Rocketdyne
The Rocketdyne Division was founded by North American Aviation (NAA) in 1955, and was later part of Rockwell International (1967-1996) and Boeing (1996-2005). In 2005, the Rocketdyne Division was sold to United Technologies Corporation, becoming Pratt & Whitney Rocketdyne as part of Pratt & Whitney. In 2013, Pratt & Whitney Rocketdyne was sold to GenCorp, which merged it with Aerojet to form Aerojet Rocketdyne.
Aerojet Rocketdyne Holdings
Aerojet Rocketdyne Holdings, Inc., formerly GenCorp, Inc., is an American technology-based manufacturer based in El Segundo, California. Established in 1915, it was formerly known as the General Tire and Rubber Company, becoming GenCorp in 1984, and adopting its current name in April 2015.