Aerojet Rocketdyne RS-25 Test Advances Exploration Efforts
STENNIS SPACE CENTER, Miss.,
The 365-second test at NASA's
Also on the test engine was an additively manufactured component designed to dampen engine vibrations that could create stability issues during flight. The pogo accumulator assembly, the engine's largest additively manufactured component to date, has now performed successfully on two successive RS-25 hot-fire tests. The first test was on
"Aerojet Rocketdyne is playing a vital role in the nation's effort to expand the frontiers of humankind," said
Additive manufacturing is a key element of Aerojet Rocketdyne's plan to reduce the manufacturing costs of future versions of the RS-25 by 30 percent. The RS-25 engine is based on the Space Shuttle Main Engine that powered NASA's space shuttles into orbit. Future versions will incorporate design simplifications and modern manufacturing processes such as additive manufacturing for affordability and sustainability.
The RS-25 program has 16 engines left in its inventory from the space shuttle program that are currently being repurposed for SLS, which will make its debut in 2019 carrying an uncrewed version of NASA's Orion spacecraft.
These legacy engines are being upgraded and modernized for the first four flights of the SLS. Thrust is being increased from 491,000 pounds on space shuttle missions to 512,000 pounds for SLS. The new controller - essentially the brain of the engine - weighs less and has far more processing power than previous versions, making the engine more responsive to vehicle commands.
"We ended 2017 with a successful engine test in
December and have now maintained that momentum into 2018," said
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