Abstract A number of critical technologies are needed for a human mission to Mars that require considerable further development. These include life support: environmental control and life support systems (ECLSS), mitigation of radiation and low gravity effects, providing abort options, potential utilization of indigenous planetary resources, and human factors associated with long durations in confined space. While significant progress was made on ECLSS prior to 2005, there is little indication of progress in the past decade. NASA has made progress in understanding radiation effects but as more information accrues, the problem appears worse. Work on artificial gravity seems moribund. Use of simulated habitats in remote areas on Earth is helping to gradually understand issues associated with confined space. A vital need for a human mission to Mars is aero-assisted entry, descent and landing (EDL) of massive payloads. There is no experience base for landing payloads with mass of multi-tens of mT. Modeling by the Georgia Tech team indicates that the mass of EDL systems will be considerably greater than that assumed by NASA Design Reference Missions. Nevertheless, aero assisted EDL requires far less mass than EDL based on propulsion, and use of propulsion for EDL is probably unaffordable. Developing, testing and validating such massive entry systems will require a two-decade program with a significant investment. Based on past performance, NASA does not appear to have the discipline to follow through on such a program.


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    Title :

    Critical Mars Mission Elements


    Contributors:


    Edition :

    2nd ed. 2016


    Publication date :

    2015-10-30


    Size :

    90 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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