Uploaded December 2015 | Updated September 2026, 2 weeks ago

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Flow visualization (Particle Image Velocimetry - PIV). 30 m/s, full throttle, 45 degrees pitch angle, Graupner C-Prop 5.5x3", 4S 75C, Ultra 2806 2300 kV

... see shrediquette.blogspot.com for the background story.

Thanks to Florian for support & filming!