The Grudieaire GH-4 is an American autogyro that was designed for homebuilt construction.
Design and development The GH-4 is a single seat autogyro constructed of welded steel tubing with aircraft fabric covering. The GH-4 uses Timken roller bearings and spruce wood core rotor blades with composite covering.
Variants Grudieaire GH-4 Homebuilt Vortech B20
Specifications (GH-4)
See also
References