Pressure Suit
In 1934, with financial support from Frank Phillips of the Phillips Petroleum Company, Post began exploring the limits of high-altitude long-distance flight. The Winnie Mae's cabin could not be pressurized, so he worked with Russell S. Colley of the B.F. Goodrich Company to develop what became the world's first practical pressure suit. Three pressure suits were fabricated for Wiley Post; only the final version proved successful. The first suit ruptured during a pressure test. The redesigned second suit used the same helmet as the first but when tested was too tight and they were unable to remove it from Post, so they had to cut him out thus destroying the suit. The third suit was redesigned from the previous two.
The body of the suit had three layers: long underwear, an inner black rubber air pressure bladder, and an outer layer made of rubberized parachute fabric. The outer layer was glued to a frame with arm and leg joints that allowed him to operate the flight controls and to walk to and from the aircraft. Attached to the frame were pigskin gloves, rubber boots, and an aluminum-and-plastic diver's helmet. The helmet had a removable faceplate that could be sealed at a height of 17,000 ft, and could accommodate earphones and a throat microphone. The helmet was cylinder-shaped with a circular window. In the first flight using the suit on September 5, 1934, Post reached an altitude of 40,000 ft above Chicago. Eventually flying as high as 50,000 ft, Post discovered the jet stream and made the first major practical advances in pressurized flight. As of 2011 the suit is currently being restored.
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