|
Size: 1238
Comment:
|
Size: 1246
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 23: | Line 23: |
| || total ΔV || 11.371 || 13.074 || 11.184 || km/s || || trip time || 5.24 || 118.62 || 93.84 || hours || |
||'''total ΔV'''|| 11.371 || 13.074 || 11.184 || km/s || ||'''trip time'''|| 5.24 || 118.62 || 93.84 || hours || |
Lunar Base Power from L1 SSPS
L1SSPS
Baseline: Power a lunar base with a surface power plant
Delivering a power plant to Luna's surface requires a high speed launch into a Hohmann to Luna, plus extra velocity to match Luna's 1.022 km/s (average) orbit velocity, plus lunar escape velocity, 2.38 km/s .
Luna's semimajor axis is 384,400 km - let's use that for the "average" radius. Luna's equatorial radius is 1738 km, so a direct Hohmann to the nearside surface has an apogee of 384,400 - 1738 = 382,662 km .
Lunar L1 is 326,390 km from Earth's center.
We can calculate total delta V, launching from the launch loop:
|
Earth + 80km to: |
|||
|
GEO |
Luna |
L1 |
|
perigee |
6458 |
6458 |
6458 |
km |
apogee |
42164 |
382662 |
326390 |
km |
Vperigee |
10.346 |
11.018 |
11.002 |
km/s |
Vapogee |
1.585 |
0.186 |
0.218 |
km/s |
ΔV launch |
9.881 |
10.553 |
10.537 |
km/s |
Varrive |
1.490 |
0.832 |
0.647 |
km/s |
ΔV landing |
1.490 |
2.521 |
0.647 |
km/s |
total ΔV |
11.371 |
13.074 |
11.184 |
km/s |
trip time |
5.24 |
118.62 |
93.84 |
hours |