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http://dx.doi.org/10.5139/JKSAS.2010.38.5.482

Ground Vibration Tests of SmartUAV Airframe Structure  

Jeon, Byoung-Hee (국방과학연구소)
Kang, Hui-Won (국방과학연구소)
Lee, Jung-Jin (한국항공우주연구원)
Lee, Young-Shin (충남대학교 기계설계공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.38, no.5, 2010 , pp. 482-489 More about this Journal
Abstract
This paper describes the test procedure, instrumentation, verification methodology and the results of the ground vibration test(GVT) and force vibration test(FVT) of the SmartUAV aircraft to estimate experimentally dynamic characteristics of the aircraft. Bungee cords are used to emulate free-free boundary conditions of the test aircraft. The SmartUAV is excited by three shakers and one-hundred frequency response functions(FRF's) is measured. The FRF's are reduced and analyzed to identify the dynamics parameters of the SmartUAV. To extract modal parameters of the SmartUAV such as, natural frequencies and damping ratios, the poly-reference least square complex exponential method is used in the time domain. The mode shape coefficients are estimated with the least squares frequency domain method to identify the vibration modes. The FVT was performed by fixed sine frequency with three shakers on the x, y and z direction and vibration characteristics of structures and detail equipments are measured.
Keywords
SmartUAV; Ground Vibration Test(GVT); Force Vibration Test(FVT); Natural Frequency; Mode Shape;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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