Title :
Vortical flow field investigation using a two-component pressure sensitive paint at low speed
Author :
Mérienne, M.C. ; Bouvier, F.
Author_Institution :
DAFE, ONERA, Chatillon, France
fDate :
6/21/1905 12:00:00 AM
Abstract :
A two-component pressure sensitive paint has been designed to perform wind tunnel tests in low speed flow. In order to increase the measurement accuracy, the sources of errors have been reduced by using a low temperature sensitive paint. Furthermore, this PSP allows to measure the variations of the excitation light between wind-on and wind-off images by means of the second component, insensitive to pressure. The PSP is applied on an non-instrumented delta wing model and pressure data are obtained by using separate calibration on small samples of paint. PSP images present some defects of non-uniformity due to a problem with the paint itself. Pressure fields are obtained from 50 down to 24 m/s. Comparison between measurements obtained with pressure taps and PSP results on separated tests shows a significant shift due to the paint calibration
Keywords :
aircraft testing; flow visualisation; optical sensors; photoluminescence; pressure measurement; pressure sensors; radiation quenching; vortices; wind tunnels; binary paint; delta wing model; low speed flow; low temperature sensitive paint; measurement accuracy; nonuniformity defects; oxygen quenching; paint calibration; pressure fields; pressure sensor; reduced error sources; surface pressure measurement; two-component pressure sensitive paint; vortical flow field; wind tunnel tests; wind-off images; wind-on images; Aerodynamics; Calibration; Luminescence; Paints; Performance evaluation; Pressure measurement; Resins; Temperature sensors; Testing; Virtual manufacturing;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1999. ICIASF 99. 18th International Congress on
Conference_Location :
Toulouse
Print_ISBN :
0-7803-5715-9
DOI :
10.1109/ICIASF.1999.827159
