Aerojet Rocketdyne Holdings, Inc., formerly GenCorp, Inc., is an American technology-based manufacturer based in Rancho Cordova, 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. Several decades after it began manufacturing rubber products, General Tire diversified into broadcasting and aeronautics. In the 1940s, the Aerojet company began experimenting with various rocket designs. For a solid-fuel rocket, they needed binders, and turned to General Rubber for assistance. General became a partner in the company.