Engine Model: XLR53AJ-1. Government Designation: XLR53-AJ-1. Designer: Aerojet. Developed in: 1949. Application: F-80. Propellants: Nitric acid/Amine. Thrust(sl): 4.410 kN (991 lbf). Country: USA. Status: Out of Production. Development begun 1949. Superperformance, wing tip mounted, regenerative cooling, pressure fed, 240 sec duration, 1000 Ibf thrust each.