![RS-25 test on July 17, 2015](https://www.nasa.gov/wp-content/uploads/2023/03/ssc-2015-00647_0.jpg)
Pedal to the Metal – RS-25 Engine Revs Up Again
In auto racing parlance, NASA engineers put the “pedal to the metal” during a July 17 test of its Space Launch System (SLS) RS-25 rocket engine at Stennis Space Center. During a 535-second test, 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.
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https://www.nasa.gov/image-detail/pedal-metal-rs-25-engine-revs-up-again/
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