Garipova, L. I., Batrakov, A. S., Kusyumov, A. N., Mikhailov, S. A. and Barakos, G. (2016) Aerodynamic and acoustic analysis of helicopter main rotor blade tips in hover. International Journal of Numerical Methods for Heat and Fluid Flow, 26(7), pp. 2101-2118. (doi: 10.1108/HFF-08-2015-0348)
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116240.pdf - Accepted Version 2MB |
Abstract
Purpose: The design of main rotor blade tips is of interest to helicopter manufactures since the tip details affect the performance and acoustics of the rotor. The paper aims to discuss this issue. Design/methodology/approach: In this paper, computation fluid dynamics is used to simulate the flow around hovering helicopter blades with different tip designs. For each type of blade tip a parametric study on the shape is also conducted for comparison calculations were performed the constant rotor thrust condition. The collective pitch and the cone angles of the blades were determined by at an iterative trimming process. Findings: Analysis of the distributed blade loads shows that the tip geometry has a significant influence on aerodynamics and aeroacoustics especially for stations where blade loading is high. Originality/value: The aeroacoustic characteristics of the rotors were obtained using Ffowcs Williams-Hawkings equations.
| Item Type: | Articles |
|---|---|
| Additional Information: | This work was supported by the “State tasks in the field of scientific activity” (No 9.1694.2014/REFERENCES K) Grant. |
| Keywords: | CFD, Ffowcs Williams - Hawkings equation, helicopter, main rotor, blade design |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Barakos, Professor George |
| Authors: | Garipova, L. I., Batrakov, A. S., Kusyumov, A. N., Mikhailov, S. A., and Barakos, G. |
| College/School: | College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
| Journal Name: | International Journal of Numerical Methods for Heat and Fluid Flow |
| Publisher: | Emerald |
| ISSN: | 0961-5539 |
| ISSN (Online): | 1758-6585 |
| Published Online: | 12 September 2016 |
| Copyright Holders: | Copyright © 2016 Emerald Group Publishing Limited |
| First Published: | First published in International Journal of Numerical Methods for Heat and Fluid Flow 26(7):2101-2118 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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