| タイトル | Lunar Portable Life Support System Heat Rejection Study |
| 著者（英） | Sompayrac,Robert G.; Bue, Grant C.; Trevino, Luis A.; Conger, Bruce |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2009-01-01 |
| 言語 | eng |
| 内容記述 | Performing extravehicular activity (EVA) at various locations of the lunar surface presents thermal challenges that exceed those experienced in space flight to date. The lunar Portable Life Support System (PLSS) cooling unit must maintain thermal conditions within the space suit and reject heat loads generated by the crewmember and the PLSS equipment. The amount of cooling required varies based on the lunar location and terrain due to the heat transferred between the suit and its surroundings. A study has been completed which investigated the resources required to provide cooling under various lunar conditions, assuming three different thermal technology categories: 1. Spacesuit Water Membrane Evaporator (SWME) 2. Subcooled Phase Change Material (SPCM) 3. Radiators with and without heat pumps Results from the study are presented that show mass and power impacts on the cooling system as a function of the location and terrain on the lunar surface. Resources (cooling equipment mass and consumables) are greater at the equator and inside sunlit craters due to the additional heat loads on the cooling system. While radiator and SPCM technologies require minimal consumables, they come with carry-weight penalties and have limitations. A wider investigation is recommended to determine if these penalties and limitations are offset by the savings in consumables. |
| NASA分類 | Man/System Technology and Life Support |
| レポートNO | 09ICES-0311
JSC-CN-17417
JSC-CN-18001 |
| 権利 | Copyright |
