Encyclopedia Astronautica
N1 Block D


Russian space tug. 4 launches, 1969 to 1972. Upper stage / space tug - out of production. Block D adapted as lunar crasher stage

The Block D stage for the N1 was developed from the Soyuz B.

Gross mass: 18,200 kg (40,100 lb).
Unfuelled mass: 3,500 kg (7,700 lb).
Height: 5.70 m (18.70 ft).
Diameter: 2.90 m (9.50 ft).
Span: 2.90 m (9.50 ft).
Thrust: 83.30 kN (18,727 lbf).
Specific impulse: 349 s.
Number: 4 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • L3 Russian manned lunar expedition. Development begun in 1964. All hardware was test flown, but program cancelled in 1974 due to repeated failures of the project's N1 launch vehicle. More...

See also
Associated Propellants
  • Lox/Kerosene 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. In January 1953 Rocketdyne commenced the REAP program to develop a number of improvements to the engines being developed for the Navaho and Atlas missiles. Among these was development of a special grade of kerosene suitable for rocket engines. Prior to that any number of rocket propellants derived from petroleum had been used. Goddard had begun with gasoline, and there were experimental engines powered by kerosene, diesel oil, paint thinner, or jet fuel kerosene JP-4 or JP-5. The wide variance in physical properties among fuels of the same class led to the identification of narrow-range petroleum fractions, embodied in 1954 in the standard US kerosene rocket fuel RP-1, covered by Military Specification MIL-R-25576. In Russia, similar specifications were developed for kerosene under the specifications T-1 and RG-1. The Russians also developed a compound of unknown formulation in the 1980's known as 'Sintin', or synthetic kerosene. More...

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