DFH-2 AKM

Fourth Academy solid rocket engine. DFH series apogee kick motor. Out of Production. First flight 1984. First use in China of glass fiber wound cases, carbon/carbon nozzle throat insert material, contoured divergent nozzle.

Motors developed for geosynchronous orbit insertion of DFH series satellites. These motors marked the first use in China of glass fiber wound cases, carbon/carbon nozzle throat insert material, contoured divergent nozzle, and non-destructive test of the motor grain. First used in DFH-2 satellite in 1984, followed by the DFH-2A. Impulse accuracy (3-sigma) of 0.7%. Total impulse of 1432 kN-s over 40 seconds. Nozzle diameter 556.8 mm. The motor did not fire in 2 of 7 launches, although the precise cause is not known.

Propellant Formulation: HTPB.