Accession Number : AD0700692

Title :   WATER TUNNEL TESTING FOR SUPERCAVITATING PROPELLERS-MEASURING VELOCITY,

Corporate Author : NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER WASHINGTON D C

Personal Author(s) : McDonald,N. A. ; Hecker,R.

Report Date : NOV 1969

Pagination or Media Count : 29

Abstract : Techniques for testing fully cavitating propellers in water tunnels were investigated. Four methods for measuring tunnel velocity were used, and results from tunnel tests of two geometrically similar, fully cavitating propellers are compared with results from high-speed open-water tests. Comparison shows the importance of making sound corrections for tunnel wall effects. The velocity-measuring techniques discussed may, in part, acomplish this. (Author)

Descriptors :   (*PROPELLERS(MARINE), TEST METHODS), (*CAVITATION, PROPELLERS(MARINE)), (*WATER TUNNELS, VELOCITY), CORRECTIONS, WALLS, MEASUREMENT, MODEL TESTS

Subject Categories : Marine Engineering
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE