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The famous 4015 YRON Rotorcycle who won the "Coupe de la Meilleure
Presentation" of the Grand Prix International de Gyraviation, presented
by the Aeroclub de France, after helicopter competitions at the 1961
"Salon de l'Aeronautique" in Paris
Serial number # 1000 - After all these years, it is still flying.
This aircraft was used to develop new digital auto-pilot system for the QH-50 C/D
in the 1960's. Yet occasionally we took it out for a brief flight.
We also used serial # 1000 for testing the new composite rotor blades with higher
mast separation for improved performance.

You can view this aircraft in flight with new main rotor grips and blades on
www.youtube.com as well as other Gyrodyne helicopter films
Twin Porsche engine YRON - Navy designation QH-50B
YRON in flight at Robertson facility, Los Angeles, California
THREE QH-50A TARGET DRONES
DSN1 LOADED DRONE WITH ACOUSTIC TORPEDO
DSN1 ON SHIP DECK LOADED WITH ACCOUSTIC TORPEDO
AND DIGITAL FLIGHT CONTROL
DSN2 TWIN ENGINE PORSCHE ORIGINAL BLUEPRINT
DSN1 MANNED ROTORCYCLE