直升机在空中以旋翼打尾梁形态的飞行事故占相当比例.差不多都造成直升机报废,并且往往造成人员伤亡。在我国的民用直升机运行中,先后发生过三起在空中旋翼打尾梁的重大飞行事故,报废直升机三架,机上人员全部遇难。随着我国改革开放的发展和国民经济发展水平的提高,势必促使民用直升机的数量逐渐增加。研究直升机在空中旋翼打尾梁的机理,明确预防措施,对避免发生同类飞行事故,提高我国民用航空安全水平是很必要的。一、在我国发生的民用直升机在空中旋翼打尾梁的飞行事故 Helicopters occupy a substantial proportion of flying accidents in the form of tailgates in the air, leaving almost all helicopters to be scrapped and often causing casualties. In the operation of civilian helicopters in our country, there have been three major flying accidents involving the tail rotor of the airborne rotor and three scrapped helicopters. All the crew members were killed. With the development of China’s reform and opening up and the improvement of the national economy, it is bound to gradually increase the number of civilian helicopters. It is necessary to study the mechanism of helicopters playing tailgun on air rotors and to make clear preventive measures so as to avoid the occurrence of similar flight accidents and improve the safety level of civil aviation in our country. First, civil helicopters took place in our country in the air wing hitting the tail beam flight accident