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  • AR1 is designed by the company that has been involved in more than 2,100 successful launches, including every astronaut launched from U. S. soil.
  • The AR1 employs advanced, highly-efficient oxygen-rich staged combustion engine technology that Aerojet Rocketdyne has continuously evolved for more than 20 years.
  • Rapid development and certification of the AR1 is underway at the company’s premiere propulsion and innovation centers with delivery of a flight-qualified engine ready for launch in 2019. This results in a low-risk transition to affordable production using a known supplier base and a proven and skilled workforce.
  • The AR1’s flexible, modular design allows the engine to be configured to support multiple launch vehicles, providing a U.S.-designed and manufactured propulsion system for the nation's most reliable launch vehicle that can be easily adapted to power other current and future government and commercial launch vehicles.
Capitalizing on decades of engine experience, AR1 uses the latest technology, materials, world-leading additive manufacturing and rocket engine manufacturing capabilities.
RS-25 Engine

RS-25

Booster engine for NASA’s Space Launch System

RL10 Engine

RL10

Upper stage engine

RS-68A

RS-68A

Booster engine

RS-27A

RS-27A

Booster engine

J-2X

J-2X

NASA’s most recent engine development program