초록 ▼

A rotor having airfoil-section shaped blades is set into a fluid stream. Over a connection-or-transmission means a propeller is connected to the rotor. The fluid stream whereinto the rotor is set gives airflow energy to the rotor and revolves the rotor. The propeller is driven by the rotor over the

A rotor having airfoil-section shaped blades is set into a fluid stream. Over a connection-or-transmission means a propeller is connected to the rotor. The fluid stream whereinto the rotor is set gives airflow energy to the rotor and revolves the rotor. The propeller is driven by the rotor over the connection-or transmission means. Since the propeller is revolved by the rotor in the fluid stream, the propeller provides a thrust. The thrust may be used to lift a weight or to drive a member. A suitable application of the arrangement is for example, to transform a multi-bladed helicopter into a gliding craft which descends under a gliding angle towards the surface of the earth, when the helicopter has a complete engine failure. Auto-rotation accidents can thereby become prevented. The device is also applicable to drive a vehicle or to lift a weight. Variable means can be applied to obtain variable thrusts in flying craft to improve their efficiencies or change from one flight-system to another flight system. In other embodiments several novel concepts for air-borne craft are provided which include emergency landing devices, retractable and extendable or relation-varifying devices for wings or propellers. Improvements are also proposed to engines and hydraulic devices to increase the power or efficiency, the lessen the weight per power output or to simplify the manufacturing and reduce the costs.

대표청구항 ▼

An aircraft having a body with a longitudinal imaginary vertical medial plane through said body and a pair of first wing portions extending laterally from said body, one wing of said pair in one lateral direction of said plane and the other wing of said pair extending symmetrically in the opposite d

An aircraft having a body with a longitudinal imaginary vertical medial plane through said body and a pair of first wing portions extending laterally from said body, one wing of said pair in one lateral direction of said plane and the other wing of said pair extending symmetrically in the opposite direction of said plane, wherein portions of a pair of secondary wings are provided in said craft, while one wing of said pair of secondary wings extends laterally of said medial plane and the other wing of said secondary wings extends from said body symmetrically in the opposite direction of said plane, wherein each wing portion of said secondary pair of wing portions is provided with a secondary propeller which is revolvably borne and located on the front of the respective portion of said secondary wing portions and thereby also located rearwardly behind the respective portion of said pair of first wing portions, whereby the propeller of said one wing and the propeller of said other wing of said secondary wings form together a pair of secondary wing propellers, wherein variation means are attached to said secondary wings; wherein said secondary wing pair includes flexibility arrangements to permit a change of the location or direction of said wings of said secondary pair, wherein said secondary wings are variable in their position relative to said first wing pair in order to obtain suitable flight conditions of said craft at different speeds of forward movement of said craft, wherein said secondary wings are located at least partially rearwardly behind said pair of first wing portions and at least temporarily inside of the airflow stream over said pair of first wing portions, while said flexibility arrangements are provided to vary the characteristic and performance of flow of air over said first wing portions and over said pair of secondary wings, whereby the ability and attitude of said aircraft is at least partially controlled by said flexibility arrangements and said pair of secondary wings, wherein said first wing portions are permanently fixed to the body of said craft in fixed angles of chord relative to said body, whereby said angles of chord of said first wing portions are not variable and remain at all times permanently fixed, wherein said portions of said second wings are pivotable around centers for a pivotal movement with said centers defining pivot axes which are substantially laterally extended from said body and which are substantially parallel to the extension of said first wing portions, and, wherein said pivot axes are located substantially along the rear portions of said first wing portions and thereby substantially along the front portions of said secondary wings, whereby the pivotal movements of said secondary wings around said pivot axes actuate and define an inclination of said secondary wings relative to said first wing portions.