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The system of helices sustentatrices, propellant stabilizer parachutes and to buckling differential between the helices of the system for aircraft of the type of helicopter, to the direction, the propulsion and stability, by inclining, in all directions
The system of helices sustentatrices, propellant stabilizer parachutes and to buckling differential between the helices of the system for aircraft of the type of helicopter, to the direction, the propulsion and stability, by inclining, in all directions