This page no longer updated from 31 October 2001. Latest version can be found at D-1

Designer: Kosberg. Developed in: 1955-56. Propellants: Isopropylnitrate Thrust(vac): 3,977 kgf. Thrust(vac): 39.00 kN. Isp (sea level): 210 sec. Chambers: 1. Chamber Pressure: 35.30 bar. Country: Russia. Status: Developed 1955-56. References: 309 . Comments: Second thrust level at 50%. Explosion of D-1 on test bench in 1956 forced stop of work with mono-propellant OT-152. Sea level thrust 39 kN.
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Last update 12 March 2001.
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© Mark Wade, 2001 .