Accession Number : ADA182664

Title :   A Trade-Off Study of Sonar Performance and Powering Requirements for Unconventional Sonar Domes.

Descriptive Note : Final rept. 1986-1987,

Corporate Author : NAVAL ACADEMY ANNAPOLIS MD

Personal Author(s) : Culbertson,Jennifer

PDF Url : ADA182664

Report Date : 19 May 1987

Pagination or Media Count : 83

Abstract : The results of an investigation of the resistance characteristics and powering requirements of unconventional sonar domes are presented and discussed. The sonar dome designs evaluated were below-baseline domes incorporating long prismatic sections designed to house large planar passive arrays. The cross-sectional area, and the longitudinal length of the domes were systematically varied. The predicted powering requirements for a parent destroyer hull form appended with different designs of sonar domes were compared to the relative improvements in sonar capabilities that each dome design could offer. These changes in powering requirements were translated to fuel costs to provide a basis for an economic trade-off analysis. Hull form design was done with Fastship computer-aided inter-active software available at the U.S. Naval Academy's Hydromechanics Laboratory. Powering predictions were made by using the Ship Resistance Prediction Method flow code to numerically evaluate wave resistance. The results from this investigation follow trends similar to recent series studies of above-baseline bow bulbs. If the U.S. Navy places priority on improving its hull mounted sonars, then the economic trade-off for using a large, unconventional sonar dome warrants further investigation.

Descriptors :   *SONAR DOMES, COMPUTER AIDED DESIGN, NAVAL VESSELS, COMPUTER APPLICATIONS, COMPUTER PROGRAMS, COSTS, CROSS SECTIONS, DOMES(STRUCTURAL FORMS), ECONOMIC ANALYSIS, FUELS, INTERACTIONS, LENGTH, PERFORMANCE(ENGINEERING), PRISMATIC BODIES, RESISTANCE, SONAR, TRADE OFF ANALYSIS, WAVES

Subject Categories : Acoustic Detection and Detectors
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE