Aerodynamic Characteristics of A 0.12-Scale Model of the A-9A Aircraft at Mach Numbers from 0.30 to 0.80

Abstract

Wind tunnel tests were conducted at Mach numbers from 0.30 to 0.80 and Reynolds numbers from 2.3 to 7.0 million on a 0.12-scale model of the A-9A aircraft to determine the effects of control surface deflections on the aerodynamic characteristics of the airplane. The results showed that the horizontal stabilizer was 20 to 50 percent more effective in pitching moment per degree of deflection than the elevator, the rudder remained effective at all Mach numbers, and the aileron deflections produced significant effects on lift, drag, and pitching and rolling moment. Minimum drag was increased by approximately 100 and 600 percent for speed brake deflections of 20 and 60 deg, respectively, at Mach numbers from 0.70 to 0.80.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1971
Accession Number
AD0912061

Entities

People

  • Warren E. White

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Air Force
  • Aircrafts
  • Control Surfaces
  • Deflection
  • Governments
  • Horizontal Stabilizers
  • Mach Number
  • Measurement
  • Models
  • Reynolds Number
  • Scale Models
  • Surfaces
  • Test And Evaluation
  • Test Facilities
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Cardiovascular Physiology