There has been developed and batch-produced a two-seat piloted vehicle autogyro “Profile M 91”. The autogyro's design and capacity of the power unit are intended for people with weight of not more than 100 kg.
The aircraft's bearing system consists in a disk wing with blades retracted inside it. Before taking-off, the disk wing revolved long enough so that under the effect of centrifugal forces the blades are let out from it providing for the vertical take off and landing of the machine.
The blades of helicopters and planes air propellers are among especially crucial units of aircraft. They operate in severe conditions of increased content of dust in the air—especially at take-off and landing, in hovering modes, at horizontal flight at small heights.
Transportation of passengers, fine cargoes and mail; training flights; patroling of forests, gas and oil pipelines, power lines, communication lines; search and rescue operations.