日本航空宇宙学会論文集
Online ISSN : 2432-3691
Print ISSN : 1344-6460
ISSN-L : 1344-6460
論文
前進飛行時のヘリコプタ・ロータのワール不安定現象
中山 周一山田 克彦軸屋 一郎
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2015 年 63 巻 2 号 p. 60-67

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Helicopter rotor instability coupled with its support structure in forward flight is investigated. The linearized equations of hub and blade motions around the rotor periodic trim conditions are obtained, and the system instability is evaluated based on the Floquet theorem. By taking account of blade pitch angle variations due to hub motions, simulation results show that instability similar to the SH-60K case occurs at high speed condition, and predicted stability boundaries show the fair agreement with the SH-60K flight test results.

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© 2015 The Japan Society for Aeronautical and Space Sciences
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