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水平尾翼的主要功能是保证飞机具有纵向静稳定性和俯仰可操纵性。民用飞机由于起飞重量大、重心变化范围广,对平尾的操纵性要求很高,为了提高平尾的操纵效率,民用飞机一般采用平尾安定面可微动的设计手段,加上升降舵偏转以及翼身洗流等因素的影响,使得飞行中平尾处的流场变得非常复杂,如何准确或偏保守地确定平尾上的气动载荷一直是民用飞机飞行载荷计算中的一个难点。介绍了民用飞机平尾气动总载荷和载荷分布的计算原理和方法,并提出了如何协调基于测力、测压试验得到的载荷,以及平尾弦向分布载荷的修正方法。
The main function of the horizontal tail is to ensure that the aircraft has longitudinal static stability and pitch maneuverability. Civil aircraft due to the weight of takeoff, wide range of changes in center of gravity, the handling requirements of the tail is very high, in order to improve the efficiency of the end of the flat tail, civil aircraft commonly used flat tail stabilizers can be designed to move, plus elevator deflection and wing body wash Flow and other factors make the flow field at the flat tail of the flight become very complicated. How to determine the aerodynamic load on the flat tail accurately or partly has always been a difficulty in the calculation of civil aircraft flight load. The calculation principle and method of total aerodynamic load and load distribution of civil aircraft are introduced. And how to coordinate the load based on force and pressure test and the method of correcting the distribution load in the horizontal direction is proposed.