Delta-v ramani
Ni kiasi gani cha mabadiliko katika kasi inachukua kusonga kati ya Dunia, obiti, Mwezi, Mars na asteroidi.
ESO/S. Guisard (www.eso.org/~sguisard) (CC BY 4.0)
Delta-v ramani
Jumla delta-v
Hatua
Maadili ni njia moja, bora impulsive manoeuvres isipokuwa alama kawaida. Misheni halisi kuongeza hasara na mabadiliko ya ndege.
meza data (nakala mbadala)
| Kutoka | Kwa | → | ← | Jinsi ilikuwa kazi nje |
|---|---|---|---|---|
| uso wa dunia | Dunia ya chini orbit (200 km) | 9.4 km/s | 0 km/s (unaweza kutumia aerobraking) | kawaida (ilichapishwa): Delta-v budget (Wikipedia, with its cited references), typical values including lossesKuanzisha orbit: kuhusu 7.8 km / s ya kasi orbit plus hasara kwa gravity na hewa drag. |
| Dunia ya chini orbit (200 km) | Geostationary kuhamisha orbit | 2.45 km/s | 2.45 km/s (unaweza kutumia aerobraking) | mahesabu (ideal): Hohmann perigee burn, 200 km to 35,786 km altitude, equatorial |
| Geostationary kuhamisha orbit | Obiti ya Dunia | 1.48 km/s | 1.48 km/s | mahesabu (ideal): Hohmann apogee burn, no plane changeKutoka mahali pa kurushwa mbali na ikweta, pia mabadiliko ya mwelekeo wa obiti huongeza mita mia kadhaa kwa sekunde. |
| Dunia ya chini orbit (200 km) | Dunia kutoroka | 3.22 km/s | 3.22 km/s (unaweza kutumia aerobraking) | mahesabu (ideal): Escape speed minus circular speed at 200 km |
| Dunia ya chini orbit (200 km) | Kuhamisha kwa mwezi | 3.13 km/s | 3.13 km/s (unaweza kutumia aerobraking) | mahesabu (ideal): Raise apogee to the Moon's mean distance |
| Kuhamisha kwa mwezi | Chini mwezi orbit (100 km) | 0.82 km/s | 0.82 km/s | mahesabu (ideal): Patched conic capture into a 100 km lunar orbit |
| Chini mwezi orbit (100 km) | Mwezi uso | 1.63 km/s | 1.63 km/s | mahesabu (ideal): Circular speed at 100 km (ideal, no gravity losses; real landings need more) |
| Dunia ya chini orbit (200 km) | Kuhamisha kwa Mars | 3.61 km/s | 3.61 km/s (unaweza kutumia aerobraking) | mahesabu (ideal): Earth-Mars Hohmann departure from 200 km, Oberth effect included |
| Kuhamisha kwa Mars | Chini ya Mars orbit (300 km) | 2.09 km/s (unaweza kutumia aerobraking) | 2.09 km/s | mahesabu (ideal): Capture into a 300 km circular Mars orbit |
| Chini ya Mars orbit (300 km) | Mars uso | 0 km/s (unaweza kutumia aerobraking) | 4.1 km/s | kawaida (ilichapishwa): Delta-v budget (Wikipedia, with its cited references), typical values including lossesKuteremka kwa kawaida hutumia angahewa (kinga ya joto na parachute); kupanda tena kwenye obiti ni thamani ya kawaida iliyochapishwa. |
| Dunia ya chini orbit (200 km) | Near-Earth asteroid (Bennu) | 4.11 km/s | 4.11 km/s (unaweza kutumia aerobraking) | mahesabu (ideal): Heliocentric Hohmann 1 au to Bennu's semi-major axis, coplanar (ignores its 6 degree inclination and its eccentricity); departure from 200 km LEO |
| Dunia ya chini orbit (200 km) | Orodha ya milima | 9.48 km/s | 9.48 km/s (unaweza kutumia aerobraking) | mahesabu (ideal): Heliocentric Hohmann 1 au to Ceres, coplanar (ignores its 10.6 degree inclination); departure from 200 km LEO, capture into a 200 km Ceres orbit |
Vifaa na masomo kutumia mifano rahisi kwa ajili ya kujifunza tu. Hawapaswi kutumika kwa ajili ya urambazaji, mipango ya kazi au uamuzi wowote wa uendeshaji. Shahada ni bure na si-kuheshimiwa. Soma maudhui ya elimu kutowajibika