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Pick up to 4 vehicles to compare specs and flight records side by side. Browse all →

Specification
H-I
Mitsubishi Heavy Industries
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Vostok 8A92M
RKK Energiya
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Kosmos 11K63
Strategic Rocket Forces
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Voskhod
Soviet Space Program
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Flights993126299
Success rate100%98.9%93.7%95.7%
Thrust3,996 kN
Height42 m30.84 m31 m
Diameter2.44 m2.99 m1.6 m
Launch mass142 t282 t48 t
LEO capacity3,200 kg3,800 kg300 kg
GTO capacity1,100 kg
Launch cost
ReusableNoNoNoNo
Stages322