Accession Number : AD1006241

Title :   Control of Supercavitating Vehicles using Transverse Jets

Descriptive Note : Technical Report,15 Jun 2013,15 Dec 2015

Corporate Author : California State University - Northridge, Mechanical Engineering Department Northridge United States

Personal Author(s) : Ayers , Bradley ; Johari,Hamid

Full Text :

Report Date : 15 Mar 2016

Pagination or Media Count : 53

Abstract : The primary objective of this experimental study was to investigate the effects of high freestream velocity and an upstream ventilated cavity on the loads generated by a zero-net-mass-flux thruster operating in an aqueous environment. In the absence of freestream flow, averaged thrust increased linearly with frequency, up to a limit imposed by the hardware response time. A simple model was developed that predicts thrust to scale linearly with operating frequency and expelled fluid slug stroke ratio. Thrust decreased with increasing crossflow velocity, and this decrease was linear for the range of frequencies less than or equal to 16 Hz. Thruster performance was diminished when a ventilated cavity was present.

Descriptors :   underwater vehicles , marine thrusters , maneuvers , experimental design , free stream

Subject Categories : Marine Engineering
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE