Results 51 to 60 of about 117 (97)

High-Reynolds-Number Turbulence Database: AeroFlowData. [PDF]

Sci Data
Zhang W, Shan X, Liu Y, Zhang X, Wan Z, Li X, Sha X, Zhao J, Xu H, He C, Liu Y, Xia Z, Li W, Gao L, Jin X, Li H, Liao F, Zhang Y, Chen G.   +18 more
europepmc   +1 more source

Monitoring of Sulfur Mustard (HD) Vapor in the Presence of Absorptive Building Materials. [PDF]

ACS Omega
Oudejans L, See D.
europepmc   +1 more source

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Pressure-Sensitive Paint Measurements in a Blowdown Wind Tunnel

Journal of Aircraft, 2005
A methodology to correct for temperature effects on pressure-sensitive paint data in a blowdown wind tunnel has been suggested. PSP measurements using Optrod-B1 paint were made on an aircraft model instrumented with thermocouples and conventional pressure taps.
P R Viswanath
exaly   +2 more sources

Transonic Flow Quality Improvements in a Blowdown Wind Tunnel

Journal of Aircraft, 1973
The development and evaluation of a new type of flow conditioning system between the control valve and stilling chamber of the Vought Systems Division 4 X 4-ft transonic-supersonic wind tunnel are reported. The new system results in a series of normal shocks created by four perforated plates to dissipate total pressure differences between the reservoir
James M. Cooksey, John W. Arnold
exaly   +2 more sources

Stagnation Pressure Transient Control in a Supersonic Blowdown Wind Tunnel Test Facility

Materials Today: Proceedings, 2016
Abstract Research in the area of wind tunnel flow parameters control has been intensified in recent years, in an attempt to improve quality and efficiency of the wind tunnel operation. In this paper, stagnation pressure transient control in a supersonic blowdown-type wind tunnel is considered, with the aim of increasing available measurement time and
Mirko Milosavljevic, Marko Milos, Biljana Ilić   +2 more
exaly   +3 more sources

Cascade nonlinear feedforward-feedback control of stagnation pressure in a supersonic blowdown wind tunnel

Measurement: Journal of the International Measurement Confederation, 2017
Abstract Current trends in the development of control systems involve disproportionately high costs for embedded software integration and testing techniques that rely almost exclusively on exhaustive testing of more or less complete versions of complex systems. Wind tunnel control systems are not an exception. A formal methodology for supersonic flow
Marko Milos, Biljana Ilić, Jovan Isakovic   +2 more
exaly   +3 more sources

Some problems in design and operation of blowdown wind tunnels

Zeitschrift Fur Angewandte Mathematik Und Physik, 1958
On rapporte sur la construction et la performance d'un modele de 12,5 cm×12,5 cm d'une soufflerie a rafale. En particulier, on discute les resultats experimentaux sur le controle de la temperature et pression d'arret, la stabilisation de la veine dans la chambre de tranquillisation et la performance d'un diffuseur reglable utilise aux nombres deMach ...
exaly   +2 more sources

Advanced Flow Control for Supersonic Blowdown Wind Tunnel Using Extended Kalman Filter

Journal of Dynamic Systems, Measurement, and Control, 2013
Supersonic blowdown wind tunnels provide controlled test environments for aerodynamic research on scaled models. During the experiments, the stagnation pressure in the test section is required to remain constant. Due to nonlinearity and distributed characteristics of the controlled system, a robust controller with effective flow control algorithms is ...
Jiaqi Xi, Qiang Zhang, Mian Li, Zhaoguang Wang   +3 more
exaly   +2 more sources

Model sting support with hard metal core for measurement in the blowdown pressurized wind tunnel

Measurement: Journal of the International Measurement Confederation, 2016
Abstract The wind tunnel model, balance and sting are exposed to the large transient load in the blowdown wind tunnels. As part of the research, in order to improve wind tunnel testing, a new high stiffness sting for testing in the T-38 wind tunnel is developed.
Dušan Ćurčić, Marija Samardžić, Dragan Marinkovski, Zoran Rajić, Zoran Anastasijević   +4 more
exaly   +2 more sources

Flow Quality Improvements in a Blowdown Wind Tunnel

Journal of Aircraft, 2001
Rajan Kumar
exaly   +2 more sources