机械制造与自动化2023，Vol.52Issue(6)：138-141,4.DOI:10.19344/j.cnki.issn1671-5276.2023.06.035
翼吊低平尾布局飞机水上迫降数值仿真分析
Numerical Simulation Analysis of Wing-hung and Low-hip Aircraft Ditching
摘要
Abstract
In order to study the ditching of a wing-hung and low-hip aircraft,the simulation calculation of ditching was carried out for a certain type of aircraft based on Euler-Lagrange coupling method,and the applicability of the simulation method was verified by comparing with the results of the scaled model test.Based on the simulation results,the motion and load of the aircraft as well as the effects and mechanisms of the initial vertical velocity and initial pitch angle on the ditching process of the aircraft were analyzed.A strategy to reduce the ditching load of the wing-hung and low-HTP aircraft was proposed.The results show that the aircraft's looking-up first and bowing-down after,and the nose-down moment caused by the horizontal tail landing in the water limits the aircraft's head-up;the peak value of pitch angle variation decreases with the increase of vertical initial velocity and initial pitch angle;the peak vertical acceleration increases with the increase of the initial vertical velocity and decreases with the increase of the initial pitch angle;therefore,the initial vertical speed should be reduced as much as possible and the initial pitch angle should be increased.关键词
民用飞机/水上迫降/冲击载荷/仿真分析Key words
civil aircraft/ditching/impact load/simulation analysis分类
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何超杰,黄勇,罗文莉,陈皓宇..翼吊低平尾布局飞机水上迫降数值仿真分析[J].机械制造与自动化,2023,52(6):138-141,4.
