Download or read book Effect of Convergent Ejector Nozzles on the Boattail Drag of a 16 Conical Afterbody at Mach Number of 0 6 to 1 26 written by James M. Cubbage and published by . This book was released on 1958 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Convergent Ejector Nozzles on the Boattail Drag of a 16 Degree Conical Afterbody at Mach Numbers of 0 6 to 1 26 written by James M. Jr Cubbage and published by . This book was released on 1958 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to NASA Technical Publications written by United States. National Aeronautics and Space Administration and published by . This book was released on 1960-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Aerothermodynamics of Aircraft Gas Turbine Engines written by and published by . This book was released on 1978 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Fineness Ratio on Boattail Drag of Circular arc Afterbodies Having Closure Ratios of 0 50 with Jet Exhaust at Mach Numbers Up to 1 30 written by David E. Reubush and published by . This book was released on 1973 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was conducted to determine the effect of fineness ratio on the drag of circular-arc boattails at subsonic and low supersonic speeds. The boattails had closure ratios of 0.50 and incorporated convergent nozzles. The investigation was conducted statically and at Mach numbers from 0.40 to 1.30 at 0 deg angle of attack with jet total-pressure ratios varying from jet off to about 6, depending on Mach number. Low-fineness-ratio boattails had large separated-flow regions and the highest drag at all Mach numbers. Subsonic pressure-plus-friction drag levels were generally similar for boattails which did not have large separated regions. Drag-rise Mach number increased as boattail fineness ratio increased.
Download or read book Effects of Fineness and Closure Ratios on Boattail Drag of Circular arc Afterbody Models with Jet Exhaust at Mach Numbers Up to 1 3 written by David E. Reubush and published by . This book was released on 1973 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of variations in fineness ratio and closure ratio on the boattail drag of circular-arc afterbody models were investigated at static conditions and at Mach numbers from 0.40 to 1.30. Jet total-pressure ratio was varied from jet off to about 6, depending on Mach number. Reynolds number based on model maximum diameter varied from about 1.2 million to 2.18 million. Angle of attack was varied from -4 deg to 8 deg. The results indicate that, at subsonic speeds before the drag rise and at a scheduled pressure ratio, the total drag (pressure plus calculated skin friction) is approximately equal for configurations with the same closure ratio. Also, for configurations with the same closure ratio, increasing fineness ratio results in an increased drag-rise Mach number; and for configurations with the same fineness ratio, increasing closure ratio results in an increased drag-rise Mach number.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1962 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Boattailing on the Drag Coefficient of Cone cylinder Projectiles at Supersonic Velocities written by Elizabeth R. Dickinson and published by . This book was released on 1954 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jet Effects on the Boattail Axial Force of Conical Afterbodies at Subsonic and Transonic Speeds written by and published by . This book was released on 1970 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An experimental and analytical investigation of the effect on isolated boattail drag of varying Reynolds number up to 130 x 106 written by David E. Reubush and published by . This book was released on 1976 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Free flight Investigation of the Effects of Simulated Sonic Turbojet Exhaust on the Drag of a Boattail Body with Various Jet Sizes from Mach Number 0 87 to 1 50 written by Ralph A. Falanga and published by . This book was released on 1955 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three 7.5 degree boattail bodies of revolution with varying base-annulus areas and jet sizes provided with simulated-turbojet-exhaust rocket motors were flight-tested to determine the jet interference effects on drag over a Mach number range from approximately 0.87 to 1.5. The results indicated that in the transonic and low-supersonic speed range the jet caused positive pressure increments on the base and boattail which appreciably reduced the configuration drag from the power-off condition. At the high supersonic speeds, the jet caused positive pressure increments only on the base and resulted in a smaller reduction in body drag from power-off conditions.
Download or read book Effect of Fineness and Closure Ratios on Boattail Drag of Circular arc Afterbody Models with Jet Exhaust at Mach Number Up to 1 3 written by David E. Reubush and published by . This book was released on 1973 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parametric Study of Afterbody nozzle Drag on Twin Two dimensional Convergent divergent Nozzles at Mach Numbers from 0 60 to 1 20 written by and published by . This book was released on 1986 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book External Drag of Multijet Exit Configuration with and Without Base Flow at Mach Numbers from 2 0 to 3 0 written by and published by . This book was released on 1960 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Reynolds number on the subsonic boattail drag of several wing body configurations written by David E. Reubush and published by . This book was released on 1976 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jet Effects on the Drag of Conical Afterbodies for Mach Numbers of 0 6 to 1 28 written by James M. Jr Cubbage and published by . This book was released on 1957 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigaion of Boattail Geometry and Reynolds Number Effects on Forebody and Afterbody Drag at Transonic Mach Numbers written by and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was conducted in the AEDC 16-foot Transonic Wind Tunnel (16T) to determine both Reynolds number and nozzle afterbody configuration effects on model forebody and afterbody drag. The model was a sting-mounted body of revolution with interchangeable contoured, cylindrical, and 15-deg boattail configurations. Pressure and force data were obtained at Mach numbers from 0.60 to 1.40 and at unit Reynolds numbers from 1,470,000 per foot to 5,300,000 per foot. The experimental results showed that large variations in afterbody drag levels produced no significant change in forebody drag. The data also revealed that all three configurations exhibited little or no Reynolds number dependence subsonically and that only the 15-deg boattail afterbody was affected by Reynolds number supersonically. It was also demonstrated that data precision and wind tunnel calibration can have a significant effect on model drag and should be given careful consideration. (Author).
