Accession Number:

AD0262232

Title:

EXPERIMENTAL PERFORMANCE OF TMB SUPERCAVITATING PROPELLERS 3767, 3768, 3769, 3770, 3785, AND 3820

Descriptive Note:

Corporate Author:

DAVID TAYLOR MODEL BASIN WASHINGTON D C

Personal Author(s):

Report Date:

1961-08-01

Pagination or Media Count:

20.0

Abstract:

Six TMB 3-bladed supercavitating propellers were tested for powering performance in the 24-inch variable pressure water tunnel at several cavitation indices over a range of speed coefficients. The thrust, torque, and rpm were measured with the 150-hp dynamometer. The water velocity during the tests was measured with a pitot tube mounted in the plane of the propeller blade centerline at a radial distance of ten in. from the shaft centerline. The pitot tube openings are connected to a mercury monometer allowing the average water speed to be measured within or 0.1 fps. The tunnel pressure is also measured by means of mercury monometers. A telescopic sight is provided for reading the mercury level. In this way the tunnel pressure can be maintained to within or - 0.01 psi. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE