Aerojet Rocketdyne

Aerojet Rocketdyne was a company, and later a subsidiary of American defense company L3Harris, that manufactured rocket, hypersonic, and electric propulsive systems for space, defense, civil and commercial applications. Aerojet traced its origins to the General Tire and Rubber Company established in 1915, while Rocketdyne was created as a division of North American Aviation in 1955. Aerojet Rocketdyne was formed in 2013 when Aerojet and Pratt & Whitney Rocketdyne were merged, following the latter's acquisition by GenCorp, Inc. from Pratt & Whitney. Aerojet Rocketdyne was acquired by L3Harris in July 2023 for $4.7 billion. In 2026, L3Harris agreed to sell the "Space Propulsion and Power Systems" sector of Aerojet Rocketdyne to AE Industrial Partners, who will spin off the business under the name "Rocketdyne", and to hold an IPO for the remaining "Missile Systems" sector.