Encyclopedia Astronautica
CZ-3A-3


Chinese space tug. 11 launches, (1994) to (2000). Upper stage / space tug - in production. Launched by CZ-3A, CZ-3B, and CZ-3C.

Gas-generator turbopump. Gimbaled engine.

Unit Cost $: 16.000 million.

AKA: H-18.
Gross mass: 21,000 kg (46,000 lb).
Unfuelled mass: 2,800 kg (6,100 lb).
Height: 12.38 m (40.60 ft).
Diameter: 3.00 m (9.80 ft).
Span: 3.00 m (9.80 ft).
Thrust: 156.00 kN (35,070 lbf).
Specific impulse: 440 s.
Number: 11 .

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Associated Countries
Associated Engines
  • YF-75 Beijing Wan Yuan lox/lh2 rocket engine. 78.5 kN. In development. Gas-generator turbopump. Gimballed engine. Isp=440s. First flight 1994. More...

See also
Associated Propellants
  • Lox/LH2 Liquid oxygen was the earliest, cheapest, safest, and eventually the preferred oxidiser for large space launchers. Its main drawback is that it is moderately cryogenic, and therefore not suitable for military uses where storage of the fuelled missile and quick launch are required. Liquid hydrogen was identified by all the leading rocket visionaries as the theoretically ideal rocket fuel. It had big drawbacks, however - it was highly cryogenic, and it had a very low density, making for large tanks. The United States mastered hydrogen technology for the highly classified Lockheed CL-400 Suntan reconnaissance aircraft in the mid-1950's. The technology was transferred to the Centaur rocket stage program, and by the mid-1960's the United States was flying the Centaur and Saturn upper stages using the fuel. It was adopted for the core of the space shuttle, and Centaur stages still fly today. More...

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