Time-resolved velocity measurement system for the study of gusts
Abstract
The acquisition of a time-resolved stereoscopic particle image velocimetry (TR-SPIV) system is proposed to enhance the study of global and convective gusts interacting with three dimensional swept wing surfaces in an unsteady low-speed wind tunnel. This TR-SPIV system will significantly enhance an ongoing AFOSR funded program at the University of Colorado Boulder entitled A coordinated experimental and computational study of global and convective gusts on swept wings (Award Number- FA9550-18-1-0311) and funded through the Unsteady Aerodynamics and Turbulent Flows Program managed by Dr. Gregg Abate. The proposed system includes two high-resolution, high-speed cameras (4 Megapixel or 2560 pixels _ 1600 pixels and 1400 Hz sample rate for the full frame resolution); a high-repetition rate, dual-cavity pulsed laser (ND-YLF diode pumped solid state laser with 2 _ 30 mJ=pulse energy at 527 nm and 1 kHz); a high-speed programmable timing unit; and commercially available software for image acquisition and processing. This system will couple with existing instrumentation and capability in the Experimental Aerodynamics Laboratory, including a six degree of freedom load cell balance, a 32 channel miniature pressure scanner, and a five channel constant temperature hot-wire anemometry system to provide a complete time-resolved understanding of how longitudinal gusts interact with and evolve over three-dimensional wing surfaces. The scientific findings from this research program coupled with the improved diagnostic instrumentation provided by this DURIP request will enhance our understanding of wing-gust interactions leading the way in the future for the design and implementation of novel control systems which can further enhance the flight stability and control of air vehicle systems critical to the DoD mission.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502110133
Entities
People
- John Farnsworth
Organizations
- Air Force Office of Scientific Research
- Regents of the University of Colorado
- United States Air Force