| タイトル | Effects of Some Typical Geometrical Contraints on Lunar Trajectories |
| 本文（外部サイト） | http://hdl.handle.net/2060/19980227829 |
| 著者（英） | Tolson, Robert H. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1961-08-01 |
| 言語 | eng |
| 内容記述 | A study has been made to determine the effects on lunar trajectories of some typical geometrical constraints. The constraints considered in this study are of two types, those resulting from specification of the trajectory characteristics near the earth and those associated with the specification of the approach conditions at the moon. The effects of the constraints are discussed from the standpoint of the limitations imposed by the constraints on the possible launch days during the month and also on the possible launch times during the day for three types of launch trajectories: direct-ascent, coasting-orbit, and parking-orbit launches. Application of the various constraints individually or in combination seriously restricts the allowable launch times during the month and day for the direct-ascent launch; whereas, less serious restrictions result for the coasting- and parking-orbit launches. |
| NASA分類 | Astronautics (General) |
| レポートNO | NASA-TN-D-938
L-1517 |
| 権利 | No Copyright |
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