Summary
The FG-15 (AKA DFH-2 AKM and SpaB-170) was a Chinese spin stabilized apogee kick motor burning HTPB.[3] 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.[4]
| Country of origin | China |
|---|---|
| First flight | 1986-02-02 |
| Designer | China Hexi Chemical and Machinery Corporation |
| Application | Apogee kick motor |
| Associated LV | Long March 3 |
| Predecessor | FG-02 |
| Successor | FG-36 |
| Status | Out of Production |
| Solid-fuel motor | |
| Propellant | HTPB |
| Casing | Fiberglass |
| Configuration | |
| Chamber | 1 |
| Performance | |
| Thrust, vacuum | 40.9 kN (9,200 lbf) |
| Specific impulse, vacuum | 289 s (2.83 km/s) |
| Total impulse | 1.432 MN (322,000 lbf) |
| Burn time | 35s |
| Propellant capacity | 505 kg (1,113 lb) |
| Dimensions | |
| Length | 1,489 mm (58.6 in) |
| Diameter | 896 mm (35.3 in) |
| Dry weight | 75 kg (165 lb) |
| Used in | |
| Dong Fang Hong 2 | |
| References | |
| References | [1][2][3] |
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 lbf). 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 |
See also edit
- China Hexi Chemical and Machinery Corporation
- Dong Fang Hong 2
- Long March 3
References edit
- ^ "DFH-2 AKM". Encyclopedia Astronautica. Archived from the original on 2014-02-09. Retrieved 2015-07-25.
- ^ McDowell, Jonathan. "5.6.38: Shanxi AKM". Jonathan Space Report. Retrieved 2015-07-25.
- ^ a b Norbert Bgügge. "Some Chinese solid fuel aerospace motors". B14643.DE. Archived from the original on 2015-09-26. Retrieved 2015-07-25.
- ^ Harvey, Brian (2013). "Rocket Engines". China's Space Program — The Great Leap Forward. Springer Science & Business Media. p. 97. ISBN 978-1461450436. Retrieved 2015-07-25.