Open Access

ABSTRACT

A Preliminary Design on the Second Generation Integral Twist-Actuated Blade

Jae-Sang Park¹, SangJoon Shin²

1 Post doctoral researcher, Seoul National Univ., KOREA, E-mail: tux2000@snu.ac.kr
2 Assistant Professor, Seoul National Univ., KOREA, E-mail: ssjoon@snu.ac.kr

The International Conference on Computational & Experimental Engineering and Sciences 2007, 4(4), 265-270. https://doi.org/10.3970/icces.2007.004.265

Abstract

This paper presents the preliminary design effort of a brand new integral twist-actuated blade incorporating single crystal piezoelectric fiber composites. Although the previous integral twist-actuated blade was able to reduce the vibration and acoustic noise of rotorcrafts significantly, a quite high input-voltage was unavoidably required. Therefore, in this paper, it is suggested to develop a new active blade using single crystal piezoelectric composites to reduce the vibration and acoustic noise of helicopters more efficiently. For the preliminary design of a new blade, the characteristics of the sectional properties and the twist actuation frequency responses in hover are investigated in terms of the active region magnitude.

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