An investigation has been conducted in the Langley 16-foot transonic tunnel to determine the effects of empennage surfaces on single-engine afterbody and nozzle drag at Mach numbers up to 1.20. Empennage interference drag was obtained by using experimental values of afterbody/nozzle drag and theoretical values of empennage drag. Three methods for minimizing adverse empennage interference effects were investigated. Results show that empennage interference effects were always detrimental but could be reduced by proper location of tail surfaces. Afterbody contouring and addition of 'contour' bumps were generally ineffective in reducing aft-end drag for Mach numbers less than 0.95.
Effect of empennage interference on single-engine afterbody/nozzle drag
American Institute of Aeronautics and Astronautics and Society of Automotive Engineers, Propulsion Conference ; 1975 ; Anaheim, CA
1975-09-01
Conference paper
No indication
English
Computational Analysis of Drag Reduction Techniques for Afterbody/Nozzle/Empennage Configurations
SAE Technical Papers | 1991
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