Accession Number:

AD0912061

Title:

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

Descriptive Note:

Final rept.

Corporate Author:

ARO INC ARNOLD AFS TN

Personal Author(s):

Report Date:

1971-12-01

Pagination or Media Count:

133.0

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.

Subject Categories:

  • Aerodynamics
  • Bombers
  • Attack and Fighter Aircraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE