Author Topic: RS-25 testing at Stennis for SLS - UPDATES  (Read 49467 times)

Offline AnalogMan

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Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #40 on: 07/20/2015 09:40 AM »
Congrats to NASA on almost, but not quite, turning their rocket up to 11! Is this the expected limit that the engine can be turned up to or could they push even harder if they wanted?

During the SSME development program, Block II configuration engines were tested at 111% of Rated Power Level (RPL) - total accumulated run time from all tests at this level was around 110 minutes.
« Last Edit: 07/20/2015 09:41 AM by AnalogMan »

Offline catdlr

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Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #41 on: 08/11/2015 09:29 PM »
NASA TV to Air Test of Space Launch System Engine

NASA Television will broadcast live coverage Thursday, Aug. 13 of the penultimate hot fire test of an RS-25 engine. This is one of four engines that will power the core stage of NASA’s new Space Launch System (SLS), and carry the agency’s Orion crew capsule as part of the journey to Mars and other deep space destinations.

From 11 a.m. to 12:30 p.m. EDT, NASA TV will broadcast a series of conversations at Stennis among media, social media followers, engineers and managers discussing the SLS rocket, Orion, ground systems, and the RS-25 engine. Viewers can ask questions via social media using the hashtag #askNASA.

Coverage of the 5 p.m. engine test will begin at 4:30 p.m. The test will last 535 seconds, the amount of time the engines will fire during an actual launch. Both programs can be viewed on NASA TV-1, the public channel for the space agency, and NASA TV-2, the education channel.

The test will take place on the historic A-1 test stand at NASA’s Stennis Space Center in Mississippi and is part of a series designed to put the upgraded former space shuttle main engines through the rigorous temperature and pressure conditions they will experience during a launch.

The tests also support the development of a new controller, or “brain,” for the engine, which monitors engine status and communicates between the vehicle and the engine, relaying commands to the engine and transmitting data back to the vehicle. The controller also provides closed-loop management of the engine by regulating the thrust and fuel mixture ratio while monitoring the engine's health and status.

For NASA TV streaming video, downlink and scheduling information, visit:

http://www.nasa.gov/nasatv

For more information about NASA’s Space Launch System, visit:

http://www.nasa.gov/exploration/systems/sls/rocket.html

-end-

http://www.nasa.gov/press-release/nasa-tv-to-air-test-of-space-launch-system-engine

Photo Credit:
During a 535-second test on July 17, 2015, operators ran the RS-25 through a series of power levels, including a period of firing at 109 percent of the engine’s rated power. Data collected on performance of the engine at the various power levels will aid in adapting the former space shuttle engines to the new SLS vehicle mission requirements, including development of an all-new engine controller and software.
Credits: NASA/Stennis
Tony De La Rosa

Offline catdlr

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Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #42 on: 08/12/2015 10:54 PM »
Testing the Most Powerful Engine for NASA’s Space Launch System

Published on Aug 12, 2015
Engineers at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, talk about the current test series for the RS-25 engine on the A-1 test stand. Four RS-25 engines and twin solid rocket boosters will power NASA’s new rocket, the Space Launch System, on deep space missions, including to an asteroid and ultimately to Mars. The RS-25, previously used on the space shuttle, is being modified for SLS specifications, including a higher thrust level and new engine controller unit.

Tony De La Rosa

Offline Chris Bergin

Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #43 on: 08/13/2015 12:58 AM »
Philip Sloss is at Stennis for Thursday's test and interviewed RS-25 managers to create this feature:
http://www.nasaspaceflight.com/2015/08/sls-test-stennis-team-overview-rs25-ignition/

Will give it a standalone as it's lots of interesting quotes.

Offline John44

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Online Calphor

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Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #45 on: 08/13/2015 06:16 PM »
Waiting to see the RS-25 test today. Looking forward to seeing the test.

Offline Chris Bergin

Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #46 on: 08/13/2015 08:32 PM »
Live!

Wow, I love their accents!

Offline Chris Bergin

Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #47 on: 08/13/2015 08:37 PM »
This has turned into one of those NASA Edge shows. Will wait for some actual updates - i.e the static fire.

Offline Chris Bergin

Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #48 on: 08/13/2015 08:40 PM »
"We're creating the core with..." Todd May.

"That's aweeeesome" - NASA Edge.

"....friction stir welding" - Todd May.

"I'm sold"  - NASA Edge.

Offline SoulWager

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Offline Chris Bergin

Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #56 on: 08/13/2015 09:02 PM »
Ignition!

Offline Chris Bergin

Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #57 on: 08/13/2015 09:03 PM »

Offline Chris Bergin

Re: RS-25 testing at Stennis for SLS - UPDATES
« Reply #58 on: 08/13/2015 09:03 PM »


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