A device for placing a stationary satellite thruster

Abstract

The application discloses a device for placing a fixed satellite thruster, comprising a tool base plate, two slide rail pressing plates, two tool handles, a thruster adapter interface anti-collision support and a thruster cable lead fixing nylon base; wherein the two slide rail pressing plates are arranged on the tool base plate; each tool handle is arranged on the slide rail pressing plate corresponding to each tool handle; the bottom end of the thruster adapter interface anti-collision support is arranged in a hidden groove between the tool base plate and the slide rail pressing plate, and the thruster adapter interface anti-collision support can move along the length direction of the hidden groove; the thruster cable lead fixing nylon base is arranged on the side wall of the thruster adapter interface anti-collision support; and the flange interface of the thruster adapter interface anti-collision support is connected with the thruster body. The application has the advantages of being firm and stable, can ensure that the thruster is placed vertically, has sufficient operation space in the heat control implementation process, and can effectively avoid the risk that the thruster skin is knocked by external force.

Description

Technical Field

[0001] This invention belongs to the field of spacecraft thruster environmental tooling technology, and particularly relates to a device for placing and fixing satellite thrusters. Background Technology

[0002] The thruster is a crucial component of the spacecraft's attitude control subsystem, responsible for adjusting the spacecraft's attitude and orbit after launch and entry into orbit. Currently, during the thermal control implementation process, the thruster is placed vertically for thermal control operations. Because the thruster casing is made of micron-sized stainless steel skin, it is highly susceptible to external impacts, and the thruster must not be inverted according to specifications. Furthermore, the operation of the thruster's thermal control involves complex procedures: applying adhesive, attaching, pressurizing, and fixing heating elements; attaching, dispensing adhesive, and fixing thermistors; and soldering lead wires.

[0003] Therefore, the operators manually make antistatic foam, dig a hole in the center, and place it vertically for operation. This situation is unstable, the relative position of the thruster body is not fixed, and it is unreliable. After the adhesive layer of the thruster body is cured after the thermal control is implemented, there is no special storage device, which can easily cause the thruster to be bumped or damaged and fail to meet the performance requirements. Summary of the Invention

[0004] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a device for placing and fixing satellite thrusters. It has the advantages of being reliable and stable, ensuring that the thrusters are placed vertically, providing operators with sufficient operating space during subsequent thermal control of the main body, and effectively avoiding the risk of the thruster skin being bumped by external forces.

[0005] The objective of this invention is achieved through the following technical solution: a device for placing and fixing a satellite thruster, comprising: a tooling base plate, two slide rail plates, two tooling handles, a thruster adapter interface anti-collision bracket, and a thruster cable lead fixing nylon base; wherein, the two slide rail plates are disposed on the tooling base plate, and the two slide rail plates are arranged in parallel, one slide rail plate is located on one side of the tooling base plate, and the other slide rail plate is located on the other side of the tooling base plate; each tooling handle is disposed on a slide rail plate corresponding to each tooling handle; the bottom end of the thruster adapter interface anti-collision bracket is disposed in a groove between the tooling base plate and the slide rail plates, and the thruster adapter interface anti-collision bracket can move along the length direction of the groove; the thruster cable lead fixing nylon base is disposed on the side wall of the thruster adapter interface anti-collision bracket; the flange interface of the thruster adapter interface anti-collision bracket is connected to the thruster body.

[0006] The aforementioned device for placing and fixing satellite thrusters also includes: two tooling grounding stakes; wherein each tooling grounding stake is disposed on a slide rail pressure plate corresponding to each tooling grounding stake.

[0007] The aforementioned device for placing and fixing satellite thrusters further includes: a locking screw; wherein the locking screw is used to limit and lock the thruster adapter interface anti-collision bracket.

[0008] In the aforementioned device for placing and fixing satellite thrusters, the tooling base plate is made of aluminum alloy.

[0009] In the aforementioned device for placing and fixing satellite thrusters, the slide rail pressure plate is made of aluminum alloy.

[0010] In the aforementioned device for placing and fixing satellite thrusters, the thruster adapter interface anti-collision bracket is made of aluminum alloy.

[0011] In the aforementioned device for placing and fixing satellite thrusters, the tool handle is made of aluminum alloy.

[0012] In the aforementioned device for placing and fixing satellite thrusters, the tooling grounding stake is made of copper-plated gold material.

[0013] In the aforementioned device for placing and fixing satellite thrusters, the nylon base for fixing the thruster cable leads is made of nylon material.

[0014] In the aforementioned device for placing and fixing satellite thrusters, there are multiple anti-collision brackets for the thruster adapter interface.

[0015] In the aforementioned apparatus for mounting a fixed satellite thruster, the strength of the apparatus is guaranteed by the following relationship:

[0016]

[0017] Where σ is the pressure intensity borne by the device used to place the fixed satellite thruster, and F b F is the longitudinal force exerted by a single thruster on the apparatus used to house the thrusters of a fixed satellite. r The indirect longitudinal pressure applied during the thermal control process is denoted as n, which represents the number of thrusters and the number of anti-collision brackets for the thruster adapter interface. R and r represent the large and small radii of the annulus formed by the contact between the thruster flange end face and the anti-collision bracket for the thruster adapter interface, respectively. σ0 represents the allowable tensile and compressive strength of the material used in the device for placing and fixing the satellite thrusters.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) The present invention adopts a thruster adapter interface anti-collision bracket. When the thruster body is installed, it is positioned by pins and locked by screws. The thruster body is not bumped by external forces in the bracket and is not inverted. Compared with the traditional manual self-made antistatic foam with a hole in the center and vertical placement, it can effectively ensure the safety of the thruster body and improve work efficiency.

[0020] (2) The thruster of the present invention has sufficient space on the bracket for separate thermal control. When the adhesive layer is cured after the implementation is completed, the bracket can be slid into the slide rail platform for safe storage and connected to a dedicated grounding pile, thus meeting the anti-static requirements of the thruster.

[0021] (3) The auxiliary parking device implemented by the thermal control of this satellite thruster in this invention is safe and reliable for the product itself. During operation, the thruster position is stable, the operation is more precise, and there is less risk of collision with the thruster body. It meets the various performance requirements of the satellite thruster and has the advantages of convenient installation and use. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of the device for placing a fixed satellite thruster provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram showing the connection between the thruster adapter interface anti-collision bracket and the thruster body provided in this embodiment of the invention;

[0025] Figure 3 This is a schematic diagram of the connection between the tooling base plate and the slide rail pressure plate provided in an embodiment of the present invention;

[0026] Figure 4 This is a top view of the thruster adapter interface anti-collision bracket provided in an embodiment of the present invention. Detailed Implementation

[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary 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 to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a schematic diagram of the structure of the device for placing a fixed satellite thruster provided in an embodiment of the present invention; Figure 2 This is a schematic diagram showing the connection between the thruster adapter interface anti-collision bracket and the thruster body provided in this embodiment of the invention; Figure 3 This is a schematic diagram showing the connection between the tooling base plate and the slide rail pressure plate provided in an embodiment of the present invention. Figure 1 , Figure 2 and Figure 3 As shown, the device for placing and fixing satellite thrusters is characterized by comprising: a tooling base plate 1, two slide rail pressure plates 2, two tooling handles 3, a thruster adapter interface anti-collision bracket 4, and a thruster cable lead fixing nylon base 6; wherein,

[0029] Two slide rail pressure plates 2 are disposed on the tooling base plate 1, wherein the two slide rail pressure plates 2 are arranged in parallel, one slide rail pressure plate 2 is located on one side of the tooling base plate 1, and the other slide rail pressure plate 2 is located on the other side of the tooling base plate 1; each tooling handle 3 is disposed on the slide rail pressure plate 2 corresponding to each tooling handle 3; the bottom end of the thruster adapter interface anti-collision bracket 4 is disposed in the groove between the tooling base plate 1 and the slide rail pressure plate 2, and the thruster adapter interface anti-collision bracket 4 can move along the length direction of the groove; the thruster cable lead fixing nylon base 6 is disposed on the side wall of the thruster adapter interface anti-collision bracket 4; the flange interface of the thruster adapter interface anti-collision bracket 4 is connected to the thruster body 5.

[0030] like Figure 1 As shown, the device for placing and fixing the satellite thruster also includes two tooling grounding stakes 7; wherein each tooling grounding stake 7 is disposed on a slide rail pressure plate 2 corresponding to each tooling grounding stake 7.

[0031] The tooling handle 3 and the tooling grounding stake 7 are threaded to the slide rail pressure plate 2, which is threaded onto the tooling base plate 1. The thruster cable lead fixing nylon base 6 is threaded to both sides of the thruster adapter interface anti-collision bracket 4. The thruster body 5 is connected to the flange interface of the thruster adapter interface anti-collision bracket 4 via a positioning pin 8 and two screws. This forms two assemblies (base plate slide rail assembly and bracket assembly). The four bracket assembly thrusters can be thermally controlled individually and then pushed into the base plate slide rail assembly for locking; alternatively, they can all be pushed into the assembly for locking before thermal control.

[0032] When multiple thruster adapter interface anti-collision brackets 4 are installed on the tooling base plate 1, and multiple thrusters are correspondingly installed on the thruster adapter interface anti-collision brackets 4, the multiple thrusters exert a certain longitudinal pressure on the entire device mechanism. At the same time, during the thermal control of the thrusters, a certain pressure may also be indirectly applied. The strength of the entire device is guaranteed by the following relationship:

[0033]

[0034] Because of the consideration that a certain indirect longitudinal pressure F is applied during the thermal control implementation process. r Let F be the value of F. r Satisfy F r <100N, the constraint relationship becomes:

[0035]

[0036] Where σ is the pressure intensity borne by the entire device, F b Let n be the longitudinal force exerted by a single thruster on the entire device, n be the number of thrusters and the number of thruster adapter interface anti-collision brackets 4, and R and r be the major circle radius R and minor circle radius r of the approximately formed annulus when the thruster flange end face contacts the thruster adapter interface anti-collision bracket 4. Figure 4 As shown, σ0 is the allowable tensile and compressive strength of the material used in the device. Through the calculation of the formula, the entire device meets the load strength requirements during operation and is reliable, stable and effective during use.

[0037] The slide rail pressure plate 2 has evenly distributed threaded bottom holes. When the bracket assembly slides into the base plate slide rail assembly, it can be fixed and locked by screws passing through the threads of the slide rail pressure plate 2.

[0038] The tooling substrate 1 was punched to reduce weight, thus reducing the weight of the entire device.

[0039] In this invention, the substrate slide rail assembly and the bracket assembly adopt a slide rail method.

[0040] The satellite thruster is installed to a single thruster bracket via a screw connection (one pin for positioning and two screws for locking), ensuring a reliable connection. The thruster cable plug can be installed at the lead wire fixing nylon base.

[0041] Operators perform thermal control procedures on the thruster body: applying adhesive, attaching, and pressurizing the thruster heating elements. After pressurization, the thruster support assembly can be placed independently on the slide rail platform base to cure the adhesive layer on the heating elements. After the adhesive layer has cured, the heating element leads are soldered and fixed, and the thermistors are attached, glued, fixed, and soldered. This process is repeated for subsequent batches of thrusters to implement thermal control procedures.

[0042] During this process, each thruster is installed in a vertically stable individual bracket, ensuring it is never inverted. The thruster cable is secured to a fixed mounting bracket, and the thruster is protected from external impacts within the bracket's protective range. This provides operators with a stable and reliable operating platform. Sufficient individual bracket workstations and storage platforms are available for batch thermal control implementation. The slide rail platform is equipped with two grounding posts, ensuring continuous grounding during operation and meeting the equipment's anti-static requirements.

[0043] In the auxiliary parking device for the thermal control of the satellite thruster, the tooling base plate and the slide rail pressure plate are connected by stainless steel screws to form a dark groove. The thruster adapter interface anti-collision bracket can slide through the dark groove and is locked by locking screws. The thruster adapter flange matches the thruster body interface.

[0044] The tooling base plate, slide rail pressure plate, thruster adapter interface anti-collision bracket, and tooling handle are all made of aluminum alloy, while the connecting screws and pins are all made of stainless steel.

[0045] The grounding stake is made of gold-plated copper. The nylon base for fixing the thruster cable leads is made of nylon.

[0046] This invention employs a thruster adapter interface anti-collision bracket. The thruster body is positioned using pins and locked with screws during installation, preventing external impacts and inversion of the thruster body within the bracket. Compared to traditional manual methods of placing the thruster body vertically with a hole drilled in the center of antistatic foam, this effectively ensures the safety of the thruster body and improves work efficiency. The thruster in this invention has sufficient space on the bracket for independent thermal control. After the thermal control is completed and the adhesive layer is cured, the bracket can slide into a sliding rail platform for secure storage and connection to a dedicated grounding stake, meeting the antistatic requirements of the thruster. This invention utilizes an auxiliary parking device for the satellite thruster's thermal control, ensuring product safety and reliability. During operation, the thruster position remains stable, allowing for more precise operation and reducing the risk of impacts to the thruster body. It meets all the performance requirements of satellite thrusters and offers advantages such as ease of installation and use.

[0047] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A device for mounting a fixed satellite thruster, characterized in that... include: The tooling base plate (1), two slide rail pressure plates (2), two tooling handles (3), a thruster adapter interface anti-collision bracket (4), and a thruster cable lead fixing nylon base (6); among which, Two slide rail pressure plates (2) are disposed on the tooling base plate (1), wherein the two slide rail pressure plates (2) are arranged in parallel, one slide rail pressure plate (2) is located on one side of the tooling base plate (1), and the other slide rail pressure plate (2) is located on the other side of the tooling base plate (1). Each tool handle (3) is set on the slide rail pressure plate (2) corresponding to each tool handle (3); The bottom end of the thruster adapter interface anti-collision bracket (4) is set in the dark groove between the tooling base plate (1) and the slide rail pressure plate (2), and the thruster adapter interface anti-collision bracket (4) can move along the length direction of the dark groove. The thruster cable lead fixing nylon base (6) is set on the side wall of the thruster adapter interface anti-collision bracket (4); The flange interface of the thruster adapter interface anti-collision bracket (4) is connected to the thruster body (5).

2. The device for placing a fixed satellite thruster according to claim 1, characterized in that... It also includes: two tooling grounding stakes (7); among which, Each tooling grounding stake (7) is set on the slide rail pressure plate (2) corresponding to each tooling grounding stake (7).

3. The apparatus for placing a fixed satellite thruster according to claim 1, characterized in that... Also includes: Locking screws; among which, The locking screw is used to limit and lock the anti-collision bracket (4) of the thruster adapter interface.

4. The device for placing a fixed satellite thruster according to claim 1, characterized in that: The tooling substrate (1) is made of aluminum alloy.

5. The apparatus for placing a fixed satellite thruster according to claim 1, characterized in that: The slide rail pressure plate (2) is made of aluminum alloy.

6. The apparatus for placing a fixed satellite thruster according to claim 1, characterized in that: The thruster adapter interface anti-collision bracket (4) is made of aluminum alloy.

7. The apparatus for placing a fixed satellite thruster according to claim 1, characterized in that: The tool handle (3) is made of aluminum alloy.

8. The apparatus for placing a fixed satellite thruster according to claim 2, characterized in that: The grounding stake (7) of the tooling is made of copper-plated gold material.

9. The apparatus for placing a fixed satellite thruster according to claim 1, characterized in that: The nylon base (6) for fixing the thruster cable lead is made of nylon material.

10. The apparatus for placing a fixed satellite thruster according to claim 1, characterized in that: The strength of the device for mounting the fixed satellite thruster is guaranteed by the following relationship: Where σ is the pressure intensity borne by the device used to place the fixed satellite thruster, and F b F is the longitudinal force exerted by a single thruster on the apparatus used to house the thrusters of a fixed satellite. r The indirect longitudinal pressure applied during the thermal control process is denoted as n, which represents the number of thrusters and the number of anti-collision brackets for the thruster adapter interface. R and r represent the large and small radii of the annulus formed by the contact between the thruster flange end face and the anti-collision bracket for the thruster adapter interface, respectively. σ0 represents the allowable tensile and compressive strength of the material used in the device for placing and fixing the satellite thrusters.

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