A subsatellite release structure

Abstract

The application discloses a kind of sub-satellite release structures, including parent satellite and sub-satellite, the parent satellite is constructed with containing cavity, and the outer wall of parent satellite is spaced apart with a plurality of release windows corresponding to the containing cavity, release assembly is arranged in the containing cavity, and release assembly includes release motor and connecting arm, the release motor is located in the center of the bottom plate of the containing cavity, and the output shaft of release motor is perpendicular to the plane where the bottom plate is located, the containing cavity is also arranged with guide vane in the position corresponding to release window stretchable;Sub-satellite is connected with the connecting arm by unlockable connecting piece.The beneficial effects of the above technical solution are: the release motor can drive the connecting arm to rotate, and then drive the sub-satellite to make circular motion in the containing cavity, when the speed reaches the predetermined requirement, open the target release window and the corresponding guide vane, unlock the connecting piece so that the sub-satellite can be thrown out of the release window, and then separate from the parent satellite to complete release.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of satellites, in particular to a sub-satellite release structure. BACKGROUND

[0002] An artificial satellite refers to an unmanned spacecraft that orbits the earth in a space orbit. The artificial satellite basically moves around the earth according to the law of celestial mechanics, but due to the influence of the non-spherical earth gravity field, atmospheric resistance, solar gravity, lunar gravity and light pressure in different orbits, the actual movement is very complex. Artificial satellites are the most numerous, most widely used and fastest developing spacecraft. The number of artificial satellite launches accounts for more than 90% of the total number of spacecraft launches. Artificial satellites can be divided into three categories: scientific satellites, technical test satellites and application satellites. Scientific satellites are satellites used for scientific exploration and research, mainly including space physics exploration satellites and astronomical satellites, which are used to study the atmosphere, radiation belt, magnetosphere, cosmic rays and solar radiation of a certain planet, and can observe other celestial bodies. Most artificial satellites in the world are artificial earth satellites, and there are also artificial Mars satellites. In order to better utilize satellites, one rocket with multiple satellites has been developed in the prior art, and a sub-satellite is released from a mother satellite in orbit to conduct more scientific research. For example, a separable micro-nano satellite configuration with publication number CN103612774A is composed of a satellite body, a separated and released sub-satellite, a mechanical net claw, a flexible solar cell array and a variable structure mechanical arm. The sub-satellite can be released, but the orientation of the sub-satellite during release is not convenient to control. SUMMARY

[0003] In view of the defects in the prior art, the present application provides a sub-satellite release structure which can select different release windows for release to control the release direction of the sub-satellite.

[0004] The technical scheme provided by the present application is as follows: a sub-satellite release structure, comprising a mother satellite and a sub-satellite, a containing cavity is formed in the mother satellite, a plurality of release windows are arranged on the outer wall of the mother satellite in correspondence with the containing cavity, a release assembly is arranged in the containing cavity, the release assembly comprises a release motor and a connecting arm, the release motor is located at the center of the bottom plate of the containing cavity, the output shaft of the release motor is perpendicular to the plane on which the bottom plate is located, the connecting arm is parallel to the plane on which the bottom plate is located, a guide plate is also arranged in the containing cavity in correspondence with the position of the release window and is arranged in an extendable and retractable manner, the guide plate extends from the tangent of the circle on which the connecting arm is located towards the edge of the release window; the sub-satellite is connected to the connecting arm through a unlockable connecting piece.

[0005] The beneficial effects of the above technical scheme are that the release motor is arranged to drive the connecting arm to rotate, and then drive the sub-satellite to make a circular motion in the accommodating cavity; when the speed reaches a predetermined requirement, the target release window and the corresponding guide plate are opened, the connecting piece is unlocked, so that the sub-satellite can be thrown out of the release window, and then separated from the mother satellite to complete the release.

[0006] Further, the outer wall of the mother satellite is rotationally provided with a cover body covering the release window. The cover body can keep the release window in a closed state.

[0007] Further, the bottom plate is provided with a notch for the guide plate to extend out, and the bottom plate is provided with a first hydraulic cylinder driving the guide plate. The first hydraulic cylinder is arranged to raise or lower the guide plate.

[0008] Further, the connecting piece includes a docking fork, the docking fork includes an upper fork arm and a lower fork arm, the upper fork arm and the lower fork arm are arranged at the end of the connecting arm, a docking space is defined between the upper fork arm and the lower fork arm, a second hydraulic cylinder is arranged on the upper fork arm, a lock rod extending through the upper fork arm and extending into the docking space is arranged on the second hydraulic cylinder, and a lock tongue extending into the docking space is arranged on the outer wall of the sub-satellite. A lock hole for the lock rod to insert is arranged on the lock tongue.

[0009] Further, the lower fork arm and the upper fork arm are provided with baffles on both sides. The baffles are arranged to increase the constraint between the sub-satellite and the connecting arm.

[0010] Further, a containing shell is arranged below the bottom plate, and an installation space for fixing the first hydraulic cylinder is enclosed between the containing shell and the bottom surface of the bottom plate.

[0011] Further, the plane enclosed by the release window is perpendicular to the guide plate.

[0012] Further, the release window has four or six, and the release windows are arranged at equal intervals.

[0013] Further, the lower fork arm is provided with a balance hole on the side facing the lock rod, and the balance hole is arranged opposite to the lock rod.

[0014] Further, the outer wall of the mother satellite is provided with a driving assembly driving the cover body, and the driving assembly includes a driving motor, and the driving motor is in transmission connection with the rotating shaft of the cover body. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0016] Figure 1 A structure schematic diagram of an embodiment of the present application is shown in FIG. 1.

[0017] Figure 2 A structure schematic diagram of an embodiment of the present application is shown in FIG. 1. Figure 1 An enlarged schematic diagram of A in FIG. 1 is shown in FIG. 2.

[0018] Figure 3 A structure schematic diagram of an embodiment of the present application is shown in FIG. 1.

[0019] Figure 4 A sectional view of a containing cavity in an embodiment of the present application is shown in FIG. 3.

[0020] Figure 5 A connection schematic diagram of a connecting arm and a sub-satellite in an embodiment of the present application is shown in FIG. 4.

[0021] The drawings are as follows: a mother satellite 100, a release window 110, a cover 111, a containing cavity 200, a bottom plate 210, a notch 211, a first hydraulic cylinder 300, a flow guide plate 310, a containing shell 320, a release motor 400, a connecting arm 410, an upper fork arm 411, a lower fork arm 412, a second hydraulic cylinder 413, a sub-satellite 500, a lock tongue 510. DETAILED DESCRIPTION

[0022] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0023] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the common meanings understood by the skilled in the art to which the present application belongs.

[0024] As Figures 1-5As shown, the embodiment provides a sub-satellite release structure, including a mother satellite 100 and a sub-satellite 500, the mother satellite 100 is internally configured with a containing cavity 200, the containing cavity 200 is formed by a top plate and a bottom plate 210 inside the mother satellite 100, a plurality of release windows 110 are arranged on the outer wall of the mother satellite 100 corresponding to the containing cavity 200, a release assembly is arranged in the containing cavity 200, the release assembly includes a release motor 400 and a connecting arm 410, the release motor 400 is located at the center of the bottom plate 210 of the containing cavity 200, and the output shaft of the release motor 400 is perpendicular to the plane where the bottom plate 210 is located, the connecting arm 410 is parallel to the plane where the bottom plate 210 is located, and the containing cavity 200 is also arranged with a flow guide plate 310 corresponding to the position of the release window 110, the flow guide plate 310 extends from the tangent of the circle where the connecting arm 410 is located to the edge of the release window 110; the sub-satellite 500 is connected with the connecting arm 410 through a unlockable connecting piece.

[0025] The connecting arm 410 adopts a linear state connecting frame, which is formed by splicing metal pipes, specifically, the connecting frame includes four cross beams, the four cross beams are distributed in a rectangular shape, a plurality of reinforcing rods are connected between the four cross beams, the reinforcing rods and the cross beams are distributed in a triangular shape, the triangular shape can improve the stability of the connecting frame, and the use of cross beams and reinforcing rods can reduce the weight of the connecting arm 410. Further, in order to improve the acceleration effect of the release motor 400 on the sub-satellite 500, the connecting arm 410 is arranged to gradually decrease in cross section from the motor to the sub-satellite 500.

[0026] In use, the release motor 400 arranged can drive the connecting arm 410 to rotate, thereby driving the sub-satellite 500 to make a circular motion in the containing cavity 200, when the speed reaches the predetermined requirement, the target release window 110 and the corresponding flow guide plate 310 are opened, the connecting piece is unlocked so that the sub-satellite 500 can be thrown out of the release window 110, thereby separating from the mother satellite 100 to complete the release.

[0027] When releasing the sub-satellite 500, a specified release window 110 can be selected for release, in order to reduce the influence of the external environment on the sub-satellite 500 before release, a cover 111 covering the release window 110 is arranged on the outer wall of the mother satellite 100. The cover 111 can keep the release window 110 in a closed state. Further, the outer wall of the mother satellite 100 is provided with a driving assembly for driving the cover 111, the driving assembly includes a driving motor, and the driving motor is connected with the transmission shaft of the cover 111.

[0028] The purpose of the deflector 310 is to guide the subsatellite 500 to the release window 110, avoiding the collision of the subsatellite 500 in the accommodation cavity 200 and unable to fly out from the release window 110. After the deflector 310 is lifted, the deflector 310 is located on the rotation path of the subsatellite 500, and at this time the connecting piece has been unlocked, so the deflector 310 will not collide with the subsatellite 500. In order to avoid the subsatellite 500 being blocked when normally rotating and accelerating, a notch 211 is opened on the bottom plate 210 for the deflector 310 to extend out. When the release condition is not reached or it is not corresponding to the selected release window 110, the deflector 310 needs to be completely submerged below the bottom plate 210, at least flush with the bottom plate 210 without protruding. The bottom of the bottom plate 210 is provided with a first hydraulic cylinder 300 for driving the deflector 310. The first hydraulic cylinder 300 is arranged to lift or lower the deflector 310. Further, a containing shell 320 is arranged below the bottom plate 210, and a mounting space for fixing the first hydraulic cylinder 300 is enclosed between the containing shell 320 and the bottom surface of the bottom plate 210.

[0029] The function of the connecting piece is to firmly connect the connecting arm 410 and the subsatellite 500 during rotation, and to quickly unlock when release is needed, so that the subsatellite 500 can fly out along the tangent of its rotation path. In order to achieve this purpose, the connecting piece is preferably composed of a docking fork, which includes an upper fork arm 411 and a lower fork arm 412. The upper fork arm 411 and the lower fork arm 412 are arranged at the end of the connecting arm 410 in a spaced manner, and a docking space is defined between the upper fork arm 411 and the lower fork arm 412. A second hydraulic cylinder 413 is arranged on the upper fork arm 411, and a lock rod is arranged on the second hydraulic cylinder 413 and extends through the upper fork arm 411 and into the docking space. The outer wall of the subsatellite 500 is provided with a lock tongue 510 capable of extending into the docking space, and the lock tongue 510 is provided with a lock hole for the lock rod to insert. Further, the lower fork arm 412 and the upper fork arm 411 are provided with baffles on both sides. The baffles can increase the constraint between the subsatellite 500 and the connecting arm 410. Further, a balance hole is arranged on the side of the lower fork arm 412 facing the lock rod, and the balance hole is opposite to the lock rod. After the lock rod passes through the lock tongue 510, it is inserted into the balance hole to fix the subsatellite 500.

[0030] The release window 110 is the last window for the subsatellite 500 to release into space. In order to ensure that the subsatellite 500 can smoothly fly out from the release window 110 after separating from the connecting arm 410 along the tangent of its rotation trajectory, in addition to the previously arranged deflector 310, the angle of the release window 110 is also optimized. Specifically, the release window 110 is arranged such that the plane enclosed by the release window 110 is perpendicular to the deflector 310.

[0031] In order to be able to carry out multi-azimuth release selection, the release windows 110 are arranged equidistantly with four or six release windows 110. When releasing, the optimal release window 110 can be selected according to the current attitude of the mother satellite 100 to ensure that the release of the sub-satellite 500 is more smooth.

[0032] In the description of the present application, it should be understood that the terms in the present application are only used for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the specification of the present application, a large number of specific details are explained. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, systems and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0035] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A subsatellite release structure, characterized in that, include: A mother satellite (100) has a housing cavity (200) inside. Multiple release windows (110) are spaced at intervals on the outer wall of the mother satellite (100) corresponding to the housing cavity (200). A release assembly is provided inside the housing cavity (200), including a release motor (400) and a connecting arm (410). The release motor (400) is located at the center of the bottom plate (210) of the housing cavity (200), and the output shaft of the release motor (400) is perpendicular to the plane of the bottom plate (210). The connecting arm (410) is parallel to the plane of the bottom plate (210). A guide plate (310) is also telescopically provided inside the housing cavity (200) at the position corresponding to the release windows (110). The guide plate (310) extends from the tangent of the circle containing the connecting arm (410) toward the edge of the release window (110). Sub-satellite (500), which is connected to the connecting arm (410) via an unlockable connector.

2. The sub-satellite release structure according to claim 1, characterized in that, The outer wall of the mother satellite (100) is rotatably provided with a cover (111) that covers the release window (110).

3. The sub-satellite release structure according to claim 1, characterized in that, The base plate (210) has a notch (211) for the guide plate (310) to extend out, and a first hydraulic cylinder (300) for driving the guide plate (310) is provided at the lower part of the base plate (210).

4. The sub-satellite release structure according to claim 1, characterized in that, The connector includes a docking fork, which includes an upper fork arm (411) and a lower fork arm (412). The upper fork arm (411) and the lower fork arm (412) are spaced apart at the ends of the connecting arm (410). A docking space is defined between the upper fork arm (411) and the lower fork arm (412). A second hydraulic cylinder (413) is provided on the upper fork arm (411). A locking rod is provided on the second hydraulic cylinder (413) that passes through the upper fork arm (411) and extends to the docking space. The outer wall of the sub-satellite (500) is provided with a locking tongue (510) that can extend into the docking space. The locking tongue (510) is provided with a locking hole for the locking rod to be inserted.

5. A sub-satellite release structure according to claim 4, characterized in that, The lower fork arm (412) and the upper fork arm (411) are provided with baffles on both sides.

6. A sub-satellite release structure according to claim 3, characterized in that, A receiving shell (320) is provided below the base plate (210), and the receiving shell (320) and the bottom surface of the base plate (210) enclose an installation space for fixing the first hydraulic cylinder (300).

7. A sub-satellite release structure according to claim 1, characterized in that, The plane enclosed by the release window (110) is perpendicular to the guide plate (310).

8. A sub-satellite release structure according to claim 1, characterized in that, The release window (110) has four or six, and the release windows (110) are arranged at equal intervals.

9. A sub-satellite release structure according to claim 4, characterized in that, The lower fork arm (412) is also provided with a balance hole on the side facing the locking rod, and the balance hole is set directly opposite the locking rod.

10. A sub-satellite release structure according to claim 2, characterized in that, The outer wall of the mother satellite (100) is provided with a drive assembly for driving the cover (111). The drive assembly includes a drive motor, which is connected to the rotating shaft of the cover (111) via a transmission.

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