Identical to the Hiller Model 1031 except for a combining gearbox and yaw control provided by vanes in the rotor slipstream.
Source: “Flying Platforms and the Many Novel Aircraft Configurations Investigated by Charles Zimmerman”, Robert Scott, Paper presented at AHS 69th Annual Forum, Phoenix, Arizona, May 21-23, 2013
VTOL type: Helicopter
Lift devices: 2 in Coaxial configuration
Crew required: 1 in Other arrangement
Landing gear: Wheels (non-retractable)