YaKhR-2 Strap-on

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YaKhR-2 Strap-on

Part of R-7 Block A stage series

LOx/Kerosene propellant rocket stage. R-7 strap-ons increased in size dimensionally 50%, equipped with 6 engines from R-9. Boost nuclear thermal core stage to altitude before ignition of nuclear engine. Masses calculated based on vehicle total weight and performance.

Status: Development ended 1949. Thrust: 2,393.72 kN (538,131 lbf). Gross mass: 110,000 kg (240,000 lb). Unfuelled mass: 8,250 kg (18,180 lb). Specific impulse: 311 s. Specific impulse sea level: 269 s. Burn time: 125 s. Height: 27.00 m (88.00 ft). Diameter: 3.33 m (10.92 ft). Span: 3.33 m (10.92 ft).

No Engines: 6.

Country: Russia. Engines: RD-111. Launch Vehicles: YaKhR-2. Propellants: Lox/Kerosene.

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