飞机拦阻钩振动运动学和拦索动力学研究

A DISCUSSION OF BOUNCE KINEMATICS OF AIRCRAFT ARRESTING HOOK AND CABLE DYNAMICS

本文对拦阻着陆中出现的拦阻钩振动和拦阻动载两大重要问题作了阐明和分析。重点研究和推演了飞机地面滑行中拦阻钩的二类振动运动学及其微分方程特性;钩的阻尼振动轨迹特性;阻尼器参数选择。 在拦索应变动载的研究中阐明了飞机对中拦阻、偏心拦阻、使用不同拦索材料的应变动载特性,并进行了实例计算分析,证实了飞机拦阻的拦索应变动载大小与地面拦阻装置的配置、拦索材料、飞机着陆的偏心程度等有密切关系。

The bounce kinematics of aircraft arresting-hook and arresting gear dynamics produced by strain of nylon or wire rope system is discussed and analysed. The first is bounce kinematics produced by hook motion through a smooth runway or a runway with obstructions following touch-down from a sinking approach; the second is boun-e kinematics during landing with three wheels. The later part of this paper discusses, respectively, arresting gear dynamics of centerline engagement condition and off-center engagement condition for nylon or wire rope system, and provides an example to describe their effects of arresting gear dynamics for various arresting cable lengths.