自从喷气式战斗机服役以来,航空医学研究的重点便集中在这类高性能飞机上。几十年来,普遍认为直升机的飞行高度低、速度慢,不存在特殊的航空医学问题。然而,近十来年由于武装直升机迅速发展,它的振动、噪声、缺氧、冷和热等环境应激因素,对飞行员的生理影响及引发的飞行安全问题变得越来越突 Since jet fighters are in service, the focus of aeromedical research has been on such high-performance aircraft. For decades, helicopters were generally thought to be flying at low altitudes and slow speeds, with no particular aeromedical problems. However, due to the rapid development of armed helicopters in recent ten years, its environmental stress factors such as vibration, noise, hypoxia, cold and heat have become more and more serious for the pilots’ physiological effects and flight safety issues