A split rudder surface deflection screw series drive motion mechanism

Abstract

This application belongs to the field of aircraft control surface control, and particularly relates to a split control surface deflection screw series drive motion mechanism. It includes: an upper wing surface, a lower wing surface, a ball screw, and upper and lower wing surface connecting rods. A first connecting part is arranged on the upper wing surface; a second connecting part is arranged on the lower wing surface, and the second connecting part is hinged to the first connecting part; a screw nut is installed on the ball screw, and the ball screw is respectively connected to a first driving mechanism and a second driving mechanism. The first driving mechanism is used to drive the ball screw to deflect up and down, and the second driving mechanism is used to drive the ball screw to rotate around its own axis; one end of the upper wing surface connecting rod is connected to the screw nut, and the other end is connected to the upper wing surface; one end of the lower wing surface connecting rod is connected to the screw nut, and the other end is connected to the lower wing surface. This application overcomes the drawback of the complex control system of the traditional split control surface drive method, reduces the control requirements for the flight control system, and also avoids the situation of mutual interference when the upper and lower wing surfaces deflect by the same angle.

Description

Technical Field

[0001] This application belongs to the field of aircraft rudder control, and particularly relates to a split rudder deflection lead screw series drive motion mechanism. Background Art

[0002] The drag rudder is a typical control surface of a flying wing aircraft and plays a crucial role in the longitudinal and lateral-directional control of the aircraft. The wing surface structure of the drag rudder consists of two upper and lower parts. To simultaneously meet the requirements that the drag rudder can function as a rudder, speed brake, and aileron, it is required that the two control surfaces can be symmetrically split on both sides, or a single control surface can deflect independently, or the two control surfaces can deflect on the same side. The traditional drive method uses two actuators to independently control the deflection of the upper and lower control surfaces respectively. Since the control of the upper and lower wing surfaces is asymmetric, two actuators need to work highly coordinately under non-linear control laws respectively, which increases the design difficulty of the control system. And due to limitations such as the wing height, the actuator systems of the upper and lower wing surfaces generally cannot be placed in the same control plane, which further increases the asymmetry of the upper and lower control systems.

[0003] Therefore, it is desirable to have a technical solution to overcome or at least mitigate at least one of the above-mentioned defects of the prior art. Summary of the Invention

[0004] The purpose of this application is to provide a split rudder deflection lead screw series drive motion mechanism to solve at least one problem existing in the prior art.

[0005] The technical solution of this application is as follows:

[0006] A split rudder deflection lead screw series drive motion mechanism, comprising:

[0007] An upper wing surface, on which a first connection part is provided;

[0008] A lower wing surface, on which a second connection part is provided. The second connection part is hinged to the first connection part at the same installation point, and the installation point is located on the suspension arm at the fixed trailing edge of the wing;

[0009] A ball screw, on which a screw nut is installed. The ball screw is respectively connected to a first drive mechanism and a second drive mechanism. The first drive mechanism is used to drive the ball screw to deflect up and down, and the second drive mechanism is used to drive the ball screw to rotate around its own axis;

[0010] An upper wing surface link, one end of which is connected to the screw nut and the other end is connected to the upper wing surface;

[0011] A lower wing surface link, one end of which is connected to the screw nut and the other end is connected to the lower wing surface.

[0012] In at least one embodiment of the present application, both the first connecting portion and the second connecting portion are lug structures.

[0013] In at least one embodiment of the present application, the first driving mechanism includes a first actuator and an actuator connecting rod. The first actuator is connected to the ball screw through the actuator connecting rod, and the first actuator drives the actuator connecting rod to deflect the ball screw up and down.

[0014] In at least one embodiment of the present application, the second driving mechanism includes a second actuator and a coupling. The second actuator is connected to the ball screw through the coupling, and the second actuator drives the ball screw to rotate about its own axis.

[0015] In at least one embodiment of the present application, the split rudder surface deflection ball screw series drive motion mechanism includes a synchronous up and down deflection drive mode, a symmetric opening and closing drive mode, and a differential deflection drive mode. Among them,

[0016] In the synchronous up and down deflection drive mode: the ball screw deflects up and down under the drive of the first driving mechanism, and the upper wing surface connecting rod and the lower wing surface connecting rod drive the upper wing surface and the lower wing surface to achieve synchronous up and down deflection;

[0017] In the symmetric opening and closing drive mode: the ball screw rotates about its own axis under the drive of the second driving mechanism, the screw nut moves back and forth along the ball screw, and the upper wing surface connecting rod and the lower wing surface connecting rod drive the upper wing surface and the lower wing surface to achieve symmetric opening and closing;

[0018] In the differential deflection drive mode: the ball screw operates under the drive of the first driving mechanism and the second driving mechanism, and the upper wing surface connecting rod and the lower wing surface connecting rod drive the upper wing surface and the lower wing surface to achieve differential deflection.

[0019] The invention has at least the following beneficial technical effects:

[0020] The split rudder surface deflection ball screw series drive motion mechanism of the present application can reduce the design requirements for the flight control system and avoid the interference when the upper and lower wing surfaces deflect by the same angle on the premise of meeting the motion requirements of the split rudder surface. Description of the Drawings

[0021] Figure 1 is the split rudder surface deflection ball screw series drive motion mechanism of an embodiment of the present application.

[0022] Wherein:

[0023] 1 - Upper wing surface; 2 - Lower wing surface; 3 - Upper wing surface connecting rod; 4 - Lower wing surface connecting rod; 5 - Lead screw nut; 6 - Ball screw; 7 - First actuator; 8 - Mounting point. Detailed implementation manner

[0024] To make the purpose, technical solution and advantages of the implementation of this application clearer, the technical solution in the embodiments of this application will be described in more detail below in conjunction with the accompanying drawings in the embodiments of this application. In the drawings, the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The described embodiments are part of the embodiments of this application, rather than all of the embodiments. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain this application, and should not be construed as a limitation on this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application. The embodiments of this application will be described in detail below in conjunction with the accompanying drawings.

[0025] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application.

[0026] The following combines the attached Figure 1 Make a further detailed description of this application.

[0027] This application provides a split rudder surface deflection lead screw series drive motion mechanism, including: upper wing surface 1, lower wing surface 2, ball screw 6, upper wing surface connecting rod 3 and lower wing surface connecting rod 4.

[0028] As Figure 1 shown, a first connection part is provided on the upper wing surface 1; a second connection part is provided on the lower wing surface 2, and the second connection part of the lower wing surface 2 is hinged to the first connection part of the upper wing surface 1 at the same mounting point 8, and this mounting point 8 is located on the suspension arm at the fixed trailing edge of the wing; a lead screw nut 5 is installed on the ball screw 6, and the ball screw 6 is respectively connected to the first drive mechanism and the second drive mechanism. The first drive mechanism is used to drive the ball screw 6 to deflect up and down, and the second drive mechanism is used to drive the ball screw 6 to rotate around its own axis; one end of the upper wing surface connecting rod 3 is connected to the lead screw nut 5, and the other end is connected to the upper wing surface 1; one end of the lower wing surface connecting rod 4 is connected to the lead screw nut 5, and the other end is connected to the lower wing surface 2.

[0029] In an embodiment of the present application, the first connecting portion of the upper wing surface 1 and the second connecting portion of the lower wing surface 2 are both lug structures.

[0030] For the split rudder surface deflection screw series drive motion mechanism of the present application, the first drive mechanism may include a first actuator 7 and an actuator connecting rod connected to the first actuator 7. The first actuator 7 is connected to the ball screw 6 through the actuator connecting rod. The first actuator 7 drives the actuator connecting rod to cause the ball screw 6 to deflect up and down in the chordwise backward direction. In this embodiment, the second drive mechanism includes a second actuator and a coupling. The second actuator is a rotary actuator and is connected to the ball screw 6 through the coupling, and drives the ball screw 6 to rotate around its own axis through the rotary actuator.

[0031] For the split rudder surface deflection screw series drive motion mechanism of the present application, driven by the first drive mechanism and the second drive mechanism, the split rudder surface deflection screw series drive motion mechanism has three motion modes: synchronous up and down deflection drive mode, symmetric opening and closing drive mode, and differential deflection drive mode. Among them, in the synchronous up and down deflection drive mode: the ball screw 6 deflects up and down under the drive of the first drive mechanism, and the upper wing surface 1 and the lower wing surface 2 are driven by the upper wing surface connecting rod 3 and the lower wing surface connecting rod 4 to achieve synchronous up and down deflection; in the symmetric opening and closing drive mode: the ball screw 6 rotates around its own axis under the drive of the second drive mechanism, the screw nut 5 moves back and forth along the ball screw 6, and the upper wing surface 1 and the lower wing surface 2 are driven by the upper wing surface connecting rod 3 and the lower wing surface connecting rod 4 to achieve symmetric opening and closing; in the differential deflection drive mode: the ball screw 6 operates under the drive of the first drive mechanism and the second drive mechanism, and the upper wing surface 1 and the lower wing surface 2 are driven by the upper wing surface connecting rod 3 and the lower wing surface connecting rod 4 to achieve differential deflection.

[0032] For the split rudder surface deflection screw series drive motion mechanism of the present application, driving the ball screw 6 to deflect up and down through the first drive mechanism and driving the ball screw 6 to rotate around its own axis through the second drive mechanism together constitute a two-stage mechanism series drive mode. When the ball screw 6 only deflects up and down under the drive of the first drive mechanism, the upper and lower wing surfaces are driven by the connecting rods connected to the nuts on the ball screw 6 to achieve synchronous up and down deflection. When the ball screw 6 only rotates around its own axis under the drive of the second drive mechanism, the bolt moves back and forth along the screw direction with the ball screw, so as to achieve symmetric opening and closing of the upper and lower wing surfaces. When the two drives operate simultaneously, the upper and lower wing surfaces can achieve differential deflection. The present application enables the two types of motions of the split rudder surface to be completed by two sets of mechanisms respectively without interference, ensures the symmetric opening and closing of the upper and lower wing surfaces through the drive mechanism, reduces the control requirements for the flight control system, and also avoids the situation where the upper and lower wing surfaces deflect the same angle but interfere with each other, overcoming the drawback of the complex control system of the traditional split rudder surface drive method.

[0033] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

Claims

1. A split rudder surface deflection lead screw series drive motion mechanism, characterized in that Comprising: An upper wing surface (1) provided with a first connection part thereon; A lower wing surface (2) provided with a second connection part thereon, the second connection part being hinged to the first connection part at the same mounting point (8), the mounting point (8) being located on a suspension arm at the fixed trailing edge of the wing; A ball screw (6) with a screw nut (5) mounted thereon, the ball screw (6) being connected to a first drive mechanism and a second drive mechanism respectively, the first drive mechanism being used to drive the ball screw (6) to deflect up and down, and the second drive mechanism being used to drive the ball screw (6) to rotate about its own axis; An upper wing surface link (3) having one end connected to the screw nut (5) and the other end connected to the upper wing surface (1); A lower wing surface link (4) having one end connected to the screw nut (5) and the other end connected to the lower wing surface (2); The split rudder surface deflection screw series drive motion mechanism includes a synchronous up and down deflection drive mode, a symmetric opening and closing drive mode, and a differential deflection drive mode, wherein, In the synchronous up and down deflection drive mode: the ball screw (6) deflects up and down under the drive of the first drive mechanism, and the upper wing surface (1) and the lower wing surface (2) are driven by the upper wing surface link (3) and the lower wing surface link (4) to achieve synchronous up and down deflection; In the symmetric opening and closing drive mode: the ball screw (6) rotates about its own axis under the drive of the second drive mechanism, the screw nut (5) moves back and forth along the ball screw (6), and the upper wing surface (1) and the lower wing surface (2) are driven by the upper wing surface link (3) and the lower wing surface link (4) to achieve symmetric opening and closing; In the differential deflection drive mode: the ball screw (6) operates under the drive of the first drive mechanism and the second drive mechanism, and the upper wing surface (1) and the lower wing surface (2) are driven by the upper wing surface link (3) and the lower wing surface link (4) to achieve differential deflection.

2. The cracking type rudder surface deflection lead screw series drive motion mechanism according to claim 1, characterized in that Both the first connection part and the second connection part are lug structures.

3. The split rudder surface deflection lead screw series drive motion mechanism according to claim 1, characterized in that, The first drive mechanism includes a first actuator (7) and an actuator link, the first actuator (7) being connected to the ball screw (6) through the actuator link, and the first actuator (7) driving the ball screw (6) to deflect up and down by driving the actuator link.

4. The split rudder surface deflection lead screw series drive motion mechanism according to claim 1, characterized in that, The second drive mechanism includes a second actuator and a coupling, the second actuator being connected to the ball screw (6) through the coupling, and driving the ball screw (6) to rotate about its own axis through the second actuator.

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