SLS - space launch system (3-я попытка)

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Chris B - NSF‏ @NASASpaceflight 13 мин. назад

IGNITION! RS-25 E5025 fires up for a full duration firing at Stennis!




11 мин. назад

PO-WER!

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6 мин. назад

Test Complete! Third Retrofit 1b series test, with new "hot-isostatic press" (HIP) bonded main combustion chamber (MCC), "3-D printed" pogo accumulator assembly, and new insulation system for the high-pressure fuel turbopump (HPFTP).

https://www.nasaspaceflight.com/2018/09/development-engine-rs-25-testing-2/ ...

- by Philip Sloss.

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Live from Stennis Space Center

https://scontent-arn2-1.xx.fbcdn.net/v/t42.9040-29/10000000_1177341689070316_7117352582950944768_n.mp4?_nc_cat=106&efg=eyJ2ZW5jb2RlX3RhZyI6InNkIn0%3D&oh=256aafc3bc00db37db04b8ca561ac8b5&oe=5BAAD6A9 (16:46)

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NASA Stennis Live Stream

NASA Stennis

Трансляция началась 30 минут назад

(16:46)

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Test Series on New RS-25 Rocket Engine Components Moving Forward

NASA Stennis

Опубликовано: 25 сент. 2018 г.

The third in a series of RS-25 rocket engine hot fire tests for NASA's Space Launch System (SLS) Program was conducted September 25 at NASA's Stennis Space Center. The test was another certification of an RS-25 flight controller that helps the engine communicate with the SLS rocket. It also marked the seventh test of a 3D-printed pogo accumulator assembly that helps prevent the rocket from becoming unstable in flight and the third test of a main combustion chamber fabricated using a new money- and time-saving bonding technique.

(8:48 )

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https://www.nasa.gov/image-feature/nasa-right-on-schedule-with-rs-25-flight-controller-test

Sept. 26, 2018

NASA Right on Schedule with RS-25 Flight Controller Test



NASA stayed right on schedule with the third in a series of scheduled RS-25 rocket engine tests at Stennis Space Center near Bay St. Louis, Mississippi. The successful hot fire of RS-25 developmental engine No. 0525 met all test objectives and featured several key elements, most notably an acceptance test of an engine flight controller for use by NASA's new Space Launch System (SLS) rocket. The hot fire also represented the seventh test of a 3D-printed pogo accumulator and the third test of a main combustion chamber fabricated using a bonding technique designed to save time and money. The flight controller units are a key component of the RS-25 engine, serving as the "brain" to help it communicate with the rocket and to provide control of its operation and internal health diagnostics. The 3D-printed pogo accumulator assembly is another component that dampens potential propellant pressure oscillations that can cause a rocket to become unstable in flight. The main combustion chamber was fabricated using a bonding technique called hot isostatic pressing (HIP), which saves considerable time and money over more traditional methods. The HIP process uses high pressure and heat to create bonds that can withstand extreme stress. Engineers are testing RS-25 engines to help power the new SLS rocket, built to carry humans deeper into space than ever before, including to the Moon and Mars. Four RS-25 engines will help power the SLS at launch, providing 2 million pounds of combined thrust. The engines will fire in conjunction with a pair of solid rocket boosters to provide more than 8 million pounds of total thrust to lift SLS into orbit. NASA is testing all RS-25 engines and flight components for the rocket at Stennis, as well as the core stage that will be used on the first SLS flight. Exploration Mission-1 will test the new rocket and carry an uncrewed Orion spacecraft into space beyond the Moon. Exploration Mission-2 will be the first flight to carry humans aboard the Orion spacecraft to deep space. The Sept. 25 test is part of a series scheduled to continue into 2019. All of the tests will feature flight controllers and specific objectives to test and evaluate engine capabilities and performance. RS-25 tests at Stennis are conducted by a team of NASA, Aerojet Rocketdyne and Syncom Space Services engineers and operators. Aerojet Rocketdyne is the RS-25 engine prime contractor. Syncom Space Services is the prime contractor for Stennis facilities and operations.

Last Updated: Sept. 26, 2018
Editor: LaToya Dean

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Chris B - NSF‏ @NASASpaceflight 22 мин. назад

FEATURE ARTICLE:
Navigating the twists and turns steering SLS Development -

https://www.nasaspaceflight.com/2018/10/navigating-twists-turns-steering-sls-development/ ...

- By Philip Sloss.

Render by Nathan Koga for NSF/L2 (@kogavfx)

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Northrop Grumman‏Подлинная учетная запись @northropgrumman 7 ч. назад

Employees at our Promontory, Utah, facility move part of the @NASA_SLS core from the preparation stand to the EM-2 forward cast at the facility's Large Motor Casting Pit. The cycle time from start to finish at the casting pits is four weeks.
#MFGDay18 @MfgDay #NorthropGrumman

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Northrop Grumman‏Подлинная учетная запись @northropgrumman 12 мин. назад

We manufacture the 5-segment boosters for @NASA_SLS at our Promontory, Utah, facility. Here, employees are preparing to mix propellant in one of our 600-gallon bowls. It takes up to 45 bowls to fill one segment!
#MFGDay18 @MfgDay #NorthropGrumman

[Чебурашка]

Ходят слухи, что NASA дала предписание подрядчикам полностью прекарить работу на новый верхней ступенью EUS, и значит над Block IB 
Причина - перерасход средств на изготовление Core Stage

[axxenm]

Чебурашка пишет:
Ходят слухи, что NASA дала предписание подрядчикам полностью прекарить работу на новый верхней ступенью EUS, и значит над Block IB
Причина - перерасход средств на изготовление Core Stage

и какие могут быть последствия?
очередные задержки?

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Чебурашка пишет:
Ходят слухи, что NASA дала предписание подрядчикам полностью прекарить работу на новый верхней ступенью EUS, и значит над Block IB
Причина - перерасход средств на изготовление Core Stage

Читаешь это
 https://spacenews.com/boeing-plans-changes-to-sls-upper-stages/ 

они и деньги тратят на занимаются закупкой дополнительных промежуточный верхней ступеней ICPS, т.к. ее пусков должно быть больше. Так же их надо модернизировать. 
А новую нужно совершенствовать и прочее, времени до EUS еще много (   )

Shannon said NASA is handling procurement of the additional two ICPS units from United Launch Alliance, which based it on the Delta 4 upper stage. That should be completed in the "next couple months," he said.

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Тут как говорится, лучше синица в руках (Block I), чем журавль в небе (Block IB)

А вообще, 
Block I - это 26 тонн TLI
Block IB - 37 тонн

а Saturn V был - 48 тонн..

Тут желательно, поднапрячься и надуть SLS до возможностей Saturn V чтобы войти в историю с самой большой ракетой в истории (извиняюсь за тавтологию) 

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Chris B - NSF‏ @NASASpaceflight 5 ч. назад

FEATURE ARTICLE:
Northrop Grumman Innovation Systems readies SRBs for first SLS flights -

https://www.nasaspaceflight.com/2018/10/ngis-readies-srbs-first-sls-flights/ ...

Covers the initial flights of SLS, that throat plug debris concern mitigation and preps to build the EM-3 boosters.

- By Philip Sloss (Lead render by @kogavfx)

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