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Predicting Propulsion Related Drag of Jet Aftbodies
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1975 by SAE International in United States
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Two propulsion related drag correlation parameters have been developed. Existing or planned parametric jet aftbody drag data can therefore be reduced into a simple prediction technique for aircraft preliminary design studies. The drag due to the external nozzle geometry correlates with the average slope of the aftbody's area distribution (Integral Mean Slope), and the drag influence of the internal nozzle geometry/exhaust plume correlates with an effective plume inclination angle (Plume Correlation Parameter). The propulsion related drags of single, twin, and two-dimensional jet installations, and convergent, convergent-divergent, and plug nozzles are shown to correlate with the two parameters. An example of the prediction system utilization is also presented.
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CitationHerrick, P., "Predicting Propulsion Related Drag of Jet Aftbodies," SAE Technical Paper 751088, 1975, https://doi.org/10.4271/751088.
- Reubush D. E. “The Effect of Reynolds Number on Boattail Drag.” Paper AIAA 75-63 AIAA 13th Aerospace Sciences Meeting Pasadena, California January 1975
- Haynie W.D. “Boattail Drag at Subsonic and Supersonic Speeds.” Pratt & Whitney Aircraft SMR FR-2992 October 1968
- Epler W. E. “Prediction of Boattail Drag Coefficients at Subsonic Speeds.” Pratt & Whitney Aircraft SMR FR-3674 March 1970
- Herrick P. W. “Twin-Jet Fighter Installed Nozzle Performance - A General Prediction Technique.” Pratt & Whitney Aircraft SMR FR-3110 January 1969
- Whitcomb R. T. “A Study of the Zero-Lift Drag-Rise Characteristics of Wing-Body Combinations Near the Speed of Sound.” NACA Report No. 1273 1956
- Wynosky T. A. Spurrell R. M. “Final Progress Report Exhaust System Interaction Program.” Pratt & Whitney Aircraft FR-4745 June 1973
- “Exhaust System Interaction Program Handbook.” April 1973
- Stevens H. L. “Boattail Drag of Two-Dimensional Nozzle/Afterbodies.” Pratt & Whitney Aircraft SMR FR-7002 May 1975
- Bergman D. “Effects of Engine Exhaust Flow on Boattail Drag.” Paper AIAA 70-132 AIAA 8th Aerospace Sciences Meeting January 1970
- Sicks T. H. Herrick P. W. “A Transonic Drag Prediction Technique for Isolated Nozzles with Arbitrary Boattail and Exhaust Plume Geometries.” Pratt & Whitney Aircraft SMR FR-5453 December 1972
- Harrington D. E. “Jet Effects on Boattail Pressure Drag of Isolated Ejector Nozzles at Mach Numbers from 0.6 to 1.47.” NASA Report TM X-1785 1969
- Robinson C. E. High M. D. “Exhaust Plume Temperature Effects on Nozzle Afterbody Performance Over the Transonic Mach Number Range.” AEDC Report TR-74-9 July 1974