Folding rudder wind tunnel unfolding test device

Abstract

The utility model discloses a folding rudder wind tunnel unfolding test device, which particularly relates to the field of folding rudder tests and comprises a base, a rotary table, a fixing plate, a folding rudder to be tested, a positioning rod, an electric cylinder and a connecting plate. The base plays a role in supporting and fixing the whole device; the turntable is used for adjusting the angle between the to-be-tested folding rudder and the air duct; the fixing plate is used for connecting and fixing a to-be-tested folding rudder; the positioning rod is used for positioning the rudder sheet in a folded state; the electric cylinder is used for driving the positioning rod to quickly move; the connecting plate is used for fixing the electric cylinder and adjusting the position of the electric cylinder; during use, the electric cylinder is started, the positioning rod is driven to move quickly, the to-be-tested folding rudder sheet is released, and the rudder sheet is unfolded under the action of the torsional spring and the structure of the rudder sheet until the rudder sheet is locked. Compared with an existing device of the same type, the folding rudder wind tunnel unfolding test device is simple in structure, easy to operate and not limited by sites.

Description

Technical Field

[0001] This utility model relates to the field of folding rudder testing, and in particular to a folding rudder wind tunnel deployment test device. Background Technology

[0002] With the rapid development of aerospace technology, there are various ways for spacecraft to take off. Among them, the use of tube-launched spacecraft is attracting more and more attention. Tube-launched spacecraft use a launch tube to launch the spacecraft. It has many advantages such as high maneuverability and swarming capability. In order to adapt to this launch method, the tail rudder of the spacecraft generally adopts a folding rudder structure, which can greatly reduce the space occupied by the spacecraft itself. At this time, the folding rudder itself needs to have the functions of folding and unfolding. Before launch, the spacecraft is placed in the launch tube with the rudder in a folded state. After exiting the tube, the rudder automatically unfolds and locks under the action of the unfolding mechanism. Therefore, whether the unfolding function of the rudder can be successfully performed is a prerequisite for the successful launch of the spacecraft. To ensure the smooth operation of this mechanism, a ground deployment test of the folding rudder is usually required before the flight test. In order to realistically simulate the actual aerodynamic conditions, this test is usually carried out in a wind tunnel, and the actual working environment is simulated by setting the wind tunnel exhaust speed and the angle between the wind tunnel and the rudder. Patent application number CN202110644962.0 proposes a method and device for testing the deployment time of winglets in missile wings or rudder assemblies. The structure uses a cylindrical slide to fix four rudder blades at the same time, and drives the slide to move rapidly through a linear guide and lead screw mechanism to release the four rudder blades. This mechanism is suitable for situations where four rudder blades need to be tested simultaneously. In order to ensure that the four rudder blades are released at the same time, a high-precision linear guide and lead screw adjustment mechanism are required, which places high demands on the manufacturing of the device. In contrast, under normal circumstances, since the folding rudder structures used in aircraft are exactly the same, it is only necessary to test the deployment function of one of the folding rudders. The patent application with application number CN202110191842.X proposes a test device suitable for testing the deployment process of a single folding rudder. The design involves pressing one end of a pressure rod against the outer end of the folding rudder. During the test, a servo motor drives the pressure rod to slide, quickly releasing the folding rudder. The principle is simple, but this patent does not have a device for adjusting the angle formed by the rudder blade and the wind tunnel outlet. It relies on a turntable device inside the wind tunnel, but many wind tunnels do not have this device. Therefore, this test structure is limited by the test site conditions.

[0003] This invention proposes a folding rudder wind tunnel deployment test device, which is suitable for wind tunnel deployment tests of a single folding rudder. It has the function of adjusting the angle between the rudder blade and the air duct, is not limited by the test site conditions, has a simple structure, and is easy to operate. Utility Model Content

[0004] Objective: The purpose of this utility model is to provide a folding rudder wind tunnel deployment test device. This device is not limited by the test site conditions, has a simple structure, and is easy to operate.

[0005] Technical solution: The present invention provides a folding rudder wind tunnel deployment test device, comprising a base, a turntable on the base, a fixing plate on the turntable, a folding rudder to be tested placed on the fixing plate, a positioning rod next to the folding rudder to be tested, an electric cylinder below the positioning rod, a connecting plate on the side of the electric cylinder, and the connecting plate being connected to and fixed to the base.

[0006] Preferably, the base has a T-slot structure to support and fix the entire device, and the T-slot facilitates adjustment of the installation position; the turntable can rotate around its own axis to adjust the angle between the rudder and the air duct, and has circular through holes on its surface; the fixing plate has an L-shaped structure with circular through holes on both the upper and lower surfaces; the positioning rod is in the shape of angle steel, with a hemispherical protrusion on one side of the upper end to press the rudder and ensure quick disengagement before the rudder unfolds, and a vertical waist-shaped through hole on the other side of the lower end; the electric cylinder has a built-in telescopic rod that can be quickly extended and retracted, and has threads on the head and threaded holes on the bottom; the connecting plate has circular through holes on its vertical surface and waist-shaped through holes on its bottom surface.

[0007] Preferably, the turntable is fixed to the base with bolts; the lower surface of the fixing plate is fixed to the turntable with bolts, and the upper surface is fixed to the folding rudder to be tested with bolts; the upper hemispherical protrusion of the positioning rod presses against the side of the folding rudder to position the folding rudder, and the lower end is connected to the head of the electric cylinder telescopic rod with a nut, so that the positioning rod moves quickly when the electric cylinder telescopic rod extends or retracts; the bottom of the electric cylinder is connected to the vertical surface of the connecting plate with bolts; the connecting plate is connected to and fixed to the base with bolts.

[0008] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0009] 1. It uses standard parts and profile components in many places, resulting in a simple structure.

[0010] 2. The folding rudder is released by retracting the telescopic rod of the electric cylinder, making operation easy.

[0011] 3. It has a built-in turntable to adjust the angle between the rudder and the air duct, without being limited by the site. Attached Figure Description

[0012] Figure 1 A schematic diagram of a folding rudder wind tunnel deployment test device provided by this utility model.

[0013] Figure label:

[0014] 1-Base; 2-Turntable; 3-Fixing plate; 4-Folding rudder to be tested; 5-Positioning rod; 6-Electric cylinder; 7-Connecting plate. Detailed Implementation

[0015] Embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0016] like Figure 1 As shown, a folding rudder wind tunnel deployment test device includes a base 1, a turntable 2 on the base 1, a fixing plate 3 on the turntable 2, a folding rudder 4 to be tested placed on the fixing plate 3, a positioning rod 5 next to the folding rudder 4, an electric cylinder 6 below the positioning rod 5, and a connecting plate 7 below the electric cylinder 6, which is connected to the base 1. The base 1 has a T-slot structure; the turntable 2 can rotate around its own axis and has circular through holes on its surface; the fixing plate 3 has an L-shaped structure with circular through holes on both its upper and lower surfaces; the positioning rod 5 is in the shape of angle steel, with a hemispherical protrusion on one side of its upper end and a vertical waist-shaped through hole on the other side of its lower end; the electric cylinder 6 has a telescopic rod that can be quickly extended and retracted, and has a threaded head and a threaded hole at the bottom; the connecting plate 7 has a circular through hole on its vertical surface and a waist-shaped through hole on its bottom surface. Turntable 2 is fixed to base 1 by bolts; the lower surface of fixing plate 3 is fixed to turntable 2 by bolts, and the upper surface is fixed to the folding rudder 4 to be tested by bolts; the upper hemispherical protrusion of positioning rod 5 presses against the side of folding rudder 4, and the lower end is connected to the telescopic rod head of electric cylinder 6 by nuts; the bottom of electric cylinder 6 is connected to the vertical surface of connecting plate 7 by bolts; connecting plate 7 is connected to base 1 and fixed by bolts.

[0017] In use, first adjust the angle of the turntable 2 to achieve the required angle between the folding rudder 4 to be tested and the air duct. Press the hemispherical protrusion at the upper end of the positioning rod 5 onto the rudder plate of the folding rudder 4 to be tested. When the test starts, start the electric cylinder 6. The head telescopic rod retracts quickly and drives the positioning rod 5 to move quickly. The hemispherical protrusion disengages from the rudder plate of the folding rudder 4 to be tested. Observe whether the rudder plate can automatically spring open until it locks under the action of its own torsion spring and structure.

Claims

1. A device for wind tunnel deployment tests of folding rudders, comprising a base (1), characterised in that The base (1) is provided with a rotary table (2), the rotary table (2) is provided with a fixed plate (3), the fixed plate (3) is provided with a to-be-tested folding rudder (4), the to-be-tested folding rudder (4) is provided with a positioning rod (5), the positioning rod (5) is provided with an electric cylinder (6), the electric cylinder (6) is provided with a connecting plate (7), and the connecting plate (7) is connected with the base (1).

2. The device according to claim 1, wherein The base (1) is a T-shaped groove structure; the rotary table (2) can rotate around its own axis and is provided with a circular through hole on the surface; the fixed plate (3) is an L-shaped structure, and the upper surface and the lower surface are both provided with a circular through hole; the positioning rod (5) is an angle steel shape, the upper end of one side is a hemispherical protrusion, and the lower end of the other side is provided with a vertical waist-shaped through hole; the electric cylinder (6) is provided with a telescopic rod and can be quickly telescoped, and the head is provided with a thread, and the bottom is provided with a threaded hole; the connecting plate (7) is provided with a circular through hole on the vertical surface and a waist-shaped through hole on the bottom surface.

3. The device according to claim 2, wherein The rotary table (2) is fixed on the base (1) by bolts; the lower surface of the fixed plate (3) is fixed on the rotary table (2) by bolts, and the upper surface is connected with the to-be-tested folding rudder (4) by bolts; the upper end of the positioning rod (5) is pressed on the side surface of the folding rudder (4), and the lower end is connected with the telescopic rod head of the electric cylinder (6) through a nut; the bottom of the electric cylinder (6) is connected with the vertical surface of the connecting plate (7) through bolts; and the connecting plate (7) is connected with the base (1) through bolts and is fixed.

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