Results 61 to 70 of about 117 (97)
Some of the next articles are maybe not open access.
Stagnation Temperature Control in Blowdown Wind Tunnels
Journal of the Aerospace Sciences, 1958J. S. MURPHY +2 more
exaly +2 more sources
Pressure Fluctuations in a Blowdown Wind Tunnel
Journal of the Aerospace Sciences, 1959exaly +2 more sources
Supersonic Blowdown Wind Tunnel Control Using LabVIEW
46th AIAA Aerospace Sciences Meeting and Exhibit, 2008A computer-based, proportional-integral control system for supersonic blowdown wind tunnels was developed in a LabVIEW environment. The control algorithm is based on numerically integrating the differential equations used to model a supersonic blowdown wind tunnel in which the proportional and integral control terms were added and tuned in a simulation
Eric Braun +5 more
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Applications of infrared thermography in a hypersonic blowdown wind tunnel
International Congress on Instrumentation in Aerospace Simulation Facilitie, 2003The authors describe special applications of infrared imaging for the measurement of the surface temperature distribution on models exposed to a hypersonic flow field. A number of infrared images are shown, which demonstrate the advantages and limitations of this measurement technique. In connection with image processing of an IBM computer the infrared
A. Henckels, F. Maurer
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Application of a Blowdown Wind Tunnel for Liugc- Scale Acoustic Environmental Testing
Journal of Occupational and Environmental Medicine, 1961A unique application of a blowdown wind tunnel for intense noise testing of large components or of entire vehicles will be described. The above facility, which is primarily used for thermal structures testing, has a 12-ft diam exhaust jet which generates an extensive noise field useful for test purposes.
William H. Mayes, Philip M. Edge
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Diagnostic simulation of a pneumatically controlled blowdown wind tunnel
SIMULATION, 1973The nonlinear differential equations required to correctly model the plenum pressure history of a pneumatically controlled blowdown wind tunnel are derived,and arguments in favor of digital simulation of the full nonlinear equations as opposed to conven tional linearized analysis are presented.
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Prediction of internal and external noise fields for blowdown wind tunnels
Society of Naval Architects and Marine Engineers, and U.S. Navy, Advanced Marine Vehicles Meeting, 1972Empirical methods have been developed to estimate the test section noise levels and the outside noise radiation patterns of blowdown wind tunnels. Included are considerations of noise generation by control valves, burners, turbulent boundary layers, and exhaust jets as appropriate.
R. HOSIER, W. MAYES
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Methods for investigating supersonic ground effect in a blowdown wind tunnel
Shock Waves, 2008Two methods to experimentally investigate supersonic ground effect problems in a wind tunnel have been examined to determine their relative effectiveness compared to a more realistic, but physically unfeasible, representation of the ground effect by means of a moving ground. Experimental data were compared with the results of numerical simulations. The
G. C. Doig +4 more
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Modification of a Transonic Blowdown Wind Tunnel to Produce Oscillating Freestream Mach Number
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010This paper details the design, construction, and evaluation of a modification to Ohio State’s 6” × 22” Transonic Wind Tunnel to enable modulation of the freestream Mach number. The test section Mach number in this blowdown facility is dynamically set by varying the choke area in a harmonic fashion.
Kyle Gompertz +5 more
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Basic Experiments on a Cryogenic Wind Tunnel of Flashing-Blowdown Type
1996This paper deals with the experimental approach to a new concept of cryogenic wind tunnel of short duration. In the last two decades various closed-cycle and continuous operation (CCCO) cryogenic wind tunnels have been developed and they have shown many advantages for high Reynolds number experiments.
K. Maeno +3 more
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