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Measurements on fully wetted and ventilated ring wing hydrofoils

Acosta, A. J. and Bate, E. R., Jr. and Kiceniuk, T. (1965) Measurements on fully wetted and ventilated ring wing hydrofoils. California Institute of Technology , Pasadena, CA. (Unpublished)

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Force measurements and visual observations were made in a water tunnel on fully wetted and ventilated flows past a family of conical ring wings having a flat plate section geometry. The diameter-chord ratio was varied from one to three, and the total included cone angle was 12 degrees. The fully wetted flows all exhibited separation from the leading edge except for the largest diameter-chord ratio, a result which was in agreement with previous work. The effect of ventilation is to reduce markedly the lift curve slope. Pressure distribution measurements were also made under ventilating conditions for one member of this series. The effect of ventilation over only a portion of the circumference of the ring was also briefly investigated. Large cross forces were developed by such ventilation and some comparisons are made between this method of obtaining control forces and more conventional methods.

Item Type:Report or Paper (Technical Report)
Additional Information:Department of the Navy, Bureau of Naval Weapons, Fluid Mechanics and Flight Dynamics Branch, Contract Nonr 220(54) The authors would like to acknowledge the help of the laboratory staff and would especially like to mention the efforts of Messrs. L. Whitcanack, W. Wilson, C. Eastvedt in carrying out the experiments; Mrs. L. Gaard in reducing the data; and Mrs. P. Henderson for preparation of the report.
Group:Hydrodynamics Laboratory
Record Number:CaltechAUTHORS:ACOhydrolabrptE-138-1
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6055
Deposited By: Archive Administrator
Deposited On:16 Nov 2006
Last Modified:02 Oct 2019 23:29

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