Design Studies of Transonic and STOL Airfoils with Active Diffusion Control.

Abstract

Results of parametric design studies are presented for supercritical airfoils which employ active diffusion control. Efforts were concentrated on two basically different airfoil profiles. One type of airfoil has a 6% thickness to chord ratio and employs an antiseparation tailored contour (ATC) located in the forward, lower surface. This type of airfoil is considered to be a promising candidate for improving the transonic performance of combat aircraft. The second type of airfoil is 12% thick and has an ATC within the aft, upper surface. This type of wing section is applicable to transonic transports and is compatible with previous STOL designs which employ ATC's. Theoretical analyses indicate both airfoils have large values of the transonic cruise parameter, good transonic lift characteristics, and, in general, offer improved transonic performance.

Document Details

Document Type
Technical Report
Publication Date
Jun 19, 1974
Accession Number
ADA011928

Entities

People

  • B. T. Morland
  • C. H. Haight
  • T. D. Reed

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airfoils
  • Diffusion
  • Supercritical Airfoils
  • Thickness
  • Transport Ships
  • Vehicles

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Engineering
  • Systems Analysis and Design