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AR1 is the lowest risk, lowest cost to the taxpayer and fastest path to eliminating our dependence on Russian-built rocket engines for U.S. National Security space launches.

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Lowest Risk

Aerojet Rocketdyne is the only company in the U.S. that has ever developed and flown large booster engines.

Lowest Cost

AR1 requires minimal changes to infrastructure, launch operations and production facilities for the nation's most reliable launch vehicle. This adaptability offers the lowest cost to taxpayers.

Fastest Path

Rapid development and certification of the AR1 will take place at existing manufacturing and test facilities with delivery of a flight-qualified engine by 2019.