Accession Number : AD0769506

Title :   External Aerodynamics of Surface Effect Vehicles.

Descriptive Note : Research rept.,

Corporate Author : NAVAL ACADEMY ANNAPOLIS MD

Personal Author(s) : Fishman,Robert E.

Report Date : 21 MAY 1973

Pagination or Media Count : 88

Abstract : The speeds of surface effect vehicles are of the order of one hundred knots. At these speeds aerodynamic forces become significant necessitating an understanding of the craft external aerodynamics. In order to predict external flow phenomenon about a hovercraft a discrete vortex model was applied to the problem. This model was programmed and run on a Honeywell 635 computer. A corresponding experimental model was designed, fabricated, and tested. The results of the experimental programme and those obtained from the analytical computer study were then compared. It appears that the discrete vortex model is an effective means of representing the external aerodynamics of surface effect vehicles provided that sufficient computer space is available. (Author)

Descriptors :   (*Surface effect vehicles, Aerodynamics), Vortices, Air cushion vehicles, Flat plate models, Lift, Jet flaps, Computerized simulation, Wind tunnel models

Subject Categories : Surface Effect Vehicles & Amphibious Vehicles

Distribution Statement : APPROVED FOR PUBLIC RELEASE