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针对中等展弦比、中等后掠角机翼布局的超声速飞机在亚跨声速飞行时遇到的操纵特性异常现象,通过估算飞机在海拔5 km高空的气动特性,获得了飞机的纵向平衡性能和静操纵性的变化规律。通过数值计算,得到了飞机在低空跨声速飞行时的操纵特性;分析了造成飞机在某些飞行速度下操纵跟随性较差、大速度飞行时俯仰操纵过于灵敏、不同速度下杆力变化大等现象的原因。针对亚跨声速区的飞行与操纵特点,给出了飞行操纵建议,以提高飞行安全。
Aiming at the anomaly of maneuvering characteristic of supersonic aircraft with medium aspect ratio and medium sweep angle profile in transonic flight, the longitudinal balance performance of the aircraft is obtained by estimating the aerodynamic characteristics of the aircraft at altitude of 5 km Static control of the law of change. Through the numerical calculation, the maneuvering characteristics of the aircraft during low-altitude transonic flight are obtained. It is analyzed that the maneuverability of the aircraft under certain flight speed is poor, the pitch control is too sensitive during high-speed flight, and the rod force varies greatly at different speeds The reason of the phenomenon. Aiming at the characteristics of flight and maneuver in the transonic region, the flight control suggestions are given to improve flight safety.