Mallick, Rajnish and Ganguli, Ranjan and Bhat, M. Seetharama (2015) Robust design of multiple trailing edge flaps for helicopter vibration reduction: A multi-objective bat algorithm approach. In: ENGINEERING OPTIMIZATION, 47 (9). pp. 1243-1263.
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The objective of this study is to determine an optimal trailing edge flap configuration and flap location to achieve minimum hub vibration levels and flap actuation power simultaneously. An aeroelastic analysis of a soft in-plane four-bladed rotor is performed in conjunction with optimal control. A second-order polynomial response surface based on an orthogonal array (OA) with 3-level design describes both the objectives adequately. Two new orthogonal arrays called MGB2P-OA and MGB4P-OA are proposed to generate nonlinear response surfaces with all interaction terms for two and four parameters, respectively. A multi-objective bat algorithm (MOBA) approach is used to obtain the optimal design point for the mutually conflicting objectives. MOBA is a recently developed nature-inspired metaheuristic optimization algorithm that is based on the echolocation behaviour of bats. It is found that MOBA inspired Pareto optimal trailing edge flap design reduces vibration levels by 73% and flap actuation power by 27% in comparison with the baseline design.
| Item Type: | Journal Article |
|---|---|
| Publication: | ENGINEERING OPTIMIZATION |
| Publisher: | TAYLOR & FRANCIS LTD |
| Additional Information: | Copy right for this article belongs to the TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND |
| Keywords: | multi-objective bat algorithm; helicopter vibration; Pareto optimal design; trailing edge flap; response surface |
| Department/Centre: | Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) |
| Date Deposited: | 06 Jul 2015 05:52 |
| Last Modified: | 06 Jul 2015 05:52 |
| URI: | http://eprints.iisc.ac.in/id/eprint/51799 |
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