SLS - space launch system (3-я попытка)

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https://www.nasa.gov/image-feature/nasa-continues-fall-series-of-rs-25-engine-tests

Oct. 12, 2018

NASA Continues Fall Series of RS-25 Engine Tests



The arrival of fall in south Mississippi means billowing clouds of steam exhaust is in the air as NASA continues a series of RS-25 engine tests at Stennis Space Center near Bay St. Louis. A team of operators conducted another successful 500-second RS-25 hot fire on the A-1 Test Stand at Stennis on Oct. 11, marking the fourth in a series that will extend into 2019. Once again, the hot fire features an acceptance test of an RS-25 engine controller for use on a future flight of NASA's new Space Launch System (SLS) rocket. RS-25 testing represents a critical step in development of the SLS. A quartet of RS-25 engines, firing simultaneously, will provide a combined 2 million pounds of thrust to help launch the new rocket. NASA has been testing RS-25 engines at Stennis for SLS use since early 2015. The initial engines are former space shuttle main engines, modified to provide the additional power needed for the SLS rocket. The new flight controller is the central component of the modification and will operate as the RS-25 "brain," helping the engine communicate with the SLS rocket and providing precision control of engine operation and internal health diagnostics. In addition to the flight controller, this hot fire also featured continued testing of two other new engine components – a 3D-printed pogo accumulator and main combustion chamber fabricated using an innovative bonding technique. The 3D-printed pogo accumulator 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. In addition to testing components, operators also continue to explore various engine performance levels and limits. Each RS-25 hot fire allows operators to test the performance and reliability of engine components and moves NASA closer to actual launch of the SLS on its maiden missions. The SLS 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. 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: Oct. 12, 2018
Editor: LaToya Dean

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No Small Steps: "State of the SLS Rocket"

NASA's Marshall Space Flight Center

Опубликовано: 15 окт. 2018 г.
Опубликовано: 18 окт. 2018 г.

NASA's deep space rocket, the Space Launch System, is being built by more than 1,100 companies right here on Earth. The complex parts that make up the rocket are nearing completion. In this latest installment of "No Small Steps," host Stephen Granade takes a look at the "state of the rocket" and progress being made to get to the launchpad. Critical parts, including the interim cryogenic propulsion stage and the first four, powerful engines, are complete. The massive core stage is being outfitted for Exploration Mission-1 (EM-1), the first flight of SLS and NASA's Orion spacecraft. During EM-1, SLS and Orion will demonstrate the critical capabilities needed to send humans to the Moon and beyond, on a variety of missions with increasing complexity.

(3:06)

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Chris B - NSF‏ @NASASpaceflight 1 ч. назад

ARTICLE:
NASA moves to maintain SLS Core Stage work tempo, address schedule concerns in OIG report -

https://www.nasaspaceflight.com/2018/10/nasa-maintain-sls-work-tempo-schedule-concerns-oig/ ...

- By Philip Sloss speaking to NASA on the forward plan after the OIG report.

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NASA's Exploration Ground Systems‏Подлинная учетная запись @NASAGroundSys 47 мин. назад

On Monday, we performed two successful water flow tests on the Ignition Overpressure Protection and Sound Suppression (IOP/SS) water deluge system at Pad 39B as part of our preparation for the new Space Launch System rocket.
@NASA | @NASAKennedy | @NASA_SLS | @NASA_Orion

Video (0:15)

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Launch Pad Water Deluge System Test at NASA Kennedy Space Center

NASA

Опубликовано: 19 окт. 2018 г.

This system is used to reduce extreme heat and energy generated by a rocket launch. On Oct. 15, 2018, the Ignition Overpressure Protection and Sound Suppression water deluge system at Kennedy Space Center's Launch Pad 39B was tested, sending water about 100 feet in the air. The test is part of preparation for launching our Space Launch System rocket on Exploration Mission-1 and subsequent missions.

Modifications were made to the pad after a previous wet flow test, increasing the performance of the system. During launch, this water deluge system will release approximately 450,000 gallons of water across the mobile launcher and Flame Deflector.

(1:39)

[Чебурашка]

Наш малыш

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As of August 2018, NASA has spent $11.9 billion on the SLS

Директор Насы ищет, куда собственно делись этих 12 миллиардов

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As of August 2018, NASA has spent $11.9 billion on the SLS

Директор Насы ищет, куда собственно делись эти 12 миллиардов

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Начали сборку лётной "Core stage"

https://www.nasa.gov/exploration/systems/sls/intertank-readied-for-final-assembly.html

Technicians lifted the intertank for NASA's deep space rocket, the Space Launch System (SLS), into a vertical stacking area at NASA's Michoud Assembly Facility in New Orleans. Here, engineers will join it with two other large structures to form the top half of the 212-foot-tall core stage that will be flown on Exploration Mission-1, the first flight of SLS and the Orion spacecraft. The intertank, which hold some of the avionics that help control the rocket, will be bolted to the propellant tank that will hold 196,000 pounds of liquid oxygen. Later the forward skirt, which houses the flight computers and more avionics, will be put on the very top of the stack. This operation called "the forward join" will complete the assembly of top of the core stage.

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Stennis Space Center‏Подлинная учетная запись @NASAStennis 14:32 - 14 нояб. 2018 г.

YAY! It's time for another Facebook Live event of an RS-25 Engine Test! The test is tentatively scheduled for tomorrow, Nov. 15 between 2:00-3:00 p.m. (CDT) at NASA's John C. Stennis Space Center! STAY TUNED!
#SLSFiredUp #NASASSC #NASAStennis

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Зажигание!

Chris B - NSF‏ @NASASpaceflight 14:40 - 15 нояб. 2018 г.

STATIC FIRE! RS-25 E5025 at Stennis!

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Выключение

Chris B - NSF‏ @NASASpaceflight 14:51 - 15 нояб. 2018 г.

And Shutdown! Full duration (actually seemed longer, but I ran out of fingers and toes).

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Запись трансляции теста 15.11.2018 на Мордокниге

https://scontent-arn2-1.xx.fbcdn.net/v/t42.9040-29/10000000_317072915792385_4618698815258492928_n.mp4?_nc_cat=108&efg=eyJ2ZW5jb2RlX3RhZyI6InNkIn0%3D&_nc_ht=scontent-arn2-1.xx&oh=82595e6a388cec1046a8122e0dd18314&oe=5BEE318E (20:37)

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NASA Stennis Live Stream

NASA Stennis

Трансляция началась 64 минуты назад

(20:42)

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NASA Ushers in Autumn with Powerful RS-25 Engine Test for SLS

NASA Stennis

Опубликовано: 15 нояб. 2018 г.

On Nov. 15, a team of operators at NASA's John C. Stennis Space Center in south Mississippi conducted a full-duration, 650-second RS-25 test on the A-1 Test Stand at Stennis, the sixth hot fire in an engine test series that began in mid-August. The test marked an acceptance hot fire of another RS-25 engine controller for use on a future flight of NASA's new Space Launch System (SLS) rocket. In a test for NASA's SLS, operators fired development engine No. 0525 to a 113 percent thrust level for 60 seconds during the test. The new flight controller is the central component of the modification and serves as the RS-25 "brain," helping the engine communicate with the rocket and controlling engine operation and internal health diagnostics.

(11:19)