FG-15
# FG-15

The FG-15 (AKA DFH-2 AKM and SpaB-170) was a Chinese spin stabilized apogee kick motor burning HTPB. It was developed by China Hexi Chemical and Machinery Corporation (also known as the 6th Academy of CASIC) for use in the Dong Fang Hong 2 satellite bus for insertion into GSO orbit.

It has a total nominal mass of 580 kg (1,280 lb), of which 505 kg (1,113 lb) is propellant load and its burn out mass is 75 kg (165 lb). It has an average thrust of 40.9 kN (9,200 lbf) with a specific impulse of 289 seconds burning for 35 seconds, with a total impulse of 1.432 MN (322,000 $lb_f).$ This motor introduced a series of innovations for the Chinese solid motor industry: first use of glass fibre wound cases, carbon/carbon nozzle throat insert material, contoured divergent nozzle, and non-destructive test of the motor grain.

The initial version had the manufacturing code FG-15 was associated to the DFH-2 bus and flew twice. The FG-15B was used by the DFH-2A bus and flew five times.

| Date | Carrier Rocket | Motor | Launch site | Mission | Result |
| - | - | - | - | - | - |
| 1984-01-29 | Long March 3 | FG-15 | Xichang Satellite Launch Center | STTW-T1 | Failure to ignite |
| 1984-04-09 | Long March 3 | FG-15 | Xichang Satellite Launch Center | STTW-T2 | Success |
| 1986-02-02 | Long March 3 | FG-15B | Xichang Satellite Launch Center | DFH-2A-T1 | Success |
| 1988-03-09 | Long March 3 | FG-15B | Xichang Satellite Launch Center | ChinaSat-1 (DFH-2A-T2) | Success |
| 1998-12-24 | Long March 3 | FG-15B | Xichang Satellite Launch Center | DFH-2A-T3 | Success |
| 1990-02-05 | Long March 3 | FG-15B | Xichang Satellite Launch Center | DFH-2A-T4 | Success |
| 1991-12-28 | Long March 3 | FG-15B | Xichang Satellite Launch Center | ChinaSat-4 (DFH-2A-T5) | Failure to ignite |
