Standard Engine and DV Values
Adam London
Delta-V Requirements
(2 day LEO-LS trip)
| DV Earth to LEO | 30,000 fps | 9144 m/s | |
| DV TLI | 10,040 fps | 3060 m/s | |
| DV Lunar Landing | 6,890 fps | 2100 m/s | |
| DV Lunar Ascent | 6,135 fps | 1870 m/s | |
| DV TEI | 3,230 fps | 984 m/s | |
| DV EOI (no aerobrake) | 10,580 fps | 3225 m/s
| |
Engine Properties
(LH2/LOX, advanced, hypothetical engine)
| c E-LEO | 13,125 fps | 4000 m/s (rocket
exhaust velocity) | |
| c vaccum | 14,765 fps | 4500 m/s (rocket exhaust
velocity) | |
| T/W | 50 | (thrust to weight of engine itself)
| |
In other words, trajectory-ave isp of 408 sec for E-LEO, isp of 459 sec
for vacuum. Both are educated guesses.
ASI W9601105r1.1.
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