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Preliminary Study on Development of Length-Variable Rotor Blade for Unmanned Helicopter  

Chun, Ju-Hong (Department of Aerospace Engineering, Pusan National Univ.)
Byun, Young-Seop (Department of Aerospace Engineering, Pusan National Univ.)
Lee, Byoung-Eon (Department of Aerospace Engineering, Pusan National Univ.)
Song, Woo-Jin (Department of Industrial Liaison Innovation Center, Pusan National Univ.)
Kim, Jeong (Department of Aerospace Engineering, Pusan National Univ.)
Kang, Beom-Soo (Department of Aerospace Engineering, Pusan National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.27, no.3, 2010 , pp. 73-79 More about this Journal
Abstract
A preliminary study on a length-variable rotor blade for a small unmanned helicopter has been conducted. After surveys on previous researches, and examining requirements for application to a small unmanned helicopter, a length-variable rotor blade was designed and manufactured to be driven by centrifugal force from rotor revolution with no mechanical actuator. The rotor blade was divided into a fixed inboard section and an outboard section sliding in span-wise direction. In order to determine the operating conditions of the length-variable rotor during revolution, and to derive the design variables of extension spring and rotor weight, a series of analyses from multi-body dynamics solution were conducted. The manufactured prototype was verified of its length-varying mechanism from a rotor stand, the results and required future improvements are discussed.
Keywords
Length-variable Rotor Blade; Multi-body Dynamics; UAV-UGV Teaming Operation; Centrifugal Force;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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