Accession Number:

ADA048968

Title:

Doublet Lattice Aerodynamic Predictions for an Oscillating F-5 Wing with Stores.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1977-12-01

Pagination or Media Count:

99.0

Abstract:

The Doublet Lattice Method with the Method of Images was used to predict Unsteady Aerodynamic Coefficients and Pressures on a Model F-5 Wing with various store configurations, oscillating in subsonic flow. Various finite element lattice configurations were tested to obtain numerical convergence and indicate the optimum modelling technique. Test conditions included Mach numbers of .6, .8, .9 and .95. At each Mach number, oscillation frequencies of 0, 20 Hz, and 45 Hz were considered. Convergence studies confirmed the utility and accuracy of Multhopp or sinusoidal lattice distributions. Steady state pressure predictions compared favorably to those obtained by Woodwards Method. Predictions showed significant increases in aerodynamic forces caused by adding tip stores to the wing. Author

Subject Categories:

  • Aircraft
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE