PlanetSpace Comp. / ATK / Boeing Comp. | Athena-III | |||
Overall Vehicle |
Operational | from | ||
to | ||||
Orbital flights | 0 | |||
Payload weight | t | SSO | 4.30 | |
Gross liftoff weight | t | ~468 | ||
Gross propellant weight | t | 406.58 | ||
Total length | m | ~52.0 | ||
Max. diameter (span) | m | |||
Total liftoff thrust (s.l.) | kN | 9,274 | ||
Total impulse (vac) | MN*s | 1,103.0 | ||
Fairing |
Total length | m | ~10.0 | |
Diameter | m | ~3.60 | ||
Total weight | t | ~1.3 | ||
Stage 4 |
Name |
O.A.M. | ||
Length | m | 0.81 | ||
Diameter | m | 2.34 | ||
Liftoff weight | t | 0.714 | ||
Propellant weight | t | 0.354 | ||
Engines |
MR-107 (4) |
|||
Propellant | Hydrazine | |||
Total thrust (vac) | kN | 0.89 | ||
Specific impulse (vac) | N*s/kg | 2206 | ||
Burn time | s | 890 | ||
Total impulse (vac) | MN*s | 0.78 | ||
Stage 3 |
Name |
Castor-30 | ||
Length | m | 3.50 | ||
Diameter | m | 2.34 | ||
Liftoff weight | t | 14.061 | ||
Propellant weight | t | 12.837 | ||
Engines | Thiokol | |||
Propellant |
solid HTPB |
|||
Total thrust (vac) | kN | 258.9 | ||
Specific impulse (vac) | N*s/kg | 2890 | ||
Burn time | s | 143 | ||
Total impulse (vac) | MN*s | 37.1 | ||
Stage 2 |
Name | Castor 120 | ||
Length | m | ~11.0 | ||
Diameter | m | 2.36 | ||
Liftoff weight | t | 54.00 | ||
Propellant weight | t | 49.01 | ||
Engines | Thiokol | |||
Propellant | solid HTPB | |||
Total thrust (vac) | kN | 1,685.9 | ||
Specific impulse (vac) | N*s/kg | 2736 | ||
Burn time | s | 79.5 | ||
Total impulse (vac) | MN*s | 134.1 | ||
Stage 1 |
Name | RSRM-2.5 | ||
Length | m | 26.34 | ||
Diameter | m | 3.71 | ||
Liftoff weight | t | 393.50 | ||
Propellant weight | t | 344.38 | ||
Engines | Thiokol | |||
Propellant | solid PBAN | |||
Total thrust (s.l.) | kN | 9,274.0 (max) | ||
Specific impulse (s.l.) | N*s/kg | 2452 | ||
Burn time | s | 113.2 | ||
Total impulse (vac) | MN*s | 931.0 |