Spacesuit

Space

​

Vacuum (No oxygen)

No gravity

Huge temp. variation

-270^oC~1000^oC(radiation)

​

Body (high pressure) <-> Space ( low pressure)

Insulation (radiation, conduction) no convection, no evaporation

Thermal management (evaporation inside)

Mercury Suite (1961-1963)

-For venture into orbit around Earth

-High-altitude jet-aircraft pressure suits from US Navy

-Neoprene-coated nylon inside (high pressure strength)

-Aluminized nylon outside (block radiation)

-Six astronauts tried

Gemini Spacewalk Suit (1965-1966)

-For acitivies outside of aircraft

-Comfortable mobility than Mercury suit

-Portable A/C

-Six layers of Nylon + Nomex + outer Nomex + 2 layers of Mylar

(-157^oC~121^oC)

One thick layer of Nylon VS six layers of Nylon ?

Mylar: aluminized PET film

Apollo Spacewalk Suit (1967-1975)

-More protection than Mercury/Gemini suits

-Need shield from sharp dusts in the moon

-Lasts independently for hrs

• The outer shell was Teflon
• The next layer was Teflon-coated fiberglass
• Layers 3 and 5 were aluminized Kapton
• Layers 4 and 6 were Teflon-coated fiberglass laminated to Kapton
• Layers 7, 9, 11, 13, 15 were aluminized Mylar
• Layers 8, 10, 12, 14 were Dacron
• Layers 16 and 18 were Neoprene-coated Nylon
• Layers 17, 22, and 24 were Nylon
• Layer 19 was Neoprene
• Layer 21 was Nomex
• Layer 23 was Vinyl tubing

Kapton: polyimide film

Space Shuttle Flight Suit (1981)

-For acitivies In Space Shuttle

-Modified version of US Air Force High-altitude pressure suit

-Nomex, Neoprene+Nylon

Extravehicular Mobility Suit (1979-present)

-14-layer pressurized suit

-Astronauts can be alive more than 8 hrs

-Jepack-like device for mobility

SpaceX Crew Dragon Flight Suit (2020-present)

-Not for taking a space walk