Accession Number:

AD0679360

Title:

USE OF VORTICES IN CALCULATION OF BOTTOM PRESSURES OF ANNULAR JET GROUND EFFECT MACHINES.

Descriptive Note:

Engineering research rept.,

Corporate Author:

GENERAL DYNAMICS/CONVAIR SAN DIEGO CALIF

Personal Author(s):

Report Date:

1961-03-01

Pagination or Media Count:

46.0

Abstract:

An engineering procedure is suggested for estimating the pressure distribution on the bottom of a stationary ground effect machine of the annular-jet-type. The flow field under the machine was assumed to consist of a core of more or less uniform vorticity separated from the cavity boundaries by a viscous layer. For estimation of pressure on the bottom of the vehicle the core could be approximated under some circumstances by a simple distribution of vortices halfway between the vehicle and the ground empirical relations for the placement and strength of these vortices were based upon available model test data. Author

Subject Categories:

  • Aerodynamics
  • Surface Effect Vehicles and Amphibious Vehicles
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE