Accession Number : AD0282181

Title :   WINDMILLING AND LOCKED SHAFT PERFORMANCE OF SUPERCAVITATING PROPELLERS,

Corporate Author : DAVID TAYLOR MODEL BASIN WASHINGTON D C

Personal Author(s) : Hecker,Richard

Report Date : JUL 1962

Pagination or Media Count : 26

Abstract : Open-water tests of several supercavitating propellers windmilling and nonrotating are presented. The tests are all at high cavitation indices. The windmilling operation is shown to be an extension of the powered performance at high speed coefficients. Both the thrust and torque are negative in this area of operation. Locked shaft (nonrotating) data are presented and the thrust and torque are shown to be dependent upon the size of the propeller and its projected area, but more or less independent of section shape. Judicious use of airfoil data confirms these results. (Author)

Descriptors :   (*CAVITATION), (*PROPELLER BLADES), (*MARINE PROPELLERS), TORQUE, THRUST, ROTATION, AIRFOILS, WATER, SHAFTS(MACHINE ELEMENTS)

Distribution Statement : APPROVED FOR PUBLIC RELEASE