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http://dx.doi.org/10.5139/JKSAS.2013.41.6.495

Ground Vibration Test for Korean Utility Helicopter  

Kim, Se-Hee (Korea Aerospace Industries)
Kwak, Dong-Il (Korea Aerospace Industries)
Jung, Se-Un (Korea Aerospace Industries)
Choi, Jong-Ho (Korea Aerospace Industries)
Kim, Joung-Hun (Defense Agency for Technology and Quality)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.41, no.6, 2013 , pp. 495-501 More about this Journal
Abstract
Korean Utility Helicopter (KUH) has been designed to avoid the blade passing frequency and any instability due to a coupling of dynamic characteristics between the main rotor and the airframe in ground operation. For these design objectives, the vibration analysis and the ground resonance analysis were performed to analyze the dynamic characteristics of the airframe and the main rotor. Then, the whirl-tower test was conducted to identify the dynamic characteristics of the main rotor and the ground vibration test (GVT) was conducted to identify the dynamic characteristics of the airframe. The GVT for KUH was conducted with the test conditions and test articles established in consideration of each flight and ground condition. This paper shows the method and technique for performing the GVT for KUH and presents the correlation technique and the results for the correlated analysis model.
Keywords
Korean Utility Helicopter; Blade Passing Frequency; Ground Resonance; Whirl-Tower Test; Ground Vibration Test; Correlation Technique;
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  • Reference
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