|
Lockheed Martin Astronautics |
Atlas II | Atlas IIA | Atlas IIA | Atlas IIAS | Atlas IIAS | |||||||
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Overall |
Operational | from | 07.12.1991 | 31.07.1995 | 10.06.1992 | 04.09.1997 | 10.01.1995 | |||||
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to | 16.03.1998 | 20.10.2000 | 21.11.1996 | 18.12.1999 | 31.08.2004 | ||||||
| Orbital flights | 10 | 8 | 6 | 2 | 24 | |||||||
| Payload weight | t | GTO | 2.68 | GTO | 3.066 | GTO | 3.15 | GTO | 3.719 | GTO | 3.8 | |
| Gross liftoff weight | t | 189.59 | 189.98 | 190.1 | 237.32 | 237.4 | ||||||
| Gross propellant weight | t | 173.19 | 173.19 | 173.19 | 213.59 | 213.59 | ||||||
| Total length | m | 48.06 | 48.06 | 48.06 | 48.98 | 48.98 | ||||||
| Max. diameter (span) | m | 4.88 | 4.88 | 4.88 | 4.88 | 4.88 | ||||||
| Total liftoff thrust (s.l.) | kN | 2,175 | 2,175 | 2,175 | 3,079 | 3,079 | ||||||
| Total impulse (vac) | MN*s | 534.6 | 534.9 | 535.6 | 641.0 | 641.7 | ||||||
|
Fairing |
Total length | m | 10.38/12.01 | 12.01/12.93 | 12.01/12.93 | 12.01/12.93 | 12.01/12.93 | |||||
| Diameter | m | 3.30/4.20 | 4.20 | 4.20 | 4.20 | 4.20 | ||||||
| Total weight | t | 1.410/2.085 | 2.085/2.255 | 2.085/2.255 | 2.085/2.255 | 2.085/2.255 | ||||||
| Stage 2 |
Name |
Centaur D-2 | Centaur D-2A | Centaur D-2AN | Centaur D-2A1 | Centaur D-2A1N | ||||||
| Length | m | 10.01 | 10.01 | 10.01 | 10.01 | 10.01 | ||||||
| Diameter | m | 3.05 | 3.05 | 3.05 | 3.05 | 3.05 | ||||||
| Liftoff weight | t | 19.68 | 19.68 | 19.68 | 19.68 | 19.68 | ||||||
| Propellant weight | t | 16.93 | 16.93 | 16.93 | 16.93 | 16.93 | ||||||
| Engines (Chambers) | RL-10A-3-3A (2) | RL-10A-4 (2) | RL-10A-4N (2) | RL-10A-4-1 (2) | RL-10A-4-1N (2) | |||||||
| Propellant | LH2/LOX | LH2/LOX | LH2/LOX | LH2/LOX | LH2/LOX | |||||||
| Total thrust (vac) | kN | 146.8 | 182.4 | 185.0 | 195.7 | 198.4 | ||||||
| Specific impulse (vac) | N*s/kg | 4358 | 4378 | 4402 | 4378 | 4418 | ||||||
| Burn time | s | 502.7 | 406.4 | 402.7 | 378.7 | 377.0 | ||||||
| Total impulse (vac) | MN*s | 73.8 | 74.1 | 74.5 | 74.1 | 74.8 | ||||||
|
Stage 1 |
Name | Atlas II | Atlas II | Atlas II | Atlas II | Atlas II | ||||||
| Length | m | 26.04 | 26.04 | 26.04 | 26.04 | 26.04 | ||||||
| Diameter | m | 3.05 | 3.05 | 3.05 | 3.05 | 3.05 | ||||||
| Liftoff weight | t | 165.15 | 165.15 | 165.15 | 165.15 | 165.15 | ||||||
| Propellant weight | t | 156.26 | 156.26 | 156.26 | 156.26 | 156.26 | ||||||
| Engines | RS-56 OBA | RS-56 OBA | RS-56 OBA | RS-56 OBA | RS-56 OBA | |||||||
| Propellant | Kerosene/LOX | Kerosene/LOX | Kerosene/LOX | Kerosene/LOX | Kerosene/LOX | |||||||
| Total thrust (s.l.) | kN | 268.6 | 268.6 | 268.6 | 268.6 | 268.6 | ||||||
| Specific impulse (s.l.) | N*s/kg | 2161 | 2161 | 2161 | 2161 | 2161 | ||||||
| Burn time | s | 276.5 | 276.5 | 289 | 289 | 289 | ||||||
| Total impulse (vac) | MN*s | 106.5 | 106.5 | 111.4 | 111.4 | 111.4 | ||||||
|
Stage 0 |
Name | Rock. MA-5A | Rock. MA-5A | Rock. MA-5A | Rock. MA-5A | Rock. MA-5A | ||||||
| Length | m | 4.50 | 4.50 | 4.50 | 4.50 | 4.50 | ||||||
| Diameter | m | 4.88 | 4.88 | 4.88 | 4.88 | 4.88 | ||||||
| Liftoff weight | t | - | - | - | - | - | ||||||
| Propellant weight | t | - | - | - | - | - | ||||||
| Engines | 2 | RS-56 OSA | RS-56 OSA | RS-56 OSA | RS-56 OSA | RS-56 OSA | ||||||
| Propellant | Kerosene/LOX | Kerosene/LOX | Kerosene/ LOX | Kerosene/ LOX | Kerosene/ LOX | |||||||
| Total thrust (s.l.) | kN | 1,906 | 1,906 | 1,906 | 1,906 | 1,906 | ||||||
| Specific impulse (s.l.) | N*s/kg | 2570 | 2570 | 2570 | 2570 | 2570 | ||||||
| Burn time | s | 164 | 164 | 162 | 162 | 162 | ||||||
| Total impulse (vac) | MN*s | 354.3 | 354.3 | 349.7 | 349.7 | 349.7 | ||||||
|
Booster |
Name | 4 Castor IVA | 4 Castor IVA | |||||||||
| Length | m | 10.63 (9.20) | 10.63 (9.20) | |||||||||
| Diameter | m | 1.02 | 1.02 | |||||||||
| Liftoff weight | t | 46.512 | 46.512 | |||||||||
| Propellant weight | t | 40.404 | 40.404 | |||||||||
| Engines | Thiokol TX-780 | Thiokol TX-780 | ||||||||||
| Propellant | solid HTPB | solid HTPB | ||||||||||
| Total thrust (s.l.) | kN | 1,808.8 | 1,808.8 | |||||||||
| Specific impulse (s.l.) | N*s/kg | 2332 | 2332 | |||||||||
| Burn time | s | 52.1 | 52.1 | |||||||||
| Total impulse (vac) | MN*s | 105.8 | 105.8 | |||||||||