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A well-photographed article on Dr. Smith’s obsession in Australia’s Smith Journal.

Link to Dr. Smith’s synopsis of forthcoming 2017/2018 technical (graduate-level) space-colonization foundations text, “Principles of Space Anthropology: Biological and Cultural Evolution Beyond Earth” (Springer).

Link to Dr. Smith’s 2016 paper in Journal of the British Interplanetary Society, “The MarsCart: Simple, Reliable, Non-Powered, Field-Maintainable Transportation for Short-Range, Small-Payload Extravehicular Activity on Mars“.

Link to Dr. Smith’s 2015 paper in Acta Astronautica, “An Adaptive Paradigm for Human Space Settlement“.

Link to Dr. Smith’s 2014 paper in Acta Astronautica, “Estimation of a Genetically Viable Population for Interstellar Voyaging“.

Summer 2014 Test Flight Gas Routing Schematic

Time of Useful Consciousness Above FL180

Pacific Spaceflight 2014-1015 Projects

Pacific Spaceflight Research Brief 2016-1

Pacific Spaceflight Research Brief 2015-2

Pacific Spaceflight Research Brief 2015-1

Pacific Spaceflight Research Brief 2014-1

Pacific Spaceflight Research Brief 2013-2

Pacific Spaceflight Research Brief 2013-1

Link to Dr. Smith’s 2012 preface to “Emigrating Beyond Earth” (Springer-Praxis).

4 Comments so far:

  1. Jeffrey Bohemier says:

    I’m know that Dr. Smith’s been working on this system for years, so any suggestion I may provide is just that. As a scuba diver, it seems like a huge waste of oxygen to allow it to exit a dump valve on the suit. Have you thought about reclaiming this oxygen? I think hooking the outlet of the suit to a type of rebreather system would allow the suit’s passenger to use all the oxygen vice just a small part of it. In doing so, less oxygen would be required to be carried on board, reducing both overall weight and the risk of fire. Such a system would use 100% of the tank’s available oxygen, making the need for the size of the tank to drop significantly.

    Additionally, how’s the suit insulting the passenger while in the Earth’s atmosphere? While heat loss is not very significant in the vacuum of space, I would imagine that it could become an issue while transiting the atmosphere, as its a good conductor of heat away from the body. I watched your video on YouTube and was quite impressed with the suit you’ve developed over the past several years. It looks like a fascinating endeavor your on. Have you given the suit a long term test to see if it’s passenger can endure wearing the suit over an extended length of time? Modifications to handle human waste? Again, I couldn’t be more impressed with your results to date. I wish you the best of luck, and keep charging forward.

    • Thanks, Jeffrey, you’re correct that the high ventilation rate dumps a lot of gas. And, we are in fact working on a C02 scrubber to reclaim some of that gas. However, it’s been a relatively low priority for several reasons. First, our breathing gas consumption rates are easily met by a moderate amount of gas for a 2-3 hour test flight. That is, we can use gaseous rather than liquid oxygen, which saves a lot of complexity. Second, each spacecraft has its own method of delivering breathing and other gases, so we are remaining general in this design regard rather than specific; if there is specificity, it is for our balloon test flight. Third, we have so far been building also for the Copenhagen Suborbitals Tycho Deep Space capsule, which had its own design criteria that informed our design criteria. This highlights the close coordination of any launch-entry suit with the spacecraft and its particular design.

      Thanks for your interest. If you’re in Portland, come by some time to see the system in action! We often open doors on Sundays during work sessions. Just email me, b5cs>at

  2. Steve Adams says:

    Have you considered an oxygen mask with CO2 absorption pouches with one way valves on the side to absorb the the CO2 and intake in front of the nose with a one way valve? An oxygen line could supply a constant amount of O2 with a manual override to supply a burst of O2. Seems like a simple mod.

  3. Thanks, Steve — yes, we’re working with a lot of C02 scrubbing ideas, it’s our main priority now that we’ve knocked out suit mobility at high pressures. We’ll be posting on this at our Twitter site (see link bottom of page) and on my blog (see link above, BLOG). Regards CMS

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