TYPE: Convertiplane.

PROGRAMME: Groen proposes using same technology projected for its Gyrolifter as the basis for a 35-seat, VTOL commuter airliner. Plan calls for mounting rotor system, with tipjets, on an existing high-wing turboprop, such as the Polish-built M28 variant of the Antonov An-28. The resulting 19-passenger gyrodyne would provide rapid point-to-point transit and be the initial member of a family of civil runway and АТС independent gyrodynes designed to address the congestion problem at many major airports.