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http://dx.doi.org/10.5139/JKSAS.2005.33.1.033

Installation Design of FLIR Sensor Considering Dynamic Characteristics of Helicopter Airframe  

Cho, Ki-Dae (국방과학연구소)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.1, 2005 , pp. 33-38 More about this Journal
Abstract
Forcing at the rotor blade passing frequencies is responsible for the majority of vibration related problems on helicopters. Blade passing frequencies of helicopters are generally in the range 10~30 Hz and the interest modes of the helicopters also exist in the range. By the way, the installation of a heavy sensor at the front extremities of an imported helicopter may change the modal characteristics of the airframe and results in the resonance with rotor passing frequencies. To avoid too large a change in the dynamics of the overall airframe, we determined how to install a heavy sensor through conceptual approach and finite element analysis. The results of a ground vibration test for airframe with sensor mount system clearly demonstrate that the installation design is acceptable dynamically.
Keywords
FLIR(Forward Looking InfraRed); Rotor blade passing frequency; Soft mount with isolator;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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