Physics of Biology

   

Human Rating Requirements for Mars Missions

Authors: Gary V Stephenson

Abstract. Human rating requirements are explored for space systems associated with the transport of a human crew for missions to and from Mars. Human rating certification requirements guidance is given by NPR 8705.2B and broadly speaking consists of four steps: step 1, comply with human rating certification processes; step 2, develop and comply with a reference mission; step 3, comply with human rating technical requirements; and step 4, prepare and maintain a Human Rating Certification Package (HRCP) that demonstrates compliance with the first three steps. The design challenges specific to a Missions to Mars (M2M) are described and include long endurance human habitation during interplanetary (IP) space travel, with higher than usual radiation exposure and lower than usual gravitation exposure, crew control requirements with expanded need for autonomous operations and control and operator situational awareness, and contingency operations for survivability. Due to the extreme physical isolation of the crew during missions to Mars there will be the need to trade lifeboat options with in situ survivability options in the case of contingency operations. These human rating challenges are placed in the context of the design development of mission equipment needed for a Mission to Mars. It is assumed that the M2M equipment suite can be divided into four distinct systems, all of which will require human rating: a launch and LEO operations vehicle, a transhab vehicle for IP travel, a Martian orbital operations vehicle, and a Martian surface habitat. A methodology for flowing human rating requirements to each of these systems is identified and outlined. Keywords: Human, Rating, Requirements, Certification, NASA, Standards. PACS: 96.30.Gc, 96.30.Hf, 96.55.+z, 91.62.Fc

Comments: 25 Pages. As presented revision

Download: PDF

Submission history

[v1] 2012-07-29 16:48:15
[v2] 2012-07-30 15:11:13
[v3] 2012-08-07 00:28:37

Unique-IP document downloads: 492 times

Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.

Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.

comments powered by Disqus