NASA Poop Challenge

NASA Poop Challenge


Here are documents related to my entry in this particularly difficult challenge put forward by NASA.

Challenge can be found at:

My entry form responses:



My presentation slides:

SST-sketches-ODELL Space-Poop-Challenge-presentation-slides


My crappy sketches (get it?):



To be eligible for an award, the solution must, at minimum:

  • Keep urine and/or fecal waste away from a crew member’s body for a minimum of 144 hours while in a space suit
  • Operate in a microgravity scenario
  • Operate within a full launch and entry suit at an internal pressure of 4.3 PSID and 100% oxygen environment which cannot be opened for manual access within the 144 hour time period
  • Operate while a crew member is moving, bending, and/or seated and strapped into a chair
  • Manage at least one of the three following human wastes for up to 6 days
    • Manage up to 1L per day of urine per crew member (based on planned liquid intake during mission)
    • Manage up to 75 grams of fecal mass and 75mL fecal volume per crew member (based on planned food intake during mission).  Fecal matter may range from liquid to solid, but the Solution is not required to handle uncontrollable, ongoing diarrhea.
    • Manage up to 80 mL of menstrual fluid over 6 days
  • Require less than five minutes for a crew member to, on their own, set up and secure the Solution to their body, prior to, or along with, getting into their launch and entry suit.
  • Operate effectively for both men and women of varying size and weight within the range of 1% to 99% on the Airforce ANSUR anthropometric database. Please refer to the Resource Page and this document for ranges in relevant measurements for your solution, which might include, but not be limited to: waist circumference (24.2 to 43.5”), Buttock circumference (33.1 to 45.2”), Hip breadth, sitting (31.5 to 46.5”), Waist back (15.4 to 22”) and Waist depth (5.9” to 11.8”).