Engine Model: 40ALD-3000. Manufacturer Name: 40ALD-3000. Government Designation: XLR5-AJ-1. Designer: Aerojet. Developed in: October 1943. Application: B-29 droppable ATO. Propellants: Nitric acid/Amine. Thrust(sl): 13.330 kN (2,997 lbf). Burn time: 40 sec. Mass Engine: 450 kg (990 lb). Diameter: 0.81 m (2.65 ft). Length: 3.20 m (10.40 ft). Chambers: 1. Chamber Pressure: 20.00 bar. Country: USA. First Flight: 1945. Development begun October 1943. Droppable version, pressure fed, regeneratively cooled, supplied with 331 kg of propellant.