Abstract
This paper presents experimental results of a fully-clamped compliant panel interacting with a Mach 3 turbulent boundary layer, including characterization of both the aerodynamic and structural behavior. Analysis focuses upon the aerodynamic response to the wall motion, including assessments of wall pressure response over and downstream of the panel. Multiple regimes of panel deformation were investigated, including small-scale (< 100μm) vibrations and a large-amplitude (~ 1mm) snap-through event. Infrared thermometry, high-speed digital image correlation, and high-speed pressure sensitive paint were performed simultaneously, using the measured wall temperature to correct for temperature sensitivity of the pressure sensitive paint. The experimental results indicate strong correlation between the local panel deflection and the corresponding wall pressure response, though this relationship is no longer observable approximately one boundary layer thickness downstream. The paper concludes by demonstrating a laser-based radiant heating approach to improve stability of the compliant panel temperature during short facility runtimes.
| Original language | English |
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| Title of host publication | AIAA SciTech Forum and Exposition, 2024 |
| Publisher | American Institute of Aeronautics and Astronautics Inc, AIAA |
| ISBN (Print) | 9781624107115 |
| DOIs | |
| State | Published - 2024 |
| Externally published | Yes |
| Event | AIAA SciTech Forum and Exposition, 2024 - Orlando, United States Duration: Jan 8 2024 → Jan 12 2024 |
Publication series
| Name | AIAA SciTech Forum and Exposition, 2024 |
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Conference
| Conference | AIAA SciTech Forum and Exposition, 2024 |
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| Country/Territory | United States |
| City | Orlando |
| Period | 01/8/24 → 01/12/24 |
Funding
The authors gratefully acknowledge and appreciate the assistance of Prof. Earl Dowell (Duke University) and his then-student Dr. Maxim Freydin in their assistance with identifying the target run conditions. The assistance of Prof. Venkat Narayanaswamy (North Carolina State University) and his then-students Chase Jenquin and Ethan Johnson is appreciated for loaning their Photron camera. The process for assembling the panels was developed with the assistance of Will Boles (Air Force Research Laboratory). We also appreciate the assistance of Carl Hall (Arnold Engineering Development Complex) and Jordan Thayer (Ohio State University) in improving the IR processing workflow. This work was funded by the High-Speed Aerodynamics portfolio of AFOSR, monitored by Dr. Sarah Popkin.