Sting Interference Effects As Determined By Measurements Of Dynamic Stability Derivatives Surface Pressure And Base Pressure For Mach Numbers 2 Through 8
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Sting Interference Effects As Determined By Measurements Of Dynamic Stability Derivatives Surface Pressure And Base Pressure For Mach Numbers 2 Through 8
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Author : Bob L. Uselton
language : en
Publisher:
Release Date : 1980
Sting Interference Effects As Determined By Measurements Of Dynamic Stability Derivatives Surface Pressure And Base Pressure For Mach Numbers 2 Through 8 written by Bob L. Uselton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Hypersonic wind tunnels categories.
Wind tunnel tests were conducted to provide support interference information for planning and directing wind tunnel tests at supersonic and hypersonic Mach numbers. Sting-length and sting-diameter effects on base and surface pressures of a blunt 6-deg cone with a sliced base were investigated at Mach numbers 2, 3, 5, and 8. Dynamic stability tests on a blunt 7-deg cone were also conducted at Mach numbers 2, 5, and 8. The objectives of the 7-deg cone tests were to define critical sting lengths as determined by the measurement of dynamic stability derivatives, static pitching moment, and base pressure. Two frequencies of oscillation were investigated, and data were obtained for laminar, transitional, and turbulent boundary-layer conditions at the model base. The data from the 6- and 7-deg cone tests showed that the critical sting length depended on the interference indicator, Mach number, angle of attack, state of the model boundary layer, and frequency of oscillation. The critical sting length was generally less for models with turbulent boundary layers than for those with laminar boundary layers. A critical sting length of 2.5 model diameters was determined to be suitable for all test conditions that produced a turbulent boundary layer at or ahead of the model base.
Sting Interference Effects On The Modified Basic Finner Missile At Mach Numbers 0 3 Through 1 3
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Author : Edward J. Marquart
language : en
Publisher:
Release Date : 1982
Sting Interference Effects On The Modified Basic Finner Missile At Mach Numbers 0 3 Through 1 3 written by Edward J. Marquart and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Ballistic missiles categories.
Evaluation Of Critical Sting Length On A 7 Deg Cone As Determined By Measurements Of Dynamic Stability Derivatives And Base Pressure For Mach Numbers 0 2 Through 1 3
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Author : Frederick B. Cyran
language : en
Publisher:
Release Date : 1981
Evaluation Of Critical Sting Length On A 7 Deg Cone As Determined By Measurements Of Dynamic Stability Derivatives And Base Pressure For Mach Numbers 0 2 Through 1 3 written by Frederick B. Cyran and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Boundary layer categories.
Wind tunnel tests were conducted to provide sting-support interference information for planning and directing wind tunnel tests at subsonic and transonic Mach numbers. Sting-length effects on dynamic stability derivatives, static pitching moment, and base pressure of a blunt, flat-base 7- deg cone were investigated at Mach numbers 0.2 to 1.3 in the Arnold Engineering Development Center (AEDC) Propulsion Wind Tunnel Facility (PWT). Two frequencies of oscillation, nominally 5.3 and 2.9 Hz, were investigated. The boundary-layer state at the model base was turbulent for all Mach numbers greater than 0.2. The interference effects of two types of model-wake splitter plates were also investigated. The results showed that the critical sting length depended on the Mach number, angle of attack, and type of data used as the interference indicator. A critical sting length of three model diameters was determined to be suitable for all test conditions for the ratio of sting-diameter-to-model-base- diameter (0.22) for this test.
Nasa Technical Memorandum
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Author :
language : en
Publisher:
Release Date : 1980
Nasa Technical Memorandum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Aeronautics categories.
An Investigation Of Sting Interference Effects On An Oscillating Cone In Transonic Flow
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Author : Frederick B. Cyran
language : en
Publisher:
Release Date : 1981
An Investigation Of Sting Interference Effects On An Oscillating Cone In Transonic Flow written by Frederick B. Cyran and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Aerodynamics, Transonic categories.
Wind tunnel sting support interference effects on dynamic stability derivatives, static pitching moment and base pressure of a blunt, 7-deg cone were investigated at subsonic and transonic Mach numbers. The cone was tested with sting configurations having a variable effective sting length ranging from 1 to 3.3 model base diameters, at angles of attack ranging from 0 to 30 deg. A forced-oscillation system was utilized to obtain data at a frequency of oscillation of approximately 5.3 Hz, and at an amplitude of 1 deg. The Reynolds number, based on model base diameter, was nominally 1.8 million, which produced a turbulent boundary layer over the aft portion of the model. The nature of the causes of these interference effects is discussed and analyzed with respect to sting length, type of measurement, and Mach number, with emphasis on defining critical sting length and on predicting minimal interference sting configurations for dynamic stability testing. The results showed that the critical sting length depended on the type of measurement used as the interference indicator, Mach number, and angle of attack. A critical sting length of three model diameters was determined to be suitable for all test conditions for the ratio of sting diameter-to-model base diameter (0.22) investigated. (Author).
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1987
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
A Review And Development Of Correlations For Base Pressure And Base Heating In Supersonic Flow
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Author : J. Parker Lamb
language : en
Publisher:
Release Date : 1993
A Review And Development Of Correlations For Base Pressure And Base Heating In Supersonic Flow written by J. Parker Lamb and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aerodynamic heating categories.
A comprehensive review of experimental base pressure and base heating data related to supersonic and hypersonic flight vehicles has been completed. Particular attention was paid to free-flight data as well as wind tunnel data for models without rear sting support. Using theoretically based correlation parameters, a series of internally consistent, empirical prediction equations has been developed for planar and axisymmetric geometries (wedges, cones, and cylinders). These equations encompass the speed range from low supersonic to hypersonic flow and laminar and turbulent forebody boundary layers. A wide range of cone and wedge angles and cone bluntness ratios was included in the data base used to develop the correlations. The present investigation also included preliminary studies of the effect of angle of attack and specific-heat ratio of the gas.
Technical Abstract Bulletin
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Author :
language : en
Publisher:
Release Date : 1968
Technical Abstract Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Science categories.
Support Interference Of Wind Tunnel Models
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Author : Marie H. Tuttle
language : en
Publisher:
Release Date : 1981
Support Interference Of Wind Tunnel Models written by Marie H. Tuttle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Aeronautics categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1981
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Science categories.