N-II
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N-II (rocket)
 The N-II rocket |
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| Function | Carrier rocket |
|---|---|
| Manufacturer | Mitsubishi Heavy Industries |
| Country of origin |  United States (design) Japan (production) |
| Size | |
| Height | 35 metres (115 ft) |
| Diameter | 2.44 metres (8.0 ft) |
| Mass | 132,690 kilograms (292,500 lb) |
| Stages | 2 or 3 |
| Capacity | |
| Payload to LEO |
2,000 kilograms (4,400 lb) |
| Payload to GTO |
730 kilograms (1,600 lb) |
| Associated rockets | |
| Family | Delta |
| Launch history | |
| Status | Retired |
| Launch sites | LA-N, Tanegashima |
| Total launches | 8 |
| Successes | 8 |
| Maiden flight | 11 February 1981 |
| Last flight | 19 February 1987 |
| Boosters (Stage 0) - Castor 2 | |
| No boosters | 9 |
| Engines | 1 TX-354-3 |
| Thrust | 258.9 kilonewtons (58,200 lbf) |
| Specific impulse | 262 sec |
| Burn time | 37 seconds |
| Fuel | Solid |
| First Stage - Thor-ELT | |
| Engines | 1 MB-3-3 |
| Thrust | 866.7 kilonewtons (194,800 lbf) |
| Specific impulse | 290 sec |
| Burn time | 270 seconds |
| Fuel | RP-1/LOX |
| Second Stage - Delta-F | |
| Engines | 1 AJ-10-118F |
| Thrust | 41.3 kilonewtons (9,300 lbf) |
| Specific impulse | 280 sec |
| Burn time | 335 seconds |
| Fuel | HNO3/UDMH |
| Third Stage (optional) - Star-37E | |
| Engines | 1 solid |
| Thrust | 68 kilonewtons (15,000 lbf) |
| Specific impulse | 284 sec |
| Burn time | 42 seconds |
| Fuel | Solid |
| Third Stage (alternative, optional) - Burner-2 | |
| Engines | 1 solid |
| Thrust | 43.6 kilonewtons (9,800 lbf) |
| Specific impulse | 285 sec |
| Burn time | 42 seconds |
| Fuel | Solid |
The N-II or N-2 was a derivative of the American Delta rocket, produced under licence in Japan. It used a Thor-ELT first stage, a Delta-F second stage, nine Castor SRMs, and on most flights either a Star-37E or Burner-2 upper stage, identical to the US Delta 0100 series configurations. Eight were launched between 1981 and 1987, before it was replaced by the H-I, which featured Japanese-produced upper stages. All eight launches were successful.
Launch history
| Date/Time (GMT) | S/N | Payload | Orbit | Remarks |
|---|---|---|---|---|
| 11 February 1981, 08:30 | 7(F) | ETS-4 (Kiku-3) | MEO | |
| 10 August 1981, 20:03 | 8(F) | GMS-2 (Himawari-2) | GTO | |
| 4 February 1983, 08:37 | 10(F) | CS-2A (Sakura-2A) | GTO | |
| 5 August 1983, 20:29 | 11(F) | CS-2B (Sakura-2B) | GTO | |
| 23 January 1984, 07:58 | 12(F) | BS-2A (Yuri-2A) | GTO | |
| 2 August 1984, 20:30 | 13(F) | GMS-3 (Himawari-3) | GTO | |
| 12 February 1986, 07:55 | 14(F) | BS-2B (Yuri-2B) | GTO | |
| 19 February 1987, 01:23 | 16(F) | MOS-1 (Momo-1) | LEO |
 |
This rocketry article is a stub. You can help Wikipedia by expanding it. |
See also
References
- Wade, Mark. "Delta". Encyclopedia Astronautica. http://www.astronautix.com/lvs/delta.htm. Retrieved 2008-08-31.
- McDowell, Jonathan. "Thor". Orbital and Suborbital Launch Database. Jonathan's Space Report. http://planet4589.org/space/lvdb/launch/Thor. Retrieved 2008-08-31.
- Krebs, Gunter. "N-2". Gunter's Space Page. http://space.skyrocket.de/doc_lau_det/n-2.htm. Retrieved 2008-08-31.
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