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急滚惯性耦合运动,是飞机作快速横滚机动时,由于本身质量的惯性力矩使迎角和侧滑角大幅度变化的理象。它是最重要的大扰动运动问題之一。在各主要航空国的军用飞机品质规范中,常对飞机急滚惯性耦合运动的操稳特性提出专门要求。我国规范在此方面的要求,大致与美国规范的要求相符。本文通过对一架典型歼击机的数值解(精确解),分析急滚耦合运动的物理特征。分析和说明品质规范中规定有关条款的理由以及各主要参数对此运动的影响。对我国规范(试用本)背景材料和使用说明中个别规定的合理性作一点探讨。希望在对本课題有关的各方面同志的共同努力下,能寻求面在大扰动情况下军用飞机操稳特性的更合理的计算方法,从而使有关的飞行品质条款更趋完善。在研究数值解的同时,还将所得结果与解析解(线化解)作了比较。分析了急滚耦合运动的非线性特征,以及数值解和精确解之间的联系。
Hurricane Inertia coupled motion is the reason that when the airplane makes a rapid roll maneuver, the angle of attack and the side slip angle greatly change due to the inertia moment of its own mass. It is one of the most important big disturbance motion problems. In the military aircraft quality specifications of major aviation countries, special requirements are often put forward on the handling characteristics of the aircraft’s rapid inertial coupled movement. The requirements of our country’s regulations in this respect are generally in line with the requirements of the U.S. norms. In this paper, by analyzing the numerical solution (exact solution) of a typical fighter plane, the physical characteristics of the coupled emergency-rolling motion are analyzed. Analyze and explain the rationale for the relevant provisions in the quality specifications and the impact of each of the main parameters on the campaign. On China’s normative (trial version) background material and instructions in the individual provisions of the rationality of a little discussion. It is hoped that with the concerted efforts of all the comrades involved in this project, it will be possible to seek a more reasonable method of calculating the handling characteristics of military aircraft under major disturbances so as to further improve the relevant flight quality clauses. While studying the numerical solution, the results obtained are also compared with the analytic solution (line solution). The nonlinear characteristics of the rapid rolling coupling are analyzed, and the connection between numerical solution and exact solution is analyzed.