Dynamic forced air intakes for vehicles专利检索-空气动力学物理专利检索查询-专利查询网

Dynamic forced air intakes for vehicles

阅读：575发布：2023-11-04

专利汇可以提供Dynamic forced air intakes for vehicles专利检索，专利查询，专利分析的服务。并且The forced air intake for vehicles and more particularly for high-speed subsonic aircraft comprises a frontal opening bounded by a profile the shape of which is determined as a function of the laws of aerodynamics brought into play when the vehicle is travelling at its nominal speed. This air intake usually cooperates with a turbojet for propelling the vehicle. The air intake comprises a plurality of movable flaps arranged over the outer surface of the profile, adjacent its leading edge. In their retracted position, the movable flaps restore the contour of the profile. In their extended position, the movable flaps define an intake horn for the air intake and a succession of convergent passages between their inner surfaces and the outer surface of the profile.，下面是Dynamic forced air intakes for vehicles专利的具体信息内容。

权利要求

1. A dynamic forced air intake for vehicles and more particularly for high-speed subsonic aircraft, comprising means defining a frontal opening the plane of which is perpendicular to the axial velocity vector of the vehicle and suction means for drawing air in through said frontal opening, the shape of the profile bounding at least part of said frontal opening being such as to satisfy the laws of aerodynamics brought into play when the vehicle is travelling at its nominal speed, said intake further including a plurality of movable flaps positioned over the outer surface of the said profile, said movable flaps forming at least an outer part of the leading edge of said profile and being capable of movement, under the action of command means, between two limit positions, characterized by the fact that the two limit positions are, a first, retracted position suitable for when the vehicle Is travelling at its nominal speed and in which the movable flaps restore the contour of the profile as perfectly as possible, and, a second, extended position suitable for when the vehicle is stationary or is moving at a speed greatly below its nominal speed and in which said movable flaps bound, on the one hand, by means of their outer surfaces and in co-operation with the leading edge and the inner surface of the profile, an intake horn through which passes a main flow generated by the suction means, and on the other hand, by means of their inner surfaces and in co-operation with the outer surface of the profile adjacent the leading edge, a convergent passage through which passes an induced flow likewise generated by the suction means about the profile such that the induced flow acts upon the main flow to avoid all flow separations over that part of the inner surface of the profile adjacent the leading edge.

2. An air intake according to claim 1 further including means for regulating the magnitude of the induced flow.

3. An air intake according to claim 1 wherein each movable flap is mounted on a support guided by a circular sector shaped rail fully recessed into the profile, the position of this rail and its radius of curvature being such that the axis upon which its center lies is located forwardly and offset inwardly in relation to the forward edge of the associated movable flap when the same is in its retracted position.

4. An air intake according to claim 1 wherein the command means used to control the movable flaps are jacks which respectively actuate one of the movable flaps through a bellcrank, said jacks being either controlled by the pilot of the vehicle or referenced to the speed of the vehicle.

5. An air intake according to claim 1, wherein said flaps are so shaped that the leading edge substantially preserves the shape and position thereof whatever the position of the flaps.

6. An air intake according to claim 1, wherein the axial section of said flaps tapers more gradually towards the leading edge than towards the trailing edge.

7. An air intake according to claim 1 wherein the command means used to control the movable flaps are the aerodynamic forces which are exerted on each flap and which vary with the speed of the vehicle, each movable flap being mounted for loose motion in relation to the profile.

8. An air intake according to claim 7 further including dampers each connected to one movable flap, said dampers being intended to prevent any vibration of said flaps which could become incipient at certain speeds of the vehicle.

9. An air intake according to claim 1 wherein the free spaces which when the movable flaps are in their extended position exist between the forward and rear edges thereof are obturated by lateral extensions, each movable flap comprising a lateral extension which engages into a lodging formed in the adjacent movable flap when the movable flaps are moved from their extended position to their retracted position.

10. An air intake according to claim 9 wherein each lodging is a slit formed in the thickness of the movable flap.

11. An air intake according to claim 9, wherein each lodging is formed by spotfacing the movable flap.

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Dynamic forced air intakes for vehicles

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