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OMV Variable Thrust Engine

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Status: In Production. Thrust: 578 N (129 lbf). Unfuelled mass: 6.80 kg (14.90 lb). Burn time: 2,800 s. Height: 0.70 m (2.30 ft). Diameter: 2.71 m (8.90 ft).

Dry Mass: 6.8 kg. Length: 70.05 cm. Maximum Diameter: 27.13 cm. Mounting: fixed. Engine Cycle: pressure fed. Oxidizer: di-nitrogen tetroxide at 0.119 kg/sec during maximum Thrust: . Fuel: MMH at 0.0745 kg/sec during maximum Thrust. O/F Ratio 1.64. Thrust: 57.8-578 N in vacuum, with a throttle range ratio of 10:1. Isp: 280-308 sec in vacuum. Expansion Ratio: 125:1. Cooling Method: radiative cooling. Chamber Pressure: 0.75-6.8 atm. Ignition: hypergolic. Burn Time: 28 hours total with a 2800 sec maximum single burn.

Engine: 6.80 kg (14.90 lb). Chamber Pressure: 6.90 bar. Area Ratio: 125. Thrust to Weight Ratio: 8.52.