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Abstract <p>This paper is devoted to analyzing ground resonance phenomenon inherent in a light helicopter of a pine-shaped design, characterized by two pairs of blades rotating in opposite directions around the same axis. A single-seat MICRON-type helicopter, developed by Russian designers, has been used as a basis. By using Bogolyubov’s averaging method, the potentialities of resonance onset have been demonstrated and instability regions have been found.</p>

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Ground Resonance Inherent in a Coaxial Helicopter

  • 期刊论文

  • 发表日期：

    2026年4月5日

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  • A. V. Zvyagin,
  • L. E. Ukrainskii

摘要

Abstract

This paper is devoted to analyzing ground resonance phenomenon inherent in a light helicopter of a pine-shaped design, characterized by two pairs of blades rotating in opposite directions around the same axis. A single-seat MICRON-type helicopter, developed by Russian designers, has been used as a basis. By using Bogolyubov’s averaging method, the potentialities of resonance onset have been demonstrated and instability regions have been found.