Accession Number:

ADA034018

Title:

Velocity Measurements on the Aerodynamic Wake of a Hovercraft Using Laser Doppler Anemometry.

Descriptive Note:

Technical note,

Corporate Author:

TORONTO UNIV (ONTARIO) INST FOR AEROSPACE STUDIES

Personal Author(s):

Report Date:

1976-06-01

Pagination or Media Count:

31.0

Abstract:

The laser Doppler technique has been applied to determine the aerodynamic wake velocity components behind a tethered air cushion vehicle ACV which runs close to a confining wall. Two velocity components were measured for a number of locations behind the vehicle, using the fringe mode and forward scattering from unseeded air. Some auxiliary forward and back scatter experiments with pulsed and D C lasers are also described. A video tape recorder was used to record all the laser Doppler data, which could then be processed by an oscilloscope, a spectrum analyzes or a DISA 55L signal processor. Results are presented which show that the stabilized wake effects are minimal for UTIAS ACV and its associated facility. Author

Subject Categories:

  • Surface Effect Vehicles and Amphibious Vehicles
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE