A separating body separating and positioning mechanism and a separating body position adjusting method

Abstract

This invention provides a separation and positioning mechanism for a separate body and a method for adjusting the position of the separate body. It includes an aircraft model fixed to the root of a wind tunnel support rod. A connecting plate is detachably installed on the wind tunnel support rod near the aircraft model. A separate body located directly below the aircraft model is rotatably connected to the connecting plate. A locking mechanism is provided between the connecting plate and the separate body. The invention also includes the following steps: S1, analyzing the position of the separate body and confirming the position of the positioning bolts; S2, analyzing the angle of attack α of the separate body and confirming the position of the locking bolts. This invention, by setting up a connecting plate and a locking mechanism, facilitates multi-position adjustment of the separate body during experiments. It is beneficial for detailed studies of the load and dynamic response of the separate body at a determined position, effectively replacing traditional free-flying vehicle experiments that are inconvenient for research and measurement, and avoiding increased experimental costs and damage to the wind tunnel.

Description

Technical Field

[0001] This invention relates to the field of aeroelasticity testing technology, and in particular to a separation and positioning mechanism for a separator and a method for adjusting the position of the separator. Background Technology

[0002] In modern joint operations, it is often necessary to use aircraft to bomb targets; the bombs dropped by the aircraft are the separation bodies. Generally, for separation body structures, it is necessary to study the loads and responses during the separation process. Typically, such tests are conducted using free-flight tests, that is, by optically measuring the attitude and response of the separation structure during the actual separation process.

[0003] However, traditional model devices have the following shortcomings:

[0004] (1) In free flight tests, it is impossible to attach sensors to the separated body, making it difficult to measure the load and dynamic response of the separated body.

[0005] (2) During the test of the separated object, the dwell time at each position of the separated body is short, which is not conducive to a detailed study of the load and dynamic response at a certain position.

[0006] (3) The falling of the separator will damage the separator structure, increase the test cost, and may also damage the wind tunnel. Summary of the Invention

[0007] The purpose of this invention is to provide a separation and positioning mechanism for a separator and a method for adjusting the position of a separator, so as to solve the above-mentioned technical problems.

[0008] The present invention provides a separation and positioning mechanism for a separation body, including an aircraft model fixed to the root of a wind tunnel support rod. A connecting plate is detachably installed on the wind tunnel support rod near the aircraft model. A separation body located directly below the aircraft model is rotatably connected to the connecting plate. A locking mechanism is provided between the connecting plate and the separation body.

[0009] Furthermore, the root of the wind tunnel support rod is detachably connected to the aircraft model.

[0010] Furthermore, a connecting frame is provided on the top of the connecting plate, and the connecting frame is detachably connected to the wind tunnel support rod.

[0011] Furthermore, the connecting plate is vertically installed at the bottom of the connecting frame, and one surface of the connecting plate is coplanar with the symmetrical plane of the connecting frame.

[0012] Furthermore, the connecting plate is vertically provided with a front fixing waist hole and a rear fixing waist hole, and the front fixing waist hole and the rear fixing waist hole are arranged in parallel.

[0013] Furthermore, an adjusting plate is connected to one end of the separator near the connecting plate via a connecting rod, and the adjusting plate is connected to the connecting plate via the locking mechanism.

[0014] Furthermore, the adjusting plate has a positioning hole at a position away from the separating body, and an adjusting waist hole at a position close to the separating body.

[0015] Furthermore, the locking mechanism includes a positioning bolt and a locking bolt, the positioning hole is connected to the front fixed waist hole through the positioning bolt, and the adjusting waist hole is connected to the rear fixed waist hole through the locking bolt.

[0016] Furthermore, the contact surface between the adjusting plate and the connecting plate is coplanar with the symmetry plane of the connecting frame, and the axis of the separating body is coplanar with the symmetry plane of the connecting frame.

[0017] The present invention also provides a method for adjusting the position of a separator, comprising the following steps:

[0018] S1, Analyze the position of the separated body, determine the position X1 of the positioning bolt in the front fixing waist hole based on the position of the extended line of the tail end of the separated body, and tighten the positioning bolt in the front fixing waist hole;

[0019] S2, analyze the angle of attack α of the separated body, according to

[0020] X2=tanα*l+X1

[0021] Where: α represents the angle of attack of the separated body, X1 represents the position of the positioning bolt in the front fixed waist hole, X2 represents the position of the locking bolt in the rear fixed waist hole, and l represents the axial distance between the front fixed waist hole and the rear fixed waist hole;

[0022] After determining the position X2 of the locking bolt in the rear fixing hole, move the locking bolt in the rear fixing hole to that position and tighten the locking bolt in the rear fixing hole.

[0023] This invention facilitates multi-position adjustment of the separated body during the experiment by setting up a connecting plate and a locking mechanism. This is beneficial for detailed studies of the load and dynamic response of the separated body at a certain position, effectively replacing traditional free-flying vehicle tests that are inconvenient to study and measure, and avoiding increased test costs and damage to the wind tunnel. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is an isometric test diagram of the present invention;

[0026] Figure 2 This is a front view of the present invention;

[0027] Figure 3 This is an isometric test diagram of the separated body and connecting components of the present invention;

[0028] Figure 4 This is an isometric test diagram of the connecting component of the present invention;

[0029] Figure 5 This is a left view of the connecting component of the present invention;

[0030] Figure 6 This is a front view of the connecting component of the present invention;

[0031] Figure 7 This is an isometric test diagram of the connecting rod and adjusting plate of the present invention;

[0032] Figure 8 These are top and front views of the connecting rod and adjusting plate of the present invention;

[0033] Figure 9 This is a schematic diagram of the separation body position adjustment method of the present invention;

[0034] Figure 10 This is a schematic diagram of the separation body position adjustment method in Embodiment 2 of the present invention;

[0035] Explanation of reference numerals in the attached figures:

[0036] In the diagram: 1-Aircraft model, 2-Wind tunnel support rod, 31-Connecting frame, 32-Connecting plate, 4-Front fixing waist hole, 5-Rear fixing waist hole, 6-Separated body, 71-Adjusting plate, 711-Adjusting waist hole, 712-Positioning hole, 72-Connecting rod, 81-Positioning bolt, 82-Locking bolt; Detailed Implementation

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example 1

[0041] like Figures 1-9 As shown:

[0042] A separation and positioning mechanism for a separator includes an aircraft model 1 fixed to the root of a wind tunnel support rod 2. The aircraft model 1 and the wind tunnel support rod 2 are coaxially arranged. A connecting plate 32 is detachably installed on the wind tunnel support rod 2 near the aircraft model 1. A separator 6 that rotates in a vertical plane and is located directly below the aircraft model 1 is connected to the connecting plate 32. A locking mechanism is provided between the connecting plate 32 and the separator 6.

[0043] The base of the wind tunnel support rod 2 is detachably connected to the aircraft model 1 via fixing bolts or fixing keys.

[0044] like Figures 1-6 As shown, a concave connecting frame 31 is provided on the top of the connecting plate 32, and the connecting frame 31 is detachably connected to the wind tunnel support rod 2 by fixing bolts.

[0045] The connecting plate 32 is vertically installed at the bottom of the connecting frame 31, and one surface of the connecting plate 32 is coplanar with the symmetrical plane of the connecting frame 31.

[0046] The connecting plate 32 has a front fixing waist hole 4 and a rear fixing waist hole 5 vertically arranged, and the front fixing waist hole 4 and the rear fixing waist hole 5 are arranged in parallel.

[0047] like Figures 1-3 and Figure 7 As shown, the end of the separator 6 near the connecting plate 32 is connected to an adjusting plate 71 via a connecting rod 72, and the adjusting plate 71 is connected to the connecting plate 32 via a locking mechanism.

[0048] The adjusting plate 71 has a positioning hole 712 at a position away from the separating body 6, and an adjusting waist hole 711 at a position close to the separating body 6.

[0049] The locking mechanism includes a positioning bolt 81 and a locking bolt 82. The positioning hole 712 is connected to the front fixed waist hole 4 through the positioning bolt 81, and the adjusting waist hole 711 is connected to the rear fixed waist hole 5 through the locking bolt 82.

[0050] The contact surface between the adjusting plate 71 and the connecting plate 32 is coplanar with the symmetry plane of the connecting frame 31, and the axis of the separating body 6 is coplanar with the symmetry plane of the connecting frame 31.

[0051] like Figure 5 As shown, the positioning bolt 81 and the locking bolt 82 are the same size. The thickness a of the connecting plate 32 should be greater than 6mm and located on one side of the axis of symmetry of the connecting frame 31. The length b of the connecting plate 32 is preferably 10cm-20cm. In this embodiment, the length b of the connecting plate 32 is 15cm. The length c of one end of the positioning bolt 81 and the locking bolt 82 protruding from the nut should be greater than 4mm.

[0052] like Figure 6 As shown, the axial distance d between the front fixing waist hole 4 and the rear fixing waist hole 5 should not be less than 3cm; the opening length e of the front fixing waist hole 4 and the rear fixing waist hole 5 should not be less than 10cm.

[0053] like Figure 8 As shown, the opening length f of the adjusting waist hole 711 should be 1cm-2cm longer than the axial distance d between the front fixed waist hole 4 and the rear fixed waist hole 5; the diameter g of the positioning hole 712 and the opening height h of the adjusting waist hole 711 should be equal, and should be 1mm-2mm longer than the diameter of the positioning bolt 81 and the locking bolt 82.

[0054] All structures in this device are made of metal, and the elastic modulus of the connecting frame 31, connecting plate 32 and connecting rod 72 is not less than 200 GPa.

[0055] like Figure 9 As shown, the present invention also provides a method for adjusting the position of a separator, comprising the following steps:

[0056] S1, Analyze the position of the separated body 6, determine the position X1 of the positioning bolt 81 in the front fixed waist hole 4 by the position of the extended line of the tail end of the separated body 6, and tighten the positioning bolt 81 in the front fixed waist hole 4.

[0057] S2, analyze the angle of attack α of the separated body 6, according to

[0058] X2=tanα*l+X1

[0059] Where: α represents the angle of attack of the separator 6, X1 represents the position of the positioning bolt 81 in the front fixed waist hole 4, X2 represents the position of the locking bolt 82 in the rear fixed waist hole 5, and l represents the axial distance between the front fixed waist hole 4 and the rear fixed waist hole 5.

[0060] After determining the position X2 of the locking bolt 82 in the rear fixing waist hole 5, move the locking bolt 82 in the rear fixing waist hole 5 to that position and tighten the locking bolt 82 in the rear fixing waist hole 5. After determining the position of the locking bolt 82, the positioning bolt 81 needs to be loosened first so that the separating body 6 can rotate and the locking bolt 82 can rotate to the determined position.

[0061] The angle of attack α of the separated body can be obtained using measuring instruments such as a 3D laser scanner and a coordinate measuring machine.

[0062] When using this device for testing, corresponding sensors can be fixed on the separated body 6 to measure the load and response of the separated body 6, and corresponding sensors can also be fixed on the aircraft model 1 to measure the load and response of the aircraft model 1.

[0063] During installation, first fix the wind tunnel support rod 2 to the wind tunnel, then use fixing bolts, fixing keys and other connectors to fix the aircraft model 1 and the connecting frame 3 to the wind tunnel support rod 2. Use fixing bolts, fixing keys and other connectors to fix the connecting rod 72 and the separator 6. Finally, according to the separator position adjustment method, use positioning bolts 81 and locking bolts 82 to fix the adjusting plate 71 to the front fixing waist hole 4 and the rear fixing waist hole 5 of the connecting plate 32.

[0064] The sensors include the following types: pulsating pressure sensors can measure the acoustic and vibration response of a structure; balance sensors can measure the aerodynamic forces and torques in various directions of a structure; acceleration sensors and displacement sensors can measure the frequency, mode shape, and other structural dynamic characteristics of a structure.

[0065] This invention facilitates multi-position adjustment of the separated body during the experiment by setting up a connecting plate and a locking mechanism. This is beneficial for detailed studies of the load and dynamic response of the separated body at a certain position, effectively replacing traditional free-flying vehicle tests that are inconvenient to study and measure, and avoiding increased test costs and damage to the wind tunnel.

[0066] Example 2

[0067] like Figure 10 As shown, in Example 1, the separator 6 is inclined downwards, while in this example, the separator 6 is inclined upwards.

[0068] This embodiment provides a method for adjusting the position of a separator, comprising the following steps:

[0069] S1, Analyze the position of the separated body 6, determine the position X1 of the positioning bolt 81 in the front fixed waist hole 4 by the position of the extended line of the tail end of the separated body 6, and tighten the positioning bolt 81 in the front fixed waist hole 4.

[0070] S2, analyze the angle of attack α of the separated body 6, according to

[0071] X2=X1-tanα*l

[0072] Where: α represents the angle of attack of the separator 6, X1 represents the position of the positioning bolt 81 in the front fixed waist hole 4, X2 represents the position of the locking bolt 82 in the rear fixed waist hole 5, and l represents the axial distance between the front fixed waist hole 4 and the rear fixed waist hole 5.

[0073] After determining the position X2 of the locking bolt 82 in the rear fixing waist hole 5, move the locking bolt 82 in the rear fixing waist hole 5 to that position and tighten the locking bolt 82 in the rear fixing waist hole 5. After determining the position of the locking bolt 82, the positioning bolt 81 needs to be loosened first so that the separating body 6 can rotate and the locking bolt 82 can rotate to the determined position.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A separating positioning mechanism for separating bodies, characterized in that The aircraft model is fixed at the root of the wind tunnel support rod, the position of the wind tunnel support rod near the aircraft model is detachably installed with a connecting plate, the connecting plate is rotationally connected with a separation body located directly below the aircraft model, and a locking mechanism is arranged between the connecting plate and the separation body; The front fixed waist hole and the rear fixed waist hole are vertically arranged on the connecting plate and are arranged in parallel; The end of the separation body near the connecting plate is connected with an adjusting plate through a connecting rod, and the adjusting plate and the connecting plate are connected through the locking mechanism; The position away from the separation body of the adjusting plate is provided with a positioning hole, and the position close to the separation body of the adjusting plate is provided with an adjusting waist hole; The locking mechanism includes a positioning bolt and a locking bolt, the positioning hole and the front fixed waist hole are connected through the positioning bolt, and the adjusting waist hole and the rear fixed waist hole are connected through the locking bolt; The separation body position adjusting method in the separation body separation positioning mechanism includes the following steps: S1, analyzing the separation body position, determining the position X1 of the positioning bolt in the front fixed waist hole according to the extension line position of the tail end of the separation body, and tightening the positioning bolt in the front fixed waist hole; S2, analyzing the separation body attack angle α, and determining the position X2 of the locking bolt in the rear fixed waist hole according to X2=tanα*l+X1 Wherein: α represents the separation body attack angle, X1 represents the position of the positioning bolt in the front fixed waist hole, X2 represents the position of the locking bolt in the rear fixed waist hole, and l represents the axial distance between the front fixed waist hole and the rear fixed waist hole; The position X2 of the locking bolt in the rear fixed waist hole is determined, the locking bolt in the rear fixed waist hole is moved to the position, and the locking bolt in the rear fixed waist hole is tightened.

2. The separating positioning mechanism of claim 1, wherein The root of the wind tunnel support rod is detachably connected with the aircraft model.

3. The separating positioning mechanism of claim 1, wherein The top of the connecting plate is provided with a connecting frame, and the connecting frame is detachably connected with the wind tunnel support rod.

4. The separating positioning mechanism of claim 3, wherein The connecting plate is vertically installed at the bottom of the connecting frame, and one surface of the connecting plate is coplanar with the symmetry plane of the connecting frame.

5. The separating positioning mechanism of claim 1, wherein The contact surface of the adjusting plate and the connecting plate is coplanar with the symmetry plane of the connecting frame, and the axis of the separation body is coplanar with the symmetry plane of the connecting frame.

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