FR2729917A1 - Lift producing wing for helicopter - Google Patents

Abstract

A centrally located centrifugal air generator (1) provides a rapid and constant air flow onto a disc shaped annular wing (3) placed at the generator periphery. The assembly is held in position by connecting arms (4). Air is guided from the generator outlet onto the wing profile through an air duct (2). The wing lift is varied by leading (5) and trailing edge flaps which are divided along the wing periphery. When these flaps vary the wing profile symmetrically they increase or decrease the lift. When the flaps vary the wing profile non-symmetrically they enable tipping in one direction and provide translation by increasing the lift.

Description

 The present invention relates to a lifting device allowing the vertical takeoff of a vehicle and its translation in space with mobility similar to that of a helicopter.

 The blade + rotor system currently used on helicopters has indeed several drawbacks linked on the one hand to geo-controlled noise and on the other hand to its relative fragility imposing often heavy maintenance of this type of system.

 The device according to the invention overcomes these two drawbacks, consaae to ventilate a wing in the form of a flat ring using a wind generator placed in postiaa cmirsIeI wind generator ensures a rapid and constant air flow over the profile of the wing and pennet to reach at zero speed of the assembly, the speed of lift of the wing by blowing or by suction, allowing the effect of lift of the assembly.

 A link arm system ensures the relative position of the wing relative to the wind generator whatever the movements of the assembly. An air duct system prevents air loss between the tail generator and the wing.

 The assembly is maneuvered by leading edge and / or trailing edge flaps distributed over the wing (or by any other system making it possible to vary the lift of the wing.) Simultaneous action and balanced on all the flaps will ensure the variations of the globule lift of the whole, allowing variations in altitudes. An unbalanced and selective action of catais shutters will make it possible to tilt the wing in a directioo then, by variation of overall lift, to ensure the movements of translation in space.

 according to particular embodiments and of use: the profile of the wing can be optimized as a function of the desired flight domain, the wind generator can use different principles such as helical, centrifugal, helical, centripetal, helical centripetal, Or other.

-the air flow direction can be from the inside to the outside (case of a centrifugal or similar wind generator) or from the outside to the inside (case of a wind generator centripetal).

the link arms may include anti-rotation flaps.

-the air duct can completely or partially wrap the wing.

-the air duct can be included in the wind generator system.

-the link arms can be included in the air duct.

-The suction port of a centrifugal type wind generator or the discharge of a centripetal type wind generator can be located on the underside of the system.

- the suction port of a centrifugal wind generator or the discharge of a centripetal wind generator can be located simultaneously on the lower and upper sides of the system.

-the air duct can be fitted with shutters.

the air duct may have a constant air passage section at any point between the interior and exterior ends of its diameters.

the air duct may have an increasing air passage cross section from the inside to the outside of its diameters.

-the air duct may have a decreasing air passage section from the inside to the outside of its diameties.

the inner and / or outer inner e of the wing may be in the form of a regular polygon iosait in the form of a planar ring.

-several wings can be ventilated simultaneously by the same wind generator (case of Superimposed or concentric wings)
Figure 1 shows in section and in top view the device according to the invention.

Figure 2 shows in section and in top view a variant of this device eque a polygonal wing and a centrifugal wind generator.

Figure 3 shows in section and in top view a variant of this device equipped with a helico-centrifugal wind generator.

Figure 4 shows in section and in top view a variant of this device equipped with a helical wind generator with centrifugal air flow.

Figure 5 shows in section and in top view a variant of this device equipped with a centripetal wind generator.

Figure 6 shows in section and in top view a variant of this device equipped with a helico-centripetal wind generator.

Figure 7 shows in section and in top view a variant of this device equipped with a helical wind generator with centripetal air flow.

Figure 8 shows in section and in top view a variant of this device equipped with connecting hs provided with anti-torque flaps.

Figure 9 shows in section and in top view a variant of this device equipped with an air duct completely enveloping the wing.

Figure 10 shows in section and in top view a variant of this device equipped with an air duct partially enveloping the wing.

Figure 1 1 shows in section and in top view a variant of this device equipped with an air duct included in the wind generator.

Figure 12 shows in section and in top view a variant of this device equipped with an air duct with a diameter less than the inner diameter of the wing.

Figure 13 shows in section and in top view a variant of this device equipped with a suction port of the centrifugal wind generator placed on the underside of the system.

Figure 14 feels in section and in top view a variant of this device equipped with a suction oeifioe of the centrifugal wind generator placed simultaneously on the lower and upper sides of the system.

Figure 15 shows in section and in top view a variant of this device equipped with an air duct provided with flaps.

Figure 16 shows in section and in top view a variant of this device equipped with an air duct with constant passage section at any point between the interior and exterior ends of its diameters.

Figure 17 shows in section and in top view a variant of this device equipped with an air duct with decreasing passage section from the inside to the outside of its dl-beings.

Figure 18 shows in section and in top view a variant of this device equipped with an air duct with increasing passage section from the inside to the outside of its dianêtres.

Figure 19 shows in section and in top view a variant of this device equipped with two superimposed wings ventilated simultaneously by the same wind generator.

Figure 20 shows in section and in top view a variant of this device equipped with several superimposed wings ventilated simultaneously by the same wind generator.

Referring to these drawings, the device comprises a wind generator (1) in the central position, the function of which is to animate the air at high speed in the plane of a wing so as to ensure sufficient blowing thereof to allow the sustenance. An air duct (2) keeps in the plane of the wing the air current supplied by the wind generator to repat it. A wing (3) (or several supcrpnaea or concentric) ensures the lifting effect. This effect is modulated by leading edge and / or trailing edge flaps (5) distributed around the periphery of the wing (3) and / or the air duct (2). flaps (5) can be simultaneous and / or balanced to ensure modifications of overall lift of the wing (3) and allow variations in altitudes, or isolated or unbalanced to allow tilting and thus allow translation by modification of lift overall of the wing (3) in the tilted position. Linking arms (4) maintain the wing (3), the air seal (2) and the wind generator (1) in relative positions. relative to each other some movements undergone by the set. Furthermore, this system of link arms (4) can also anti-rotation shutter systems (6) ensuring the necessary anti-torque action when the system is used in isolation (in the case of a helicopter for example). the type of wind generator (1) 100 used determines the direction of flow of 1 'air.A wind generator (1) of centrifugal, helico-centrifugal or helical centrifugal type ensures air flow from the center to the periphery. In this case the wing (3) will have its leading edge towards the center of the system (towards the interior of the colrmaae). A wind generator (1) of the centripetal r helico-centripetal or helical centripetal type ensures air flow from the periphery to the center. In this case the wing (3) will have its leading edge towards the periphery of the system (towards the outside of the crown). The two systems can be used oe association (by superposition for example) which can allow n ' use only one engineer should (1).

To the extreme diversity of mission that can be entrusted to such a system, many points can be optimized to allow its application to particular cases. These are for example:
-dimensions and profile of the wing (3).

 -type of wind generator (I) and dimensions.

 -dimensions and profiles of the link arms (4).

 -dimensions and profile of the air duct (2).

 -number and distribution of shutters (5) (6).

The device according to the invention is particularly intended for the lift and propulsion of aircraft.

Claims (16)

 1) Device for ensuring the lift and the translation in the space of the aircraft, characterized in that it comprises a wind generator (1) centrifugal in central position ensuring the ventilation of a wing (3) in the form of an annular disc provided with lift variation systems such as trailing edge flaps or leading edge flaps, distributed over different sectors of the wing R3), the assembly being held in their relative positions by link arms (4), and in that said wing (3) is placed in an air duct (2) which ensures the channeling of the air flow on the profile of the wing  2) Device according to claim 1 characterized in that the wind generator (1) is of the centripetal type and that the direction of air flow being reversed, the positions of the leading edges and of the leak bots are also reversed .  3) Device according to claim I characterized in that the wind generator (1) is of the helical-centrifugal type.  4) Device according to claim I or 2 characterized in that the wind generator (1) is of helical type.  5) Device according to claim 2 characterized in that the wind generator (1) is of helicocentripetal type.  6) Device according to any one of the preceding claims, characterized in that the link arms (4) comprise anti-torque flaps (6) ensuring the anti-rotation of the system.  7) Device according to any one of the preceding claims. Characterized in that the air duct (2) envelops the wing totally or partially.  8) Device according to any one of the preceding claims, characterized in that the air duct (2) is included in the wind generator (1).  9) Device according to any one of the preceding claims, characterized in that the link arms (4) are included in the air duct (2).  10) Device according to any one of the preceding claims, oaractértsé in oe that the suction port of the wind generator (I) centrifugal or discharge of a centripetal wind generator is located on the underside of the system.  ll) Device according to any one of the preceding claims, characterized in that the suction orifice of the centrifugal wind generator (I) or of discharge of a centripetal generator is located, simultaneously on the lower and upper faces of the system .  12) Device according to any one of the preceding claims, characterized in that the air duct (2) is equipped with flaps (5-fig 15).  13) Device according to any one of the preceding claims, characterized in that the air duct (2) has a constant passage section at any point between the inner and outer ends of its diameters.  14) Device according to any one of the preceding claims, characterized in that the air duct (2) has a decreasing passage section from the inside to the outside of its diameters.  15) Device according to any one of the preceding claims, characterized in that the air duct (2) has an increasing passage section from the inside to the outside of its diameters.  16) Device according to any one of the preceding claims, characterized in that the inner and / or outer periphery of the wing (3) is in the form of a regular polygon insert in the annular disc previously mentioned.  17) Device according to any one of the preceding claims, characterized in that several wings (3) superimposed or where concentric are ventilated simultaneously by the generator.  wind (1).