A measuring method to detect wall flow topologies by active infrared thermography was developed. Quadcopter rotor blades were studied in typical hover and forward flight conditions. while using a high-power infrared laser to heat the blade surface. By this. https://www.roneverhart.com/Marucci-Magnolia-11-75-Fastpitch-Softball-Glove-MFGMGM44A2FP-W/