Manufacturer Name: AJ23-137. Government Designation: LR91-9. Designer: Aerojet. Developed in: 1968. Application: Titan III B, C, D. Propellants: N2O4/Aerozine-50. Thrust(vac): 448.605 kN (100,850 lbf). Isp: 316 sec. Chambers: 1. Country: USA. Status: Out of Production. First Flight: 1965.
Version used in earlier versions of Titan 3 upper stages.