Accession Number : AD0701785

Title :   A PRELIMINARY STUDY OF THE APPLICATION OF SPINNING MODE THEORY TO THE SUBMERSIBLE VEHICLE PROPELLER,

Corporate Author : MASSACHUSETTS UNIV AMHERST SCHOOL OF ENGINEERING

Personal Author(s) : Webster,W. J.

Report Date : OCT 1969

Pagination or Media Count : 22

Abstract : By enclosing the propeller of a submersible vehicle in a rigid cylindrical duct it is possible to exercise control over the discrete frequency noise produced. The applicable portions of spinning mode theory are reviewed and its application to submersible vehicles is illustrated with numerical examples. (Author)

Descriptors :   (*UNDERWATER VEHICLES, *SHROUDED PROPELLERS), (*PROPELLER NOISE, ATTENUATION), PROPELLERS(MARINE), CYLINDRICAL BODIES, DUCTED BODIES, NOISE, PROPAGATION, PRESSURE, HARMONIC ANALYSIS, NUMERICAL ANALYSIS

Subject Categories : Marine Engineering
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE