大型水陆两栖飞机起落架静强度适航符合性验证试验技术

  • 李三元 ,
  • 李琛 ,
  • 陈先民 ,
  • 陆冠 ,
  • 刘崇任 ,
  • 折世强 ,
  • 姜建文
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  • 1. 强度与结构完整性全国重点实验室
    2. 中国飞机强度研究所
    3. 中国飞机强度研究所 强度与结构完整性全国重点实验室
    4. 航空工业一飞院
    5. 中航通飞华南飞机工业有限公司
    6. 中航飞机起落架有限责任公司

收稿日期: 2026-03-02

  修回日期: 2026-06-16

  网络出版日期: 2026-06-26

Static Strength Airworthiness Compliance Verification Test Technology for Large Amphibious Aircraft Landing Gear

  • LI San-Yuan ,
  • LI Chen ,
  • CHEN Xian-Min ,
  • LU Guan ,
  • LIU Chong-Ren ,
  • ZHE Shi-Qiang ,
  • JIANG Jian-Wen
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Received date: 2026-03-02

  Revised date: 2026-06-16

  Online published: 2026-06-26

摘要

起落架静强度试验是民用运输类飞机适航取证的必要环节。AG600大型水陆两栖飞机主起落架采用超静定高支柱独特构型,具有承载高、变形大、传载复杂、加载与测量空间受限等特点,试验实施难度大。本文依据CCAR?25?R4静强度适航条款要求,结合AG600主起落架静强度适航符合性验证工程实践,系统梳理了起落架静强度试验的适航管理流程、制造符合性检查要点及试验内容与程序;提出缓冲器压缩量精准调控、大变形结构精准加载、狭小空间垂向高载施加、狭小遮挡区域位移测量及试验风险防控五项关键技术,有效解决了复杂三维超静定大变形起落架试验精准加载与测量技术难题。经中国民用航空局(CAAC)全程审查,AG600主起落架静强度符合运输类飞机适航标准要求。本文形成的起落架静强度适航验证技术,可为我国大型民用飞机起落架静强度适航符合性验证提供工程借鉴。

本文引用格式

李三元 , 李琛 , 陈先民 , 陆冠 , 刘崇任 , 折世强 , 姜建文 . 大型水陆两栖飞机起落架静强度适航符合性验证试验技术[J]. 航空学报, 0 : 1 -0 . DOI: 10.7527/S1000-6893.2026.33526

Abstract

Landing gear static strength test is an essential procedure for the airworthiness certification of civil transport aircraft. The main landing gear of the AG600 large amphibious aircraft adopts a unique statically indeterminate high-strut configuration, which is characterized by high bearing capacity, large structural deformation, complex load transfer, and limited space for loading and measurement, resulting in great difficulties in test implementation. According to the static strength airworthiness provisions of CCAR?25?R4 and combined with the engineering practice of static strength airworthiness compliance verifica-tion for the AG600 main landing gear, this paper systematically sorts out the airworthiness management process, manufactur-ing compliance inspection key points, and test contents and procedures of landing gear static strength tests. Five key technol-ogies, including precise adjustment of buffer compression, accurate loading of large-deformation structures, vertical high-load application in narrow spaces, displacement measurement in occluded narrow spaces, and test risk prevention and con-trol, are proposed to effectively solve the technical difficulties in precise loading and measurement for complex three-dimensional statically indeterminate landing gears with large deformation. With the full-process review by the Civil Aviation Administration of China (CAAC), the static strength of the AG600 main landing gear meets the airworthiness standard re-quirements for transport aircraft. The landing gear static strength airworthiness verification technology formed in this paper can provide engineering references for the static strength airworthiness compliance verification of landing gears and similar structures of large civil aircraft in China.

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