航空工程进展
航空工程進展
항공공정진전
ADVANCES IN AERONAUTICAL SCIENCE AND ENGINEERING
2012年
4期
453-456,504
,共5页
起落架%缓冲器%落震试验%动态特性%载荷系数
起落架%緩遲器%落震試驗%動態特性%載荷繫數
기락가%완충기%락진시험%동태특성%재하계수
landing gear%shock absorber%drop test%dynamic characteristics%load factor
起落架是飞机的重要组成部件，起落架缓冲器的设计好坏必须经过落震试验的验证。2001年5月9日FAA颁布的N0．25-103修正案对起落架落震试验要求进行了修订。本文对该修正案提出的原因进行说明，并以修正案的内容为基础，与CCAR-25-R3版进行详细地对比和影响分析；通过对起落架动态特性的解析，提出起落架落震试验修正案的验证思路。结果表明：落震试验方法没有本质变化，但是对于试验目的提出了更为严格的要求。研究结果可为起落架落震试验的验证提供一定的技术参考。
起落架是飛機的重要組成部件，起落架緩遲器的設計好壞必鬚經過落震試驗的驗證。2001年5月9日FAA頒佈的N0．25-103脩正案對起落架落震試驗要求進行瞭脩訂。本文對該脩正案提齣的原因進行說明，併以脩正案的內容為基礎，與CCAR-25-R3版進行詳細地對比和影響分析；通過對起落架動態特性的解析，提齣起落架落震試驗脩正案的驗證思路。結果錶明：落震試驗方法沒有本質變化，但是對于試驗目的提齣瞭更為嚴格的要求。研究結果可為起落架落震試驗的驗證提供一定的技術參攷。
기락가시비궤적중요조성부건，기락가완충기적설계호배필수경과락진시험적험증。2001년5월9일FAA반포적N0．25-103수정안대기락가락진시험요구진행료수정。본문대해수정안제출적원인진행설명，병이수정안적내용위기출，여CCAR-25-R3판진행상세지대비화영향분석；통과대기락가동태특성적해석，제출기락가락진시험수정안적험증사로。결과표명：락진시험방법몰유본질변화，단시대우시험목적제출료경위엄격적요구。연구결과가위기락가락진시험적험증제공일정적기술삼고。
Landing Gear is one of the most important components of the aircraft. The design of the landing gear shock absorber has to be validated by drop tests. FAA issued the Amendment No. 25-103 to revise landing gear drop test requirements in May 9, 2001. The reason of issuing this amendment is described in this paper. Based on the content of the amendment, a careful comparison and analysis between the amendment and CCAR-25 Re- vision R3 are made. Through the analysis of the landing gear dynamic characteristic, certification approach for drop test is presented. The investigation results show that the there is no any essential difference for the drop test method, but more critical requirement has been made for the test purpose. This investigation can be a use ful reference for the landing gear drop test certification.
