← INDEX — FIG. 00 — EMU 29.6 kPa (4.3 PSI), 100 % O₂
R = PN₂ / Psuit ≤ 1.65
SUIT
SPACESUITS AND SPACEWALKS
A spacesuit is a one-person spacecraft that you have to bend.
BEGIN — CHAPTER 01 →CH.01 / 06 — A SPACECRAFT YOU WEAR
Pressure, oxygen, cooling, protection
Leonov had to bleed pressure in 1965.
EMU: 29.6 kPa, like a basketball.
CH.02 / 06 — SOFT OR SAFE
Lower pressure bends easier — and bubbles sooner
11.6 psi of nitrogen in the tissues.
R ≤ 1.65 for the EMU.
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R = 11.6 ÷ suit pressure.
CH.03 / 06 — BREATHING THE NITROGEN OUT
Hours of oxygen before the hatch opens
P(t) = Pa + (P0 − Pa)e^(−kt).
Shuttle staged protocol and ISS campout.
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Single-compartment model.
CH.04 / 06 — SIX HOURS INSIDE A BALLOON
Heat, gloves and the long day
Cooling for 1,600 BTU/h.
Walking raises the risk.
CH.05 / 06 — FROM THE SHUTTLE TO THE STATION
Forty years of washing out nitrogen
Nitrogen leaves one exponential at a time.
CH.06 / 06 — REFERENCES