Space suits -- Testing, Life support systems (Space environment) -- Design and construction
Pacific Spaceflight’s Mark II pressure garment (model Gagarin) was test flown to 17,200 feet MSL (5,242m) while worn and operated by Dr. C.M. Smith. The garment and its portable life support system (PLSS) maintained appropriate pressure, temperature and carbon dioxide levels throughout the 47-minute flight. The suit also provided sufficient elbow mobility, due to its convolute joints, for the suited person to operate the portable life support system’s manual suit pressure setting valve and the hand-held radio.
Smith, C. (2014). Flight Test of Pacific Spaceflight Pressure Garment Mark II in Bell 206 Jet Ranger. Pacific Spaceflight Research Brief #2014-1.