk computers and Ethernet switch all experienced "suspected radiation hits," but all were recovered after a power cycle. Suffredini said that SpaceX is considering whether it needs to use radiation-hardened parts instead, but noted that "rad-hardened" computers, for example, not only are more expensive, but slower. He speculated that the company would ultimately decide to use rad-hardened components in the future unless it is cost-prohibitive.
   
Problems with one of the Draco thrusters and a loss of all three coolant pumps after splashdown also marred the mission. The Glacier freezer onboard Dragon used to return scientific samples fr om the ISS was at -65 degrees Centigrade (C) instead of the required -95 degrees C when it was accessed three hours after splashdown. Suffredini said that some of the samples "exceeded limits" (presumably temperature lim its), but that the lim its were conservative. How much of a problem the warmer temperature could cause apparently is not yet clear.
   
in response to a question, Suffredini said that although NASA does not have go/no-go authority over SpaceX launches, it does have influence as a customer. The company's contract requires it to deliver a certain amount of cargo to the ISS over a fixed period of time. If NASA is not sufficiently confident that the system works, it will not put its cargo aboard and "they don't get paid if I don't fly."
   
Despite these outstanding issues, Suffredini presented a timeline chart showing the next SpaceX mission to ISS scheduled for March 2013. That chart also listed the first flight of Orbital Science's Cygnus cargo spacecraft to the ISS for April 2013, but Suffredini advised the committee not to bank on it because he expects that date to slip.
   
As the briefing continued it became clear that a delay might be needed in any case because of an unresolved problem that arose when Japan's HTV cargo spacecraft was released from the ISS. The HTV automatically aborted the release when it detected an "off-nominal trajectory" resulting from friction between the grapple fixture and Canadarm2 that caused Canadarm2 to pull HTV as it was trying to back away. Suffredini said they are still investigating what happened. SpaceX uses a different configuration, so it is not issue for the next Dragon flight, he said, but Cygnus uses the same configuration as HTV and "we need to sort it out before Cygnus flies."
 

http://www.spacepolicyonline.com/news/spacex-and-nasa-still-determining-reasons-for-falcon-9-engine-failure
Менеджер программы МКС Майк Suffredini сказал, что продолжается анализ дерева отказов для определения причины отказа двигателя при запуске Дракона. Кроме того он сказал. что при необходимости SpaceX будет использовать радиационно стойкую элементную базу для Драконов, но здесь есть проблемы, потому, что радиационно стойкие элементы имеют меньшее быстродействие.
Следующий рейс Дракона к МКС намечен на март.
  З.Ы.
Миссия вполне успешна, но Дракон требует некоторой доработки.

[Valerij]

Проскользнула очень интересная дополнительная информация:

SpaceX, NASA scrutinize anomalies fr om cargo flight
BY STEPHEN CLARK
SPACEFLIGHT NOW
Posted: November 14, 2012
.....
According to Suffredini, who must sign off before NASA cargo is loaded aboard a SpaceX spacecraft, the suspect engine from the Oct. 7 launch underwent extensive testing before it flew.
.....
"It was never tested beyond any of its lim its," Suffredini said. "It just spent a lot of time doing testing of different things before it actually flew, but it's not the only engine that's flown like that."
.....

http://www.spaceflightnow.com/falcon9/004/121114anomalies/#.UKYS4W8xqiE
 .
Это еще один отчет о докладе  Майка Суффредини (Mike Suffredini). Новые результаты можно ожидать только через несколько недель. Суффредини сказал, что отказавший двигатель "подвергался обширному тестированию перед полетом".
.
Попытка перевода Промтом:
"Это никогда не проверялось вне ни одного из его пределов," сказал Саффредини. "Это только потратило большое тестирование выполнения времени различных вещей прежде, чем это фактически полетело, но это не единственный двигатель, этим управляют как этот."
.
Я понимаю это так, что на двигателях, использованных для этого полета, проводились какие-то другие (кроме обычных заводских) испытания, "никогда не превышавшие его пределов"? 
Мне кажется, что необходима дополнительная информация, она у НАСА и SpaceX есть и они работают над этим.
.