SpaceX Falcon 9

[Искандер]

Alex_II пишет:

pnetmon пишет:
Продавать РН видится маловероятным...

Почему бы и нет, если многоразовые? Б-737 в принципе всем желающим, у кого есть деньги, продают...

Не знаю как с Falcon, но средне-тяжелый носитель с эксплутационными характеристиками ITS  (заявленная кратность первой ступени 1000 раз, меньший размер => пусть 100раз) вполне себе Б-737 товар на продажу.

[Антон Матвеев]

Искандер пишет:
Не знаю как с Falcon, но средне-тяжелый носитель с эксплутационными характеристиками ITS(заявленная кратность первой ступени 1000 раз, меньший размер => пусть 100раз) вполне себе Б-737 товар на продажу. 

А СК и ТК им тоже SpaceX будет строить?

[triage]

Ну даже до кратности 100 раз нужно хотя бы 10 раз.
А какие есть примеры продажи РН? Союз в Куру, ранее американцы японцам....
И все уткнется в нераспространение технологий.

[Max Andriyahov]

А какие есть примеры продажи РН? Союз в Куру, ранее американцы японцам

Корейцам вроде Ангару собрались продать?

[Валерий Жилинский]

Антон Матвеев пишет:

Искандер пишет:
Не знаю как с Falcon, но средне-тяжелый носитель с эксплутационными характеристиками ITS(заявленная кратность первой ступени 1000 раз, меньший размер => пусть 100раз) вполне себе Б-737 товар на продажу.

А СК и ТК им тоже SpaceX будет строить?

Ну, "тюльпан" на их СК городить не придётся. Но переохлаждённое топливо требует очень четких действий стартовой команды.

[triage]

Max Andriyahov пишет:

А какие есть примеры продажи РН? Союз в Куру, ранее американцы японцам

Корейцам вроде Ангару собрались продать?

Когда. Только запуск спутника с Плесецка. Или Южная Корея высказала желание купить? а то продавать Ангару многим кому хотят.

[vlad7308]

pnetmon пишет:

Max Andriyahov пишет:

А какие есть примеры продажи РН? Союз в Куру, ранее американцы японцам

Корейцам вроде Ангару собрались продать?

Когда. Только запуск спутника с Плесецка. Или Южная Корея высказала желание купить? а то продавать Ангару многим кому хотят.

речь, видимо, про УРМ-1, на базе которого сделана корейская РН

[triage]

vlad7308 пишет:
речь, видимо, про УРМ-1, на базе которого сделана корейская РН

Этим летом, осенью СМИ рождали сенсацию про продажу легкой ангары Корее, потом пошли уточнения.

[Alex_II]

pnetmon пишет:
И все уткнется в нераспространение технологий.

Или оно будет пересмотрено. Для ракет с криогенным топливом это таки бред, эти ограничения...

[Alex_II]

pnetmon пишет:
а то продавать Ангару многим кому хотят.

А потенциальных покупателей спросили? Или как всегда?

[Kap]

Валерий Жилинский пишет:
Но переохлаждённое топливо требует очень четких действий стартовой команды.

По-этому с переходом на переохлажденное предстартовую подготовку свалили на роботов.

[Штуцер]

Валерий Жилинский пишет:
Но переохлаждённое топливо требует очень четких действий стартовой команды.

Любая заправка требует очень четких действий.

[Salo]

Peter B. de Selding ‏@pbdes  29 мин.29 минут назад  
SES(6): CFO says SES-10 tentatively set for January launch on SpaceX Falcon 9. (This mission will inaugurate reuse of Falcon 9 1st stage.)

[Salo]

Stephen Clark ‏@StephenClark1  58 мин.58 минут назад  
Update on Falcon 9 failure investigation from SpaceX. Focus on burst composite vessel caused by temperature & pressure of cryogenic helium.

[Salo]

http://www.spacex.com/news/2016/09/01/anomaly-updates

[Salo]

http://spacenews.com/spacex-narrows-down-cause-of-falcon-9-pad-explosion/

SpaceX narrows down cause of Falcon 9 pad explosion
by Jeff Foust — October 28, 2016  

A SpaceX Falcon 9 rocket explodes Sept. 1 during fueling operation in preparation for a static-fire test. Credit: USLaunchReport.com video
 
NEW YORK — SpaceX said Oct. 28 that it is able to replicate the failure of a helium tank that is suspected, but yet to be confirmed, as the cause of Falcon 9 pad explosion nearly two months ago.
In a statement, the company said it is focusing its investigation on tanks made of fiber composite materials used to store helium within the liquid oxygen propellant tank of the Falcon 9's second stage. In its last public statement about the investigation, issued Sept. 23, the company said the cryogenic helium system in the propellant tank suffered a "large breach" immediately before the explosion.
"The root cause of the breach has not yet been confirmed, but attention has continued to narrow to one of the three composite overwrapped pressure vessels (COPVs) inside the [liquid oxygen] tank," SpaceX said in its new statement.
The company said it's able to replicate the failure of a helium tank based on the condition of the helium being loaded into it. "These conditions are mainly affected by the temperature and pressure of the helium being loaded," SpaceX said.
The new statement appears to confirm recent statements by company officials that suggested an issue with how the launch vehicle is prepared for launch, and not a flaw with the vehicle itself, caused the explosion during preparations for a static-fire test. SpaceX President Gwynne Shotwell, speaking at the annual meeting of the National Academy of Engineering Oct. 9, said the company was "homing in" on the cause of the accident, adding she felt it unlikely it was caused by "a vehicle issue or an engineering design issue but more of a business process issue."
In comments that leaked out after an Oct. 13 presentation at the National Reconnaissance Office, SpaceX Chief Executive Elon Musk suggested solid oxygen formed within one of the COPVs. "Under pressure it could have ignited with the carbon," he said, according to a leaked transcript of his speech. "This is the leading theory right now, but it is subject to confirmation."
SpaceX said it's continuing to seek the root cause of the pad explosion while also preparing for a return to flight. "SpaceX's efforts are now focused on two areas – finding the exact root cause, and developing improved helium loading conditions that allow SpaceX to reliably load Falcon 9," the company stated. It added it will soon resume tests Falcon 9 stages at its Texas test site as "an important milestone" towards resuming launches.
Those launches, the company said, will resume fr om the company's pad at Vandenberg Air Force Base in California and Launch Complex 39A at Florida's Kennedy Space Center, both of which the company said "remain on track to be operational" to support a return to flight before the end of the year. The company has not disclosed the damage that Space Launch Complex 40 at Cape Canaveral suffered in the pad explosion or when it would be able to resume hosting launches.
Josh Brost, director of government business development at SpaceX, said at the American Astronautical Society's Wernher von Braun Memorial Symposium Oct. 26 in Huntsville, Alabama, that the company was "less than a month" from formally activating Launch Complex 39A for Falcon 9 launches. "39A is wh ere we'll return to flight on the East Coast, hopefully later this year," he said.
SpaceX's customers, meanwhile, are also hoping that the company returns to flight this year. "We've been on hold since SpaceX's launch pad incident at Cape Canaveral eight weeks ago and have been following the investigation closely to determine when SpaceX will be able to return to flight," said Matt Desch, chief executive of Iridium, during an Oct. 27 conference call. Prior to the pad explosion that destroyed the Amos-6 satellite, Iridium was scheduled to fly next, launching the first ten of its Iridium Next satellites from Vandenberg.
Desch said on the call that Iridium is participating in SpaceX's accident investigation team and believes "SpaceX is conducting a very thorough process" in that investigation, but declined to speculate when SpaceX would be ready to start launching Iridium's satellites.
"I remain hopeful that they'll return to launching this year," he said. "Also, I don't know if Iridium Next will be SpaceX's first launch once they return to flight or whether they might schedule a launch from Florida ahead of us. Either way, we're comfortable with SpaceX's investigation and the progress they're making and I assure you that we won't proceed to launch if we aren't confident in SpaceX and their investigation outcome."

[Apollo13]

https://www.reddit.com/r/spacex/comments/5a6urw/mcgregor_update_thanks_to_bill_carton_new_core_on/

Here's a link that includes all of his updates, really good stuff. Thanks u/theroadie! Here are some of the most important bits:

[/li]
• So what's on site I can discuss? JCSAT14 is off the stand in a hangar after its 8 full duration burns. Booster 1029 is on the stand getting ready for its test. 1030 arrived fr om Hawthorne as we knew and is next up on the test stand. The FH center core structural test article is in a hangar. The structural test stand contains a FH side core for octaweb stress testing.
• New hangar has some unique red trim. Not sure what its ultimate use will be. Dark stains wh ere I'm guessing some copv testing went on.
• The dragon is a used returned one. Only one I spotted. Not certain of serial numbers of either of the test articles.
• What used to be the welding area is now an engine workshop so they can do more procedures there without sending engines back to Hawthorne. Welders have a nice new shed of their own.
  

Do you happen to know what serial number the core sitting at VAFB (F9-030?) is?

At the airport to go home. The stuctural test stand is not empty. Had a FH side core in it that nobody I know of spotted leaving Hawthorne. All I knew about was the obvious engineless FH center core.
They started painting serial (not flight) numbers on the base of the booster, but in a position it will be obscured by integrated legs. Will photoshop one up when I get home.

FH side core? New or used?

New, engineless, test article. If it passes testing and validates their models, I expect it could be completed and flown. Might be missing a lot of guts and plumbing.

There were similar structural articles for the previous F9 versions weren't there? Were those ones converted to flight hardware?

1.0 test article turned into grasshopper and 1.1 into dev1

What about Dev2? T'was built too early to be a v1.2 test article conversion. I assume it was just another v1.1

Last I saw that, it was doing tanking-checks at Vandenberg last year. At that time, it was still expected to be used for the in-flight abort.

[Apollo13]

На стенде для огневых испытаний в Макгрегоре установлена ступень с/н 1029. Ступень 1030 прибыла из Хоторна в Макгрегор и находится в ангаре. Она следующая на тестирование.

Еще одна ступень судя по всему находится в Ванденберге.

Макет для прочностных испытаний 1.0 был переделан в Кузнечик. Макет для прочностных испытаний 1.1 был переделан в Dev1.

[Salo]

Chris B - NSF ‏@NASASpaceflight 23 мин.23 минуты назад
ARTICLE: SpaceX prepares Falcon 9 test; AMOS-6 investigation narrows - By @CwG_NSF https://www.nasaspaceflight.com/2016/10/spacex-prepares-upcoming-falcon-9-amos-6/ ... (McGregor hot fire imminent)
 
 
 

[Штуцер]

Salo пишет:
https://www.nasaspaceflight.com/2016/10/spacex-prepares-upcoming-falcon-9-amos-6/ ...

Importantly for SpaceX, "Through extensive testing in Texas, SpaceX has shown that it can re-create a COPV failure entirely through helium loading conditions.  These conditions are mainly affected by the temperature and pressure of the helium being loaded.

Какие-то огруглые формулировки. Может, из экономии, они не идут на эксперимент с штатным баллоном и ЖК?
Довольствуются образцами?