Engine Model: 300LR-200. Manufacturer Name: 300LR-200. Government Designation: XCAL-200. Designer: Aerojet. Developed in: January 1943. Application: XP-79 Northrop Flying Wing. Propellants: Nitric acid/Amine. Thrust(sl): 882 N (198 lbf). Country: USA. First Flight: 1945. Development begun January 1943. Planned successor to XCALT-6000, developed under 'Project X' for the Northrop XP-79 Flying Wing rocket fighter. Two different engines were developed. Low thrust, proof of principle First US rocket powered aircraft flight. Also called XCAL-200
300LR-200 used on Spacecraft