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This paper addresses the issue of Aircraft Pilot Coupling (APC) vibrations in civil aircraft, providing a detailed explanation through examples. It describes the typical phenomena of Aircraft Pilot Coupling vibrations and thoroughly analyzes the conditions under which these vibrations occur. Proposed that lacking of stability or unstable of the pilot control loop is the essence of the APC vibration problem. A ground test was designed, and through the experiment, a pilot model suitable for the analysis of civil aircraft Aircraft Pilot Coupling vibrations was obtained. Based on the analysis of Aircraft Pilot Coupling characteristics, a vibration suppression scheme was proposed, and its effectiveness was demonstrated through flight tests.

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Civil Aircraft Aircraft Pilot Coupling Vibration Analysis and Practice

  • 会议论文

  • 发表日期：

    2026年

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  • Luning Ding

摘要

This paper addresses the issue of Aircraft Pilot Coupling (APC) vibrations in civil aircraft, providing a detailed explanation through examples. It describes the typical phenomena of Aircraft Pilot Coupling vibrations and thoroughly analyzes the conditions under which these vibrations occur. Proposed that lacking of stability or unstable of the pilot control loop is the essence of the APC vibration problem. A ground test was designed, and through the experiment, a pilot model suitable for the analysis of civil aircraft Aircraft Pilot Coupling vibrations was obtained. Based on the analysis of Aircraft Pilot Coupling characteristics, a vibration suppression scheme was proposed, and its effectiveness was demonstrated through flight tests.