한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2011년도 추계학술대회 논문집
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- Pages.236-241
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- 2011
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- 1598-2548(pISSN)
Detailed Design of an Active Rotor Blade for Reducing Helicopter Vibratory Loads
- Natarajan, Balakumaran (School of Mechanical and Aerospace Engineering, Seoul National University) ;
- Eun, Won-Jong (School of Mechanical and Aerospace Engineering, Seoul National University) ;
- Shin, Sang-Joon (School of Mechanical and Aerospace Engineering, Seoul National University)
- 발행 : 2011.10.27
초록
An active trailing-edge flap blade named as Seoul National University Flap (SNUF) blade is designed for reducing helicopter vibratory loads and the relevant aeroacoustic noise. Unlike the conventional rotor control, which is restricted to 1/rev frequency, an active control device like the present trailing-edge flap is capable of actuating each individual blade at higher harmonic frequencies i.e., higher harmonic control (HHC) of rotor. The proposed blade is a small scale blade and rotates at higher RPM. The flap actuation components are located inside the blade and additional structures are included for reinforcement. Initially, the blade cross-section design is determined. The aerodynamic loads are predicted using a comprehensive rotorcraft analysis code. The structural integrity of the active blade is verified using a stress-strain recovery analysis.