飞机新牵引滑出方式下前起落架动响应分析

李跃明; 李晓云; 柴怡君; 杨雄伟

doi:10.7527/S1000-6893.2022.26915

航空学报 >

2022 , Vol. 43 >Issue 6: 526915 - 526915

DOI: https://doi.org/10.7527/S1000-6893.2022.26915

论文

飞机新牵引滑出方式下前起落架动响应分析

李跃明 ,
李晓云 ,
柴怡君 ,
杨雄伟

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西安交通大学航天航空学院, 机械结构强度与振动国家重点实验室, 先进飞行器服役环境与控制陕西省重点实验室, 西安 710049

收稿日期: 2022-01-07

修回日期: 2022-04-01

网络出版日期: 2022-07-07

基金资助

国家自然科学基金民航联合研究基金重点项目（U2033208）

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Dynamic response analysis of nose landing gear in aircraft new towing and taxiing mode

LI Yueming ,
LI Xiaoyun ,
CHAI Yijun ,
YANG Xiongwei

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State Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Key Laboratory of Environment and Control for Flight Vehicle, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received date: 2022-01-07

Revised date: 2022-04-01

Online published: 2022-07-07

Supported by

Key Projects of the Civil Aviation Joint Fund of the National Natural Science Foundation of China (U2033208)

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摘要

现行民航飞机离港时，需由牵引车推出泊位后再依靠飞机自身发动机动力进入跑道。为使机场更安全高效运行，人们正在探索一种全新的飞机滑出模式——牵引滑出，其无需发动机动力、即从飞机推出直至跑道端等待起飞均依靠地面的外部动力移动，由飞行员控制牵引车牵引的离港作业方式。其有助于实现高效、绿色、经济的机场运营目标。前起落架作为承载飞机重量和实现地面牵引滑行的关键组件，其动力学特性直接决定着飞机的高速牵引滑行安全，也影响着结构的后续飞行安全及全生命使用周期，故针对新一代牵引滑出方式的飞机前起落架力学行为开展研究十分必要。以某型民航飞机前起落架为研究对象，考虑减震支柱及牵引车轮胎的缓冲性能，研究了承受满载、高速牵引滑行时的前起落架的动特性、动响应行为，并给出了跑道随机不平度激励对前起落架随机响应的影响，获得了不同承载、不同牵引速度下前起落架动力学响应特性。结果表明，在前起落架满载高速牵引滑行中，牵引载荷在阻力臂的变形及振动响应中起主导作用。本文的研究结果可为新型牵引方式下前起落架的设计以及现役飞机的安全运行保障提供重要参考。

关键词： 前起落架; 满载高速; 牵引滑出; 随机响应; 动力学特性

本文引用格式

李跃明 , 李晓云 , 柴怡君 , 杨雄伟 . 飞机新牵引滑出方式下前起落架动响应分析[J]. 航空学报, 2022 , 43(6) : 526915 -526915 . DOI: 10.7527/S1000-6893.2022.26915

Abstract

Nowadays, a civil aviation aircraft needs to be pushed out of the berth by a tractor before leaving the port, and then rely on its own engine power to enter the runway. In order to make the airport operate more safely and efficiently, a new aircraft taxiing mode-towing and taxiing is explored, which does not require engine power. This mode relies on external power for the aircraft to move from launching the berth to the runway waiting for take-off while pilot controls the movement of the tractor, which ultimately, helps the airport to achieve efficient, green and economic operation goals. The nose landing gear is a key component in carrying the weight of the aircraft and realizing ground towing and taxiing, and its dynamic characteristics directly determine the high-speed towing and taxiing safety of the aircraft, which affects the subsequent flight safety and full life cycle of the structure. Therefore, it is necessary to study the mechanical behavior of the nose landing gear under the new generation of towing and taxiing methods. Taking the nose landing gear of a certain type of civil aviation aircraft as the research object, the dynamic characteristics and dynamic response behavior of the nose landing gear under heavy load and high-speed traction are studied. Likewise, the cushioning performance of the shock absorber struts and tractor tires is considered. The influence of the random road irregularity excitation on the response of nose landing gear is studied, and the dynamic response characteristics under different loads and towing speeds are obtained. The results show that the traction load plays a leading role in the vibration of the resistance arm during high-speed taxiing with full load. An important reference for the design of the nose landing gear under the new towing mode and the safe operation guarantee of the current aircraft can be provided.

Key words： nose landing gear; full-loaded high-speed; towing and taxiing; random response; dynamic characteristics

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