| タイトル | Mars Ascent Vehicle Sizing, Habitability, and Commonality in NASA's Evolvable Mars Compaign |
| 本文（外部サイト） | http://hdl.handle.net/2060/20160002630 |
| 著者（英） | Chappell, Steven P.; Crues, Edwin Z.; Gernhardt, Michael L.; Bekdash, Omar S.; Beaton, Kara H.; Polsgrove, Tara T.; Rucker, Michelle A.; Litaker, Harry L.; Abercromby, Andrew F. J.; Howard, Robert L. |
| 発行日 | 2016-09-13 |
| 言語 | eng |
| 内容記述 | The Mars Ascent Vehicle (MAV) is the largest indivisible payload and has the largest "gear ratio" in NASA's Evolvable Mars Campaign (EMC) architecture, requiring from 7 to 15 kg of propellant to lift every kilogram of mass off of Mars surface. For this reason, the mass (and indirectly, volume) of the MAV cabin drives requirements for Mars Surface In-Situ Resource Utilization generators to manufacture propellants, which drives the surface power needs, and which also sets the Lander payload size, which drives the in-space transportation architecture, and the number of launches and time required to land humans on Mars Surface. Some of the architectures currently under consideration in the EMC utilize a chemical/solar electric propulsion hybrid that inserts into a 5 sol orbit and might require that the crew spend several days in the MAV prior to rendezvous with the Mars transit vehicle. There have been no human in the loop evaluations to generate the data necessary to inform decisions on the required size of the MAV. This data is critical to begin to close the various EMC architectures. Additionally, the EMC is pursuing options for a common cabin concept that could be used as a MAV, an in-space taxi between locations in the Mars system, for a Mars surface rover, and as an exploration vehicle for Mars moons. The common cabin concept consists of a core cabin that houses various work packages to support scientific exploration and short-term crew habitation. It can be outfitted with different mobility systems depending on mission needs, such as a reaction control system (RCS) mounted on a sled under the vehicle for exploration of Mars moons or other deep space locations such as asteroids. With an additional propulsion module, it can be used as a taxi. It can be mounted on a chassis for use as a Mars surface rover. Finally, it can be attached to ascent/descent engines to serve as a MAV. The common cabin approach could be facilitated through a standard interface design that for attachment of the different mobility systems. The interior of the cabin would also be outfitted differently based on the mission of the particular vehicle. |
| NASA分類 | Space Transportation and Safety; Lunar and Planetary Science and Exploration |
| レポートNO | JSC-CN-35572 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/561611 |
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