Aerojet

Aerojet is an American aerospace and defense propulsion brand associated with rocket propulsion and propulsion systems. Its work has historically supported military missiles, launch vehicles, satellites, and other space systems. Rather than selling consumer products or complete aircraft, the business has primarily supplied solid rocket motors, liquid propulsion systems, attitude-control equipment, and related components to governments, armed forces, aerospace prime contractors, and space-system operators. The Aerojet name dates to the expansion of the U.S. aerospace industry during the Second World War and later became established in missile, launch, and space programs. Following a series of corporate reorganizations, Aerojet was combined with Rocketdyne to form Aerojet Rocketdyne. In 2023, Aerojet Rocketdyne was acquired by L3Harris Technologies, bringing the propulsion business into L3Harris's aerospace and defense portfolio. Because “Aerojet” can refer to the historical company, the Aerojet Rocketdyne business, or the continuing brand, this entry treats it as a U.S. aerospace propulsion brand; the exact current legal entity and brand scope require further verification.

Aerojet originated in the U.S. aerospace and rocket-technology industry during the Second World War. As American missile, launch, and space-exploration programs expanded, Aerojet developed a core position in rocket engines and propulsion systems and became a recognized name in the U.S. defense and space supply chain. Its products and technologies primarily served government programs, military missiles, launch vehicles, satellites, and other space systems. Aerojet later underwent several corporate reorganizations and was combined with the relevant Rocketdyne business to create Aerojet Rocketdyne. The combination brought together Aerojet's heritage in solid propulsion and Rocketdyne's long-standing capabilities in liquid rocket engines. In 2023, L3Harris Technologies completed its acquisition of Aerojet Rocketdyne, making the associated propulsion capabilities part of L3Harris's aerospace and defense portfolio. Because public references to “Aerojet” may describe the historical company, Aerojet Rocketdyne, or the continuing business, the precise boundaries of the current brand and legal entity require additional verification.

1. 2023
2. 1942

• Solid rocket motors

  Aerojet has long supplied solid rocket motors and propulsion components for military missiles, interceptor systems, launch vehicles, and other space missions.

• Liquid propulsion systems

  Liquid propulsion activities serve spacecraft, launch vehicles, and defense systems through specialized engines or propulsion components supplied as part of larger aerospace programs.

• Missile propulsion systems

  This product line provides propulsion-related components and motors for military missiles and interceptor systems, representing a core defense application of the Aerojet business.