How many RS-25 engines are there?

A total of 46 reusable RS-25 engines, each costing around US$40 million, were flown during the Space Shuttle program, with each new or overhauled engine entering the flight inventory requiring flight qualification on one of the test stands at Stennis Space Center prior to flight.

What type of engine is the RS-25?

staged-combustion engine
The RS-25 is a staged-combustion engine cycle powered by liquid hydrogen and liquid oxygen, making it one of highest performing engines the nation has ever produced. The SSME engines on the Shuttle typically operated at 491,000 pounds vacuum thrust (104.5-percent of rated power level).

What kind of engine is the Rs 25?

The RS-25 is a staged-combustion engine cycle powered by liquid hydrogen and liquid oxygen, making it one of highest performing engines the nation has ever produced. The SSME engines on the Shuttle typically operated at 491,000 pounds vacuum thrust (104.5-percent of rated power level).

Where was the RS-25 Space Shuttle engine tested?

RS-25 testing at Marshall Space Flight Center A modified RS-25 Space Shuttle Main Engine is test-fired at NASA’s Marshall Space Flight Center in 1993, at the center’s Technology Test Bed, a former Saturn V test stand. Over the years, RS-25 test-firings have occurred at Marshall, Stennis, and on the launch pad at Kennedy Space Center.

What was the reliability of the RS-25 rocket?

In 1985, a sensor malfunction caused an RS-25 on Challenger to shut down early. Challenger still made it to space and completed its mission. Counting that one failure, the RS-25 has a reliability rating of 99.7 percent. What about performance? NASA has called the RS-25 “the Ferrari of rocket engines.”

What was the purpose of the RS-25 Restart program?

The RS-25 Production Restart Program focused on enabling the restart of manufacturing and production of RS-25 engines with emphasis on improving RS-25 system affordability and sustainability in order to provide extended service toward SLS mission needs.