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http://dx.doi.org/10.5139/JKSAS.2003.31.7.069

Numerical Evaluation of Hovering Performance of Next Generation Rotor Blade(Nrsb-1)  

Lee,Gwan-Jung (한국항공우주연구원 회전익기연구그룹)
Hwang,Chang-Jeon (한국항공우주연구원 회전익기연구그룹)
Kim,Jae-Mu (한국항공우주연구원 회전익기연구그룹)
Ju,Jin (한국항공우주연구원 스마트무인기개발사업단)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.31, no.7, 2003 , pp. 69-74 More about this Journal
Abstract
By employing vane tip concept, a new rotor blade (NRSB-I) has been designed to enhance the noise characteristics of BERP blade. Numerical analyses have been performed for hovering rotor and the results are compared with respect to those of original BERP blade. Although the thrust of designed rotor decreases by 6-7% due to cutout at the tip region, the results indicate that the actual performance loss is negligible because power reduction is greater than thrust loss. It is also found that aerodynamic fence is required at the outboard kink to obtain clearly separated twin-vortices because the vortex generated at kink is diffused during the convection over the blade surface.
Keywords
Twin-Vortex; BERP blade; Next Generation Rotor Blade;
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  • Reference
1 Srinivasan, G. R., Baeder, J. D., Obayashi, S. and McCroskey, W. J., " Flowfield of a Lifting Rotor in Hover A Navier-Stokes Simulation", AlAA Journal, Vol.30, No.10, October 1992, pp.2371-2378
2 Nam, C. and Lee, D., " Navier-Stokes Calculation of Rotating BERP Planform Blade Flowfields", AIAA Applied Aerodynamics Conference, Montrey, CA, Aug. 9-11, 1993
3 Caradonna, F. X. and Tung, C, " Experimental and Analytical Studies of a Model Helicopter Rotor in Hover", NASA TM 81232
4 Agarwal, R. K. and Deese, J. E., " Euler Calculations for Flowfield of a Helicopter Rotor in Hover", Journal of Aircraft, Vol.24, No.4, April 1987, pp. 231 - 238   DOI   ScienceOn
5 Duque, E. P. N., " A Numerical Analysis of the British Experimental Rotor Program Blade", 45th Annual Forum of AHS, Boston, Mass., May 1989
6 Brocklehurst, A. and Duque, E. P. N.," Experimental and Numerical Study of the British Experimental Rotor Program Blade", AIAA-90-3008-CP
7 GKN-Westland Helicopter Seminar, Seminar No. 8, Vol. 5, Lecture 08-09-1
8 Hwang, C, Joo, G., Pike, A. C. and Perry, J., "Parametric Study for the Low BVI Noise BERP Blade - KBERP Design Using DEAF, 27th European Rotorcraft Forum, Moscow, Russia, Sep. 11-14, 2001
9 Brocklehurst, A. and Pike, A. C, " Prediction of BVI Noise Using a Vane Tip", AHS Aeromechanics Sepcialists Conference, San Francisco, USA, Jan. 19-21, 1994
10 Brocklehurst, A., " The Design and Wind Tunnel Testing of a Non-Rotating Blade with a Vane Tip ", AERO.TECH.NOTE GEN/124, Westland Pic, Helicopter Division
11 Srinivasan, G. R., Raghavan, V., Duque, E. P. N. and McCroskey, W. J.," Flowfield Analysis of Modern Helicopter Rotors in Hover by Navier-Stokes Method", Journal of AHS, Dec. 1993, pp.3-13