That's the one Bri
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The Wilford W.R.K Gyroplane of 1931
This gyroplane is an elegant design produced in 1931. The aircraft being a single seat design in a tractor configuration with sleek simple lines and a beautifully tapered four-bladed rotor. The aircraft model identification came from the initials of E. Burke Wilford and German aero engineers Walter Rieseler and Walter Kreiser, upon whose rotor patent (1927) the ship was designed around.
The notable and historic achievement of the WRK Gyro was the practical application of cyclic pitch control. This advancement allowed the aviator to directly control the pitch direction of the rotor disc. This development would improve the agility of the aircraft and later be one of the required technologies needed for the development of a practical vertical lift aircraft, the helicopter.
evansb has control 