Encyclopedia Astronautica
FSW Retromotor


Fourth Academy solid rocket engine. 40.660 kN. In Production. Isp=280s. Retrorocket designed for deorbit of FSW recoverable satellite. First flight 1975.

New technologies introduced included stell/titanium alloy spherical chamber case; arc umbrell finocyl grain mandrel design; new propellant casting processes; and aft end ignition in vacuum conditions. The motor had to fire after 8 to 15 days in orbit, at spin rates of 60 rads/minute. During the lifetime of the spacecraft series several variants of the motor were developed, first using CTPB, and later HTPB propellant. The motor performed without fail 15 times on 15 flights. Total impulse 582.5 kN-s over 18.5 seconds.

Application: FSW retromotor.

Characteristics

Propellant Formulation: HTPB.

Status: In Production.
Gross mass: 266 kg (586 lb).
Unfuelled mass: 53 kg (117 lb).
Height: 0.90 m (2.94 ft).
Diameter: 0.68 m (2.23 ft).
Thrust: 40.66 kN (9,141 lbf).
Specific impulse: 280 s.
Burn time: 19 s.
First Launch: 1966-1975.
Number: 15 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • FSW Chinese military surveillance satellite. 24 launches, 1974.11.05 (FSW-0) to 2006.09.09 (SJ-8). More...

See also
Associated Manufacturers and Agencies
Associated Propellants
  • Solid Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. More...

Bibliography
  • Huang Jianding and Ye Dingyou, "The Development of Space Solid Rocket Motors in China", Acta Astronautica, Vol 40, No. 2-8, pp. 607-612, 1997..

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