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Characteristics of Pressure Sensitive Paint Intrusiveness Effects on Aerodynamic DataOne effect of using pressure sensitive paint (PSP) is the potential intrusiveness to the aerodynamic characteristics of the model. The paint thickness and roughness may affect the pressure distribution, and therefore, the forces and moments on the wind tunnel model. A study of these potential intrusive effects was carried out at NASA Langley Research Center where a series of wind tunnel tests were conducted using the Modem Design of Experiments (MDOE) test approach. The PSP effects on the integrated forces were measured on two different models at different test conditions in both the Low Turbulence Pressure Tunnel (LTPT) and the Unitary Plan Wind Tunnel (UPWT) at Langley. The paint effect was found to be very small over a range of Reynolds numbers, Mach numbers and angles of attack. This is due to the very low surface roughness of the painted surface. The surface roughness, after applying the NASA Langley developed PSP, was lower than that of the clean wing. However, the PSP coating had a localized effects on the pressure taps, which leads to an appreciable decrease in the pressure tap reading.
Document ID
20010004100
Acquisition Source
Langley Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Amer, Tahani R.
(NASA Langley Research Center Hampton, VA United States)
Liu, Tianshu
(NASA Langley Research Center Hampton, VA United States)
Oglesby, Donald M.
(Science and Technology Corp. Hampton, VA United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2001
Subject Category
Nonmetallic Materials
Report/Patent Number
AIAA Paper 2001-0556
Meeting Information
Meeting: Aerospace Sciences
Location: Reno, NV
Country: United States
Start Date: January 8, 2001
End Date: January 11, 2001
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Public Use Permitted.
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