Accession Number:

ADA021344

Title:

An Analytic and Experimental Investigation of the Wakes Behind Flapped and Unflapped Wings

Descriptive Note:

Final rept.

Corporate Author:

AERONAUTICAL RESEARCH ASSOCIATES OF PRINCETON INC NJ

Personal Author(s):

• Bilanin, Alan J.
• Donaldson, Coleman duP.
• Snedeker, Richard S.

Report Date:

1974-09-01

Pagination or Media Count:

140.0

Abstract:

An analytic and experimental program was undertaken to define the near wake structure behind flapped and unflapped wings. The vortex wake structure is determined, given the wing lift and drag distributions with models developed in the spirit of Betz. A procedure to estimate the turbulent kinetic energy distribution in the vortex is also given, as well as a method to determine discrete vortex positions in the downstream wake.

Descriptors:

• *VORTICES
• *WAKE
• *AERODYNAMIC CONTROL SURFACES
• HAZARDS
• DISTRIBUTION
• KINETIC ENERGY
• AVIATION SAFETY
• WINGS
• FLAPS(CONTROL SURFACES)
• AERODYNAMIC FORCES
• ESTIMATES
• TURBULENT FLOW

Subject Categories:

• Aerodynamics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE