Aerojet Rocketdyne AR1 and United Launch Services Vulcan BE-4 in Competion to Provide US Launch Capability
The Air Force is continuing its push to find a domestic replacement for a Russian-made rocket engine for its satellite launches, awarding two new contracts for an alternative engine. The service has awarded Aerojet Rocketdyne a $115.3 million contract for development of the company”s booster-stage AR1 rocket propulsion system prototype and United Launch Services a