NASAのインスタグラム(nasa) - 8月14日 07時24分

At 5 p.m. EDT an RS-25 engine roared to life during a 535-second test in which it reached 109% power and burned 150,000 gallons of liquid oxygen and 60,000 gallons of liquid hydrogen. The RS-25 developmental engine reached temperatures of 6,000 degrees Fahrenheit during the firing on the historic A-1 test stand at NASA’s Stennis Space Center in Mississippi.
Operators are conducting the test series to qualify an all-new engine controller and put the upgraded former space shuttle main engines through the rigorous temperature and pressure conditions they will experience during a SLS mission. One final test of this RS-25 developmental engine is planned in this series; testing of flight engines begins later this fall.
SLS will launch astronauts in the Orion spacecraft on missions to deep space and eventually on the journey to Mars. An initial 70-metric-ton (77-ton) SLS configuration will use four RS-25 engines for the core stage, along with two five-segment solid rocket boosters, providing more lift to orbit than any current launch vehicle.
Video credit: NASA
#nasa #journeytomars #rs-25 #sls #spacelaunchsystem #mars #space

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