| OTRAG |
KAYSER 1 |
KAYSER 1* |
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Overall Vehicle |
Operational | from | ||||
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|
to | |||||
| Orbital flights | Project | Project | ||||
| Payload weight | t | LEO | - | LEO | ~1.0 | |
| Gross liftoff weight | t | ~103.7 | ~98.8 | |||
| Gross propellant weight | t | ~85.9 | ~85.9 | |||
| Total length | m | ~30 | ~30 | |||
| Max. diameter (span) | m | |||||
| Total liftoff thrust (s.l.) | kN | 1,680 (max) | 1,680 (max) | |||
| Total impulse (vac) | MN*s | 212.7 | 250.2 | |||
|
Fairing |
Total length | m | ||||
| Diameter | m | |||||
| Total weight | t | |||||
| Stage 3 | Name | 4 x CRPM | 4 x CRPM | |||
| Length | m | 25 | 25 | |||
| Diameter | m | |||||
| Liftoff weight | t | ~6.5 | ~6.1 | |||
| Propellant weight | t | ~5.4 | ~5.4 | |||
| Engines | OTRAG (4) | OTRAG (4) | ||||
| Propellant | Diesel / HDA | Diesel / HDA | ||||
| Total thrust (vac) | kN | 110.0 (av.) | 110.0 (av.) | |||
| Specific impulse (vac) | N*s/kg | 2476 | 2912 | |||
| Burn time | s | 120.5 | 142 | |||
| Total impulse (vac) | MN*s | 13.3 | 15.6 | |||
| Stage 2 |
Name |
12 x CRPM | 12 x CRPM | |||
| Length | m | 25 | 25 | |||
| Diameter | m | |||||
| Liftoff weight | t | ~19.4 | ~18.3 | |||
| Propellant weight | t | ~16.1 | ~16.1 | |||
| Engines | OTRAG (12) | OTRAG (12) | ||||
| Propellant | Diesel / HDA | Diesel / HDA | ||||
| Total thrust (vac) | kN | 330.1 (av.) | 330.1 (av.) | |||
| Specific impulse (vac) | N*s/kg | 2476 | 2912 | |||
| Burn time | s | 120.5 | 142 | |||
| Total impulse (vac) | MN*s | 39.9 | 46.9 | |||
|
Stage 1 |
Name | 48 x CRPM | 48 x CRPM | |||
| Length | m | 25 | 25 | |||
| Diameter | m | |||||
| Liftoff weight | t | ~77.8 | ~73.3 | |||
| Propellant weight | t | ~64.4 | ~64.4 | |||
| Engines | OTRAG (48) | OTRAG (48) | ||||
| Propellant | Diesel / HDA | Diesel / HDA | ||||
| Total thrust (s.l.) | kN | 1,200 (av.) | 1,200 (av.) | |||
| Specific impulse (s.l.) | N*s/kg | 2251 | 2648 | |||
| Burn time | s | 120.5 | 142 | |||
| Total impulse (vac) | MN*s | 159.5 | 187.6 | |||
|
* Version with optimistic OTRAG data (high Isp and less structural mass by 0.5 mm pipe thickness) |
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