The airtaxi Figure 2 V-22 OSPREY tilt rotorcrafts Rotorcraft is still a rare aircraft in China,especially large and medium-sized rotorcraft,of which markets,using fields and development model is almost a blank Rotor aerodynamic characteristics study is rare,the only research is led by professor Gao Zhen's team on the aerodynamic characteristics of helicopter rotor rotation on exploring the research,and introduced abroad in cooperation with the military and civilian battalion company small rotorcraft,accumulated a certain amount of rotor machine design and the use ofengineering experience. 1.5 Fundamental principle Gyroplane is a kind of rotor aircraft using rotor as the propeller lifting surface, push/pull or other means ofenergy as power. 一 力 高合器 顾转传动绳件 粥编发动机 层传动输 飞轮组件（商合器）主传动铺 发动机 Figure 3 a)typical helicopter b)typical medium to large-scale gyroplane From the appearance,gyroplane and helicopters are very similar,they are equipped with a pair of big rotor above the fuselage;there are also some small fixed wing and fuselage,tail,landing gear,and power plant.Gyroplane remains the state of rotation relying on the flow moving ahead,so once the engine parking in the air,it can directly landing rely on the rotor rotation,while the helicopter rotor need a shift into the process of rotation manipulation,so gyroplane doesn't have avoiding area at lowThe air taxi 8 Figure 2 V - 22 OSPREY tilt rotorcrafts Rotorcraft is still a rare aircraft in China, especially large and medium-sized rotorcraft, of which markets, using fields and development model is almost a blank. Rotor aerodynamic characteristics study is rare, the only research is led by professor Gao Zhen’s team on the aerodynamic characteristics of helicopter rotor rotation on exploring the research, and introduced abroad in cooperation with the military and civilian battalion company small rotorcraft, accumulated a certain amount of rotor machine design and the use of engineering experience. 1.5 Fundamental principle. Gyroplane is a kind of rotor aircraft using rotor as the propeller lifting surface, push/pull or other means of energy as power. Figure 3 a) typical helicopter b）typical medium to large-scale gyroplane From the appearance, gyroplane and helicopters are very similar, they are equipped with a pair of big rotor above the fuselage; there are also some small fixed wing and fuselage, tail, landing gear, and power plant. Gyroplane remains the state of rotation relying on the flow moving ahead, so once the engine parking in the air, it can directly landing rely on the rotor rotation, while the helicopter rotor need a shift into the process of rotation manipulation, so gyroplane doesn't have avoiding area at low