This page no longer updated from 31 October 2001. Latest version can be found at 4D10

Government Designation: 4D10. Designer: Isayev. Application: R-27 / RSM-25 (SS-N-6). Propellants: N2O4/UDMH Thrust(vac): 26,000 kgf. Thrust(vac): 255.00 kN. Chambers: 1 + 4. Country: Russia. Status: Out of Production. References: 319 , 340 , 342 . Comments: First engine system to be submerged in propellant tank. One main engine chamber plus unknown number (probably 4) of steering thrusters. Thrust 226 + 29 kN.
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Last update 12 March 2001.
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© Mark Wade, 2001 .