SLS - space launch system (3-я попытка)

[tnt22]

Chris B - NSF‏ @NASASpaceflight 16 мин. назад

POWER

[tnt22]

[tnt22]

[tnt22]

Выключение!

[tnt22]

Chris B - NSF‏ @NASASpaceflight 20 мин. назад

RS-25 test complete. Appears to be the full duration firing this time. Four of these bad boys - all Shuttle veterans - will help push SLS uphill in 2020.

[tnt22]

[tnt22]

Chris B - NSF‏ @NASASpaceflight 4 мин. назад

RS-25 test 2 of 9 in the Retrofit 1b series, testing the first new "hot-isostatic press" (HIP) bonded main combustion chamber (MCC), a "3-D printed" pogo accumulator assembly, and a new insulation system for the high-pressure fuel turbopump (HPFTP).

https://www.nasaspaceflight.com/2018/09/next-rs-25-gordon-test-thursday/ ...

Спойлер

[свернуть]

[tnt22]

Запись трансляции теста RS-25 на Мордокниге

https://scontent-arn2-1.xx.fbcdn.net/v/t42.9040-29/10000000_322949725179132_3700422459342716928_n.mp4?_nc_cat=0&efg=eyJ2ZW5jb2RlX3RhZyI6InNkIn0%3D&oh=b5498d816e1a12d75cc1ba4037953624&oe=5B91B9EB (19:23)

[tnt22]

NASA Stennis Live Stream

NASA Stennis

Трансляция началась 2 часа назад

(19:27)

[tnt22]

NASA Marches On with Test of RS-25 Engine Flight Controller

NASA Stennis

Опубликовано: 6 сент. 2018 г.
9 минут назад

On September 6, Stennis Space Center conducted the second in another series of RS-25 rocket engine hot fire tests for NASA's Space Launch System (SLS) Program. The test represented a certification hot fire of an RS-25 flight controller, the "brain" of the engine, which will be used on a future flight of the SLS rocket. The test also marked a sixth test of a 3D-printed pogo accumulator assembly, a critical component that dampens potential engine propellant pressure oscillations that can cause a rocket to become unstable in flight.

(9:56)

[tnt22]

Stephen Clark‏ @StephenClark1 4 ч. назад

The SLS mobile launch platform sits outside the Vehicle Assembly Building this morning, ready to go into the high bay for the first time.

[tnt22]

Stephen Clark‏ @StephenClark1 2 ч. назад

From the 16th floor of the VAB, the mobile launch platform for NASA's Space Launch System makes its glacial move into High Bay 3 for seven months of verification and validation testing.

[tnt22]

The Aerospace Geek‏ @ThAerospaceGeek

The ML will remain in the VAB for 7 months for testing, then move to the pad for 4 months of testing, then roll back into the VAB to be stacked with EM-1, then roll to the pad for wet dress, then return to the VAB, and to the pad for launch a month later.

8:56 - 8 сент. 2018 г.

[tnt22]

https://www.nasa.gov/exploration/systems/sls/smart-manufacturing-updates-tests-engine-part-to-reduce-costs

Sept. 10, 2018

NASA 'Smart Manufacturing' Updates, Tests Engine Part To Reduce Costs


This test series is verifying that the improved components, such as the main combustion chamber tested for the second time on Sept. 6, 2018, perform safely and reliably. These components can be made in less time and for less money with new smart manufacturing processes.
Credits: Aerojet Rocketdyne photo
View Image Feature

NASA redesigned and tested a key component for the RS-25 engine that powers the agency's new deep space rocket, the Space Launch System (SLS), by incorporating modern manufacturing techniques that significantly reduce both cost and fabrication time.

The redesigned main combustion chamber, which is the heart of the engine, has performed well during two tests in flight-like conditions. During the tests, temperatures reached 6,000 degrees Fahrenheit, and the part experienced 3,000 pounds of pressure as the engine fired up in a test stand at NASA's Stennis Space Center in Bay St. Louis, Mississippi. When SLS launches, four RS-25 engines will produce two million pounds of thrust to help send SLS to space for missions to the Moon and beyond.

Спойлер

"We're testing propulsion parts like the main combustion chamber, one of the most complex and critical components for engine operations, to show it can be made less expensively without sacrificing reliability, safety or performance," said Steve Wofford, SLS liquid engines manager. "The SLS rocket will be the most powerful rocket in the world, and these tests show engines can be made with modern manufacturing techniques and still provide the power to safely send astronauts to the Moon."


NASA is taking advantage of RS-25 engine tests, such as the Sept. 6 test shown here, to not only test flight components for early Space Launch System flights but also to test components made a whole new way with modern manufacturing techniques. If test results are satisfactory, these components can be incorporated in engines made for later SLS missions. The SLS program has been testing the RS-25 engines since 2015 at NASA's Stennis Space Center in Bay St. Louis, Mississippi, with more than 20 tests and more than 10,000 seconds worth of hot fire time.
Credits: NASA
View Image feature

Inside the chamber, the fuel and oxidizer combust and flow through the nozzle, to turn the high-pressure combustion into the 500,000 pounds of thrust that each engine produces. The new chamber design reduces the complexity of the part by eliminating 29 welds. The chamber is made in less time for less money with a bonding technique called Hot Isostatic Pressure -- or HIP -- bonding. The chamber's internal metal liner and external jacket are bonded together under very high pressures and temperatures.

"The innovative bonding process has reduced the chamber cost and build time by around 50 percent each." said Mike Shadoan, the SLS combustion devices manager for liquid engines. "This series of nine tests allows us to test flight controllers for early missions and at the same time expose parts made with innovative techniques to the same conditions they will see during launch and flight."

The RS-25 was proven during the Space Shuttle Program and has been upd ated with new controllers and nozzle insulation for its job with SLS. Currently, the SLS Program has 16 engines in its inventory from the Space Shuttle Program, enough for four flights. Engines for later flights are being built by the SLS core stage engine prime contractor, Aerojet Rocketdyne, at its factory in Canoga Park, California. NASA and Aerojet engineers are working to smartly incorporate today's modern manufacturing techniques not just in the chamber, but also on key components across the entire engine, leading to a host of benefits in cost, schedule and reduced complexity.

"Engine hot fire testing is the ultimate demonstration that new component designs and incorporation of modern manufacturing technologies are paying off big-time for the program," said Dan Adamski, RS-25 program director for Aerojet Rocketdyne. "Continued testing will integrate additional upgraded components into the engine design culminating with final certification testing in 2021."

During six tests, technicians and engineers tested the first 3D printed part on an RS-25 engine, the pogo accumulator. Aerojet Rocketdyne is under contract to manufacture an initial se t of six new engines for future SLS missions. These new engines will be fabricated using the components and techniques that are being validated on development engines during engine tests at Stennis.

NASA is leading a return to the Moon through an innovative and sustainable program of exploration to expand human presence into the solar system. Beginning with Exploration Mission-1, SLS and Orion will demonstrate the critical backbone capabilities that will carry humans to the Moon and farther into space than ever before on a variety of missions with increasing complexity. SLS's unprecedented power and volume will also carry the large pieces of hardware needed to build the Gateway and other long-term infrastructure at the Moon and, later, for human missions to Mars.

[свернуть]

Last Updated: Sept. 10, 2018
Editor: Jennifer Harbaugh

[tnt22]

ML Moves Toward Exploration Mission1 Roll In Timelapse

NASAKennedy

Опубликовано: 13 сент. 2018 г.

The mobile launcher modified for NASA's new Space Launch System rocket moves into Kennedy Space Center's Vehicle Assembly Building in the early morning of Sept. 8, 2018.

(1:20)

[tnt22]

Rocket Science in 60 Seconds: A Look Inside the SLS Support Center

NASA's Marshall Space Flight Center

Опубликовано: 14 сент. 2018 г.

Rocket Science in 60 Seconds gives you an inside look at work being done at NASA to explore deep space. In this episode, Jennifer Vollmer takes you inside the Space Launch System Engineering Support Center located in the Huntsville Operations Support Center at NASA's Marshall Space Flight Center in Huntsville, Alabama.

(0:59)

[tnt22]

NASA's Exploration Ground Systems‏Подлинная учетная запись @NASAGroundSys 31 мин. назад

New photos of the mobile launcher positioned inside High Bay 3 of the Vehicle Assembly Building.

Спойлер

[свернуть]

[tnt22]

НАСА запланировала прямую трансляцию очередного огневого испытания RS-25

https://www.nasa.gov/multimedia/nasatv/schedule.html

NASA Television Upcoming Events
Watch NASA TV

All times Eastern

SEPTEMBER

September 25, Tuesday
3 p.m. – RS-25 Engine Test from Stennis Space Center

19:00 (UTC) 25.09.2018, 22:00 (ДМВ) 25.09.2018

[tnt22]

NASA's John C. Stennis Space Center
1 мин. · 

The Facebook Live event of an RS-25 Engine Test is tentatively scheduled for 3:20 p.m. (CDT) at NASA's John C. Stennis Space Center! STAY TUNED!
#SLSFiredUp #NASASSC #NASAStennis#NASA60th

[tnt22]

NASA_SLS‏Подлинная учетная запись @NASA_SLS 8 мин. назад

Louisiana workers at #NASAMichoud recently practiced moving the core stage pathfinder, a full-scale simulator similar in size, shape and weight to the massive #NASASLS core stage.

MORE about the pathfinder >> https://go.nasa.gov/2vtiVfm