Accession Number:

ADA278265

Title:

On the Kernel Function of the Integral Equation Relating the Lift and Downwash Distributions of Oscillating Finite Wings in Subsonic Flow

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CENTER

Personal Author(s):

• Watkins, Charles E.
• Runyan, Harry L.
• Woolston, Donald S.

Report Date:

1955-01-01

Pagination or Media Count:

18.0

Abstract:

This report treats the kernel function of an integral equation that relates a known or prescribed downwash distribution to an unknown lift distribution for a harmonically oscillating finite wing in compressible subsonic flow. The kernel function is reduced to a form that can be accurately evaluated by separating the kernel function into two parts a part in which the singularities are isolated and analytically expressed and a nonsingular part which may be tabulated. The form of the kernel function for the sonic case Mach number of 1 is treated separately. In addition, results for the special cases of Mach number 0 incompressible case and frequency of 0 steady case are given

Descriptors:

• *KERNEL FUNCTIONS
• *SUBSONIC FLOW
• TWO DIMENSIONAL
• THREE DIMENSIONAL
• BOUNDARY VALUE PROBLEMS
• DOWNWASH
• AERODYNAMIC CONTROL SURFACES
• WING BODY CONFIGURATIONS
• CLEAR AIR TURBULENCE
• COMPRESSIBLE FLOW
• NUMERICAL ANALYSIS

Subject Categories:

• Aerodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE