Advanced Crew Escape Suit

Advanced Crew Escape Suit

An astronaut wearing the ACES suit prior to the launch of STS-130
Type	Full pressure IVA suit
Manufacturer	David Clark Company[1]
Operating pressure	3.5 psi (24 kPa)[1]
Mass	92 lb (42 kg)[1]
Life support	10 minutes[1]
Derived from	USAF Model S1034[1]
Derivatives	Constellation Space Suit Orion Crew Survival System
Used for	Space Shuttle

The Advanced Crew Escape Suit (ACES), or "pumpkin suit",^[2] is a full pressure suit that Space Shuttle crews began wearing after STS-65, for the ascent and entry portions of flight. The suit is a direct descendant of the U.S. Air Force high-altitude pressure suits worn by the two-man crews of the SR-71 Blackbird, pilots of the U-2 and X-15, and Gemini pilot-astronauts, and the Launch Entry Suits (LES) worn by NASA astronauts starting on the STS-26 flight, the first flight after the Challenger disaster. The suit is manufactured by the David Clark Company of Worcester, Massachusetts. Cosmetically the suit is very similar to the LES. ACES was first used in 1994.