Propulsion characteristics of a non-sinusoidally heaving airfoil

Sarkar, S and Venkatraman, K (2005) Propulsion characteristics of a non-sinusoidally heaving airfoil. In: 35th AIAA Fluid Dynamics Conference and Exhibit, 06 - 09 June 2005, Toronto, Ontario, Canada.

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Abstract

The present study is an analysis of the propulsive performance of a non-sinusoidally heaving airfoil. These are compared with equivalent sinusoidal motions. The propulsive characteristics are observed in terms of qualitative study of the wake pattern, calculation of the thrust force and propulsive efficiency as well as the lift force. Three such motions are considered. One is the asymmetric sinusoid which is a sinusoid excepting that the downstroke is faster/slower than the upstroke. The second type of motion considered is the constant heave rate in the upstroke and downstroke resulting in a triangular waveform. The third and final type of motion studied is the sinusoidal pulse train. Of these three, the asymmetric sinusoidal motion gives the most thrust and propulsive efficiency. d.

Item Type:	Conference Paper
Publication:	35th AIAA Fluid Dynamics Conference and Exhibit
Publisher:	American Institute of Aeronautics and Astronautics Inc.
Additional Information:	cited By 0; Conference of 35th AIAA Fluid Dynamics Conference and Exhibit ; Conference Date: 6 June 2005 Through 9 June 2005; Conference Code:99746
Keywords:	Airfoils; Efficiency, Propulsion characteristics; Propulsive efficiencies; Propulsive performance; Qualitative study; Sinusoidal pulse; Thrust forces; Triangular waveform; Wake patterns, Flight dynamics
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	05 Oct 2020 06:31
Last Modified:	05 Oct 2020 06:31
URI:	http://eprints.iisc.ac.in/id/eprint/65837

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