Accession Number : AD0277918

Title :   LOW DRAG SUPERCAVITATING HYDROFOIL SECTIONS

Descriptive Note : Technical rept.,

Corporate Author : HYDRONAUTICS INC LAUREL MD

Personal Author(s) : AUSLAENDER,JAKOB

Report Date : APR 1962

Pagination or Media Count : 1

Abstract : The existing theory and experimental information on the design and performance of two-dimensional, low-drag, supercavitating and fully ventilated hydrofoils are reviewed. The results of detailed calculations based on linearized cavity flow theory (neglecting gavity) at zero cavitation number are presented in the form of lift-cavity drag ratio vs. lift coefficient and non-dimensional bending modulus vs. lift coefficient of low-drag foils designed specifically for operation at depths of 1/2, 1, 2, and 5 chords, as well as infinite depth. The design of foils for arbitrary depths, including methods of interpolation between depths for which detailed plots are available is described. The necessary non-linear corrections and the effect of finite cavitation number are evaluated. The theory is in good agreement with experimental information found in the literature. (Author)

Descriptors :   DRAG, HYDRODYNAMICS, LIFT

Distribution Statement : APPROVED FOR PUBLIC RELEASE