Effect of Nozzle Lateral Spacing on Afterbody Drag and Performance of Twin-jet Afterbody Models with Cone Plug Nozzles at Mach Numbers Up to 2.20 PDF Download
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Author: Bobby L. Berrier
Publisher:
ISBN:
Category :
Languages : en
Pages : 131
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Author: Bobby L. Berrier
Publisher:
ISBN:
Category :
Languages : en
Pages : 131
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Author: Odis C. Jr Pendergraft
Publisher:
ISBN:
Category :
Languages : en
Pages : 123
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Author: Donald L. Maiden
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
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Author: Bobby L. Berrier
Publisher:
ISBN:
Category :
Languages : en
Pages : 142
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Author: Bobbly Lee Berrier
Publisher:
ISBN:
Category : Drag (Aerodynamics)
Languages : en
Pages : 84
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Author: C. E. Robinson
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 98
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Results of an experimental and analytical research investigation on nozzle/afterbody drag are presented. Experimental afterbody (and boattail) drag coefficients and pressure distributions are discussed for an isolated, strut-mounted nozzle/afterbody model for the Mach number range from 0.6 to 1.5. Some data are also given for free-stream unit Reynolds numbers from one million to approximately four million per foot. The experimental data were obtained for the basic model with an air-cooled and a water-cooled Ethylene/air combustor to provide hot-jet duplication as well as cold-jet simulation. The temperature of the nozzle exhaust gas was varied from 530R (burner-off) to approximately 2500R for several nozzle pressure ratios from jet-off to those corresponding to a moderately under-expanded exhaust plum. The initial series of experiments was conducted with the air-cooled combustors, and the effect of jet temperature on afterbody drag was somewhat masked by the effects of the secondary airflow from the cooling air. The general trend, however, shows a decreasing afterbody drag with increasing exhaust gas temperature and with decreasing secondary airflow at a fixed nozzle pressure ratio. (Modified author abstract).
Author: Jack F. Runckel
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 52
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Author: James M. Cubbage
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ISBN:
Category : Cone
Languages : en
Pages : 38
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Author: Harry T. Norton
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Author: Edwin E. Lee (Jr.)
Publisher:
ISBN:
Category : Interference (Aeronautics)
Languages : en
Pages : 164
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