Accession Number : AD0426536

Title :   SWIMMING HINGED HYDROFOILS,

Corporate Author : NAVAL ORDNANCE TEST STATION CHINA LAKE CALIF

Personal Author(s) : Kelly,Howard R. ; Bowlus,Glenn H.

Report Date : DEC 1963

Pagination or Media Count : 66

Abstract : Lift, drag, and power input were measured on three configurations of a small, symmetrical hydrofoil that was mechanically oscillated in a two-dimensional water flow. The tests included oscillations of different amplitudes in combined heaving and pitching of the rigid, single-hinged, and double-hinged hydrofoils, and simple oscil lations (waving) of the hinged hydrofoils with one point fixed. The drag coefficients (posi tive and negative) are compared with Wu's theory of swimming hydrofoils. The Wu theory can suc cessfully predict the thrust of an oscillating hydrofoil, whether it is rigid or hinged. (Author)

Descriptors :   (*HYDROFOILS, SWIMMING), (*OS, HYDROFOILS), (*HYDRODYNAMICS, HYDROFOILS), (*PROPULSION SYSTEMS, OSCILLATION), LIFT, DRAG, MODEL TESTS, DRIVES, MATHEMATICAL ANALY, MODEL BASINS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE