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The downlock spring of the aircraft is a key component that can achieve the function of lowered locked position of the landing gear. In the design process, it is necessary to consider its position relationship with the lock link mechanism and the influence of the retraction load. This article discusses the scenarios that need to be considered in the design of downlock spring, introduces a novel spring design process and method, and provides an example to complete the design and calculation process of the downlock spring for a certain aircraft.

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Design and Analysis Method of Downlock Spring for Landing Gear of a Certain Aircraft

  • 会议论文

  • 发表日期：

    2025年

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  • Ziyang Song,
  • Kuan Wang

摘要

The downlock spring of the aircraft is a key component that can achieve the function of lowered locked position of the landing gear. In the design process, it is necessary to consider its position relationship with the lock link mechanism and the influence of the retraction load. This article discusses the scenarios that need to be considered in the design of downlock spring, introduces a novel spring design process and method, and provides an example to complete the design and calculation process of the downlock spring for a certain aircraft.