Status: In development. Payload: 6,000 kg (13,200 lb). Gross mass: 550,000 kg (1,210,000 lb). Span: 117.00 m (383.00 ft).
The custom-built catamaran carrier air vehicle, designed by Burt Rutan, has a takeoff mass of 550,000 kg, a 117 m wingspan, and is powered by six 747-class turbofan engines. It can carrier the launch vehicle over a radius of 2400 km before dropping it for launch at an altitude of 9100 m, or ferry the empty vehicle or cargo over a maximum range of 17,000 km. It requires a 3700-m long runway for takeoff. The 220,000 kg, 37-m long SpaceX two-stage launch vehicle is a modification of the Falcon 9 with aft-mounted aerodynamic surfaces.