起落架落震试验的测试误差控制方法研究
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- 英文论文题名：Control Method of Measurement Error in Landing Gear Drop Test
- 论文作者：任佳 ; 杨建波 ; 牟让科
- 英文论文作者：Ren Jia ; Yang Jianbo ; Mu Rangke ; Aeroplane Strength Research Institute of China
- 年：2016
- 作者机构：中国飞机强度研究所;
- 论文关键词：起落架 ; 落震试验 ; 减缩功量法 ; 功量计算 ; 测试误差
- 英文论文关键词：landing gear ; drop test ; reduced quality ; energy calculation ; measurement error
- 会议召开时间：2016-10-31
- 会议录名称：探索 创新 交流（第7集）——第七届中国航空学会青年科技论坛文集（下册）
- 英文会议录名称：Discovery,Innovation and Communication——Proceedings of 7th CSAA Science and Technology Youth Forum
- 语种：中文
- 分类号：V226
- 学会代码：ZGHU
- 会议名称：探索 创新 交流（第7集）——第七届中国航空学会青年科技论坛
- 会议地点：中国广东中山
- 主办单位：中国航空学会
- 学会名称：中国航空学会
- 页数：6
- 文件大小：850k
- 原文格式：O
- 会议级别：全国
摘要
在验证起落架缓冲性能时,多采用"减缩质量法"的试验方法进行落震试验,在现阶段落震试验调试中,存在测试误差过大的现象。在说明落震试验中相关功量和误差定义的基础上,对试验的相关误差进行分析,零点偏移和位移传感器安装位置不当会造成测试功量的误差,投放功量的计算方法会造成投放功量的计算值与理论值不符,这是造成测试误差的主要原因。随后,文中提出了投放功量的改进计算方法,并提出在摩擦轮带转时应采用末端加载。通过试验数据表明以上的方法可以有效控制测试误差。
The method of equivalent energy is used a lot in drop test to verify the cushioning performance of landing gear.And in debugging test now,the problem of large measurement error is difficult to be resolved.In this article,theoretical energy,measurement energy,drop energy and errors between them are described at beginning,then,some errors in typical test are analyzed to find the reasons.Errors of measurement energy come from zero offset and unapt location of displacement sensors,method of calculating drop energy has the defect to cause error between theoretical values and calculated ones.These are main reasons cause the measurement error.The important part is improved method to calculating drop energy proposed here.Then,using the end of rotating mechanism actuator is effective to solve the problems.Some existing data is used to show these improve ways is effective to control measurement error.
The method of equivalent energy is used a lot in drop test to verify the cushioning performance of landing gear.And in debugging test now,the problem of large measurement error is difficult to be resolved.In this article,theoretical energy,measurement energy,drop energy and errors between them are described at beginning,then,some errors in typical test are analyzed to find the reasons.Errors of measurement energy come from zero offset and unapt location of displacement sensors,method of calculating drop energy has the defect to cause error between theoretical values and calculated ones.These are main reasons cause the measurement error.The important part is improved method to calculating drop energy proposed here.Then,using the end of rotating mechanism actuator is effective to solve the problems.Some existing data is used to show these improve ways is effective to control measurement error.
引文
[1]中国飞机强度研究所.航空结构强度技术[M].北京:航空工业出版社,2013:142-143.
[2]齐丕骞,史惟琦,戚志民,等.起落架落震试验中的仿升动力模拟[J].机械科学与技术.2002,21(11):36-37.
[3]王凤山.飞机结构强度试验实用指南[M].西安:中国飞机强度研究所.2007:175-176.
[4]GJB67A-2008.军用飞机结构强度规范[S].
[5]焦振江.飞机起落架动态性能仿真分析研究[D].西安:西北工业大学。2007.
[6]刘向尧,聂宏,魏小辉.大型民机起落架着陆性能仿真分析与优化设计[J].科学技术与工程,2010,24(10):6103-6108.
[7]刘锐琛,苏开鑫.飞机起落架强度设计指南[M].成都:四川科学技术出版社,1989:24-25.
[2]齐丕骞,史惟琦,戚志民,等.起落架落震试验中的仿升动力模拟[J].机械科学与技术.2002,21(11):36-37.
[3]王凤山.飞机结构强度试验实用指南[M].西安:中国飞机强度研究所.2007:175-176.
[4]GJB67A-2008.军用飞机结构强度规范[S].
[5]焦振江.飞机起落架动态性能仿真分析研究[D].西安:西北工业大学。2007.
[6]刘向尧,聂宏,魏小辉.大型民机起落架着陆性能仿真分析与优化设计[J].科学技术与工程,2010,24(10):6103-6108.
[7]刘锐琛,苏开鑫.飞机起落架强度设计指南[M].成都:四川科学技术出版社,1989:24-25.