Accession Number:

AD0915309

Title:

Aerodynamic Loads on Advanced Fighter Aircraft.

Descriptive Note:

Technical rept. 22 Sep 72-15 Apr 73,

Corporate Author:

DOUGLAS AIRCRAFT CO LONG BEACH CA AIRCRAFT DIV

Personal Author(s):

• Giesing, Joseph P.
• Kalman, Terez P.

Report Date:

1973-10-01

Pagination or Media Count:

96.0

Abstract:

A study was conducted to obtain the effects of various configuration idealizations on the subsonic airloads of a twin vertical tail fighter aircraft. Particular attention has been given to the empennage since this is usually the critical region for flutter. The configurations considered are 1 the stabilator alone with a symmetry plane at its root, 2 the stabilator and fins alone, 3 the stabilator, fin and several fuselage lengths, 4 the entire aircraft and 5 a flat plate representation of the fuselage. Three reduced frequencies were considered 0.0, 0.5, 1.0 and two Mach numbers 0.0 and 0.9. The results are analyzed and the implications for flutter discussed.

Descriptors:

• *TAILS(AIRCRAFT)
• *FLUTTER
• LIFTING SURFACES
• ROLL
• FUSELAGES
• LENGTH
• VERTICAL ORIENTATION
• EXTERNAL STORES
• ASPECT RATIO
• INTERFERENCE
• MACH NUMBER
• COMPUTER PROGRAMS
• OSCILLATION
• AIRCRAFT MODELS

Subject Categories:

• Attack and Fighter Aircraft
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE