Lateral force engine live wire jumping prevention groove structure

Abstract

The invention discloses an anti-jumping live wire groove structure of a lateral force engine. The anti-jumping live wire groove structure comprises an unlocking electric detonator, a spray pipe body, a fixed baffle ring, a skin and a square gasket, wherein the unlocking electric detonator is arranged in the spray pipe body; the fixed baffle ring is in contact with the unlocking electric detonator, and the outer ring surface of the fixed baffle ring is connected with the internal structure ring surface of the spray pipe body; the outer annular surface of the spray pipe body is connected with the inner annular surface of the skin; the square gasket is arranged on an unlocking cable of the unlocking electric detonator in a sleeving mode, and the square gasket is arranged in a square wire groove formed by the skin and the spray pipe body. According to the invention, the problem of fire spurting at the cable slot in the working process of the lateral force engine is solved.

Description

Technical Field

[0001] This invention belongs to the field of lateral force engine technology, and particularly relates to a lateral force engine anti-flare groove structure. Background Technology

[0002] In scenarios such as aircraft attitude control, trajectory correction, maneuvering, and precision guidance, lateral thrust engines, with their high maneuverability and hypersonic capabilities, have always been an indispensable component. When a lateral thrust engine ignites, it generates high-temperature, high-pressure combustion gases. Existing cable tray structures are not adequately sealed at cable and connector interfaces, allowing these gaps to become channels for the flame and high-temperature combustion gases under these conditions. This can cause the high-temperature, high-speed flame from the lateral thrust engine to propagate outwards along any possible gaps or channels, leading to arcing (flame spreading along the cable). Furthermore, lateral thrust engines are typically compact, requiring cables to be densely arranged within a limited space. Traditional loose wiring is susceptible to interference from the engine's high-temperature exhaust, further increasing the probability of arcing during engine operation. Summary of the Invention

[0003] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a lateral force engine anti-flame-spreading cable trough structure. It actively prevents the spread of flames along the gaps inside and outside the cable through physical isolation, fundamentally cutting off the path of flames and high-temperature gas spreading along the gaps inside and outside the cable, realizing the core function of "anti-flame-spreading", and solving the problem of flame spread at the cable trough during the operation of the lateral force engine.

[0004] The objective of this invention is achieved through the following technical solution: a lateral force engine anti-flare groove structure, comprising: an unlocking electric detonator, a nozzle body, a fixing retaining ring, a skin, and a square washer; wherein, the unlocking electric detonator is disposed inside the nozzle body; the fixing retaining ring is in contact with the unlocking electric detonator, and the outer ring surface of the fixing retaining ring is connected to the inner structural ring surface of the nozzle body; the outer ring surface of the nozzle body is connected to the inner ring surface of the skin; the square washer is fitted onto the unlocking cable of the unlocking electric detonator, and the square washer is disposed within the square groove formed by the skin and the nozzle body.

[0005] In the aforementioned lateral force engine anti-flame-spreading cable groove structure, the unlocking electric detonator is an unlocking electric detonator with a cable.

[0006] In the above-mentioned anti-flame-spreading wire groove structure for lateral force engine, the fixed retaining ring presses and fixes the unlocking electric detonator, thereby achieving a fixed connection between the nozzle body and the fixed retaining ring.

[0007] In the above-mentioned anti-flame-spillage groove structure for lateral force engines, the nozzle body and the fixed retaining ring are connected by threads.

[0008] In the aforementioned anti-flare-upline groove structure for the lateral force engine, the skin and the nozzle body are connected by screws.

[0009] In the aforementioned lateral force engine anti-flame-spreading cable groove structure, the unlocking cable of the unlocking electric detonator is circumferentially wrapped by the square washer.

[0010] In the above-mentioned anti-flame-spreading groove structure for the lateral force engine, the unlocking cable of the unlocking electric detonator is located on the innermost side, followed by the square washer on the outer side, and then the square groove formed by the skin and the nozzle body on the outermost side. The square washer fills the space of the square groove formed by the skin and the nozzle body.

[0011] In the above-mentioned anti-flame-spreading cable groove structure of the lateral force engine, when the lateral force engine is working, the unlocking action of the unlocking electric detonator with cable is completed first, and then the high temperature and high pressure gas in the combustion chamber is ejected from the nozzle of the nozzle body, thereby generating the required lateral force.

[0012] In the aforementioned lateral force engine anti-flame-spreading wire groove structure, the number of the fixed retaining rings is equal to the number of the unlocking electric detonator.

[0013] In the aforementioned anti-flame-spillage groove structure for lateral force engines, the number of skins is two.

[0014] In the aforementioned anti-flare-up wiring structure for the lateral force engine, the relationship between the nozzle exit jet velocity and thrust of the nozzle body and the initial end diameter and unlocking force of the unlocking electric detonator is as follows:

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021] Among them, u e R0 is the jet velocity at the nozzle, k is the specific heat ratio of the gas, and R0 is the universal gas constant. T represents the average molecular weight of the gas. f p is the temperature of the combustion gas inside the nozzle. e p is the nozzle exit pressure. cThe internal pressure of the nozzle body, F is the thrust at the nozzle exit, and C is the pressure within the nozzle body. F A is the thrust coefficient. t A is the area of ​​the nozzle throat of the nozzle body. e Let p1 be the nozzle exit area of ​​the nozzle body, F1 be the pressure on the unlocking electro-detonating tube, F1 be the unlocking force on the unlocking electro-detonating tube, and A1 be the initial end face area of ​​the unlocking electro-detonating tube, which is the force-bearing area of ​​the unlocking electro-detonating tube. a Atmospheric pressure.

[0022] Compared with the prior art, the present invention has the following advantages: The anti-flame-spreading cable tray structure for lateral force engines of the present invention uses a square washer to fill the entire three-dimensional space of the cable tray, while the cable passes through the central hole of the square washer and is fully wrapped and protected. This achieves an ultimate sealing and barrier effect between the cable and the engine structure, fundamentally cutting off the path of flame and high-temperature gas spreading along the gaps inside and outside the cable. This solves the problems of insufficient sealing at the interface of traditional cable wiring and connectors in lateral force engines, and flame spread at the cable tray during ignition. Attached Figure Description

[0023] 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: Figure 1 This is a schematic diagram of the overall structure of the anti-flame-spillage cable groove structure for a lateral force engine provided in an embodiment of the present invention; Figure 2 A schematic cross-sectional view of the internal structure of the anti-flame-spillage groove structure for a lateral force engine provided in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the relationship between the nozzle body and the unlocking electric detonation tube provided in an embodiment of the present invention. Detailed Implementation

[0024] 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.

[0025] Lateral thrust engines generate complex mechanical environments and high-temperature exhaust flows during operation. Anti-flame-spreading cable trays are crucial for ensuring system reliability and safety, and are an indispensable part of lateral thrust engine design. Under extreme conditions, the lack of such protection can lead to catastrophic consequences (such as control failure caused by cable short circuits). Therefore, it is urgent to design anti-flame-spreading cable tray structures according to the type of lateral thrust engine and environmental requirements to meet future development needs.

[0026] Figure 1 This is a schematic diagram of the overall structure of the anti-flame-spillage cable groove structure for a lateral force engine provided in an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of the internal structure of the anti-flare-up channel structure for a lateral force engine provided in an embodiment of the present invention. (See attached diagram.) Figure 1 and Figure 2 As shown, the anti-flare cable tray structure for the lateral force engine includes: an unlocking electric detonator 1, a nozzle body 2, a fixing ring 3, a skin 4, and a square washer 5. The unlocking electric detonator 1 is located inside the nozzle body 2. The fixing ring 3 contacts the unlocking electric detonator 1, and its outer ring surface is connected to the inner structural ring surface of the nozzle body 2. The outer ring surface of the nozzle body 2 is connected to the inner ring surface of the skin 4. The square washer 5 is fitted onto the unlocking cable of the unlocking electric detonator 1 and is located within the square cable tray formed by the skin 4 and the nozzle body 2. The unlocking electric detonator 1 is an unlocking electric detonator with a cable attached.

[0027] The fixed retaining ring 3 presses and secures the unlocking electric detonator 1, thus achieving a fixed connection between the nozzle body 2 and the fixed retaining ring 3. The nozzle body 2 and the fixed retaining ring 3 are connected by threads.

[0028] The skin covers the outer diameter of the nozzle body, and the skin is connected to the nozzle body by screws.

[0029] The unlocking cable of the unlocking electric detonator 1 is wrapped around the square washer 5.

[0030] The unlocking cable of the unlocking electric detonator 1 is located at the innermost edge, followed by a square washer 5 on the outer edge, and then a square groove formed by the skin 4 and the nozzle body 2 on the outer edge. The square washer 5 fills the space of the square groove formed by the skin 4 and the nozzle body 2. The unlocking cable of the unlocking electric detonator with cable will pass through the square groove. The square washer is fitted onto the unlocking cable of the unlocking electric detonator with cable, serving to wrap and protect the unlocking cable. The square washer begins to wrap and protect the unlocking cable from near the root of the unlocking cable of the unlocking electric detonator.

[0031] When the lateral force engine is working, the unlocking action of the cable-connected electric detonator 1 is completed first. Then, the high-temperature and high-pressure gas in the combustion chamber is ejected from the nozzle of the nozzle body 2, thereby generating the required lateral force. Throughout the operation of the lateral force engine, the square gasket isolates the unlocking cable from heat radiation and heat transfer, preventing damage to the unlocking cable and the flame spike caused by the combustion flame inside the lateral force engine escaping from the cable groove. This protects the structure of the lateral force engine from being burned or damaged, mainly in the area around the square cable groove, including the nozzle body 2 and the skin 4.

[0032] The number of retaining rings is equal to the number of unlocking electric detonators. There are two skins.

[0033] The unlocking detonator with cable comes with an unlocking cable, enabling the lateral force engine to be unlocked. The number of unlocking detonators with cable can be selected up to six; it should be understood that the number can be determined according to actual needs.

[0034] like Figure 1 , Figure 2 As shown, firstly, the unlocking electric detonator 1 with cable is placed inside the nozzle body 2 and pressed tightly. Secondly, the lower end face of the fixing ring 3 is brought into contact with the upper end face of the lug of the unlocking electric detonator 1 with cable, and the unlocking cable is passed through the hole in the middle of the fixing ring 3. Then, the outer ring surface of the fixing ring 3 is threaded to the nozzle body 2. Next, the skin 4 is wrapped around the outer ring surface of the nozzle body 2 and screwed in. Finally, the square washer 5 is placed on the unlocking cable of the unlocking electric detonator 1 with cable, and pushed into the square groove formed by the nozzle body 2 and the skin 4, ensuring that the square groove covers the area near the cable outlet root of the unlocking electric detonator. Thus, the installation of a lateral force engine anti-flame-spillage groove structure is completed. Figure 1 The unlocking electric detonator with cable is pressed and fixed to the nozzle body by a fixing retaining ring. The fixing retaining ring is connected to the nozzle body by a thread. The skin is fastened to the nozzle body by screws. The square washer is fixed to the nozzle body and the skin by filling the groove with rubber compression preload.

[0035] The relationship between the jet velocity and thrust at the nozzle exit of the nozzle body 2 and the initial end diameter and unlocking force of the unlocking electric detonator 1 is as follows:

[0036]

[0037]

[0038]

[0039]

[0040]

[0041]

[0042] Among them, u e Let be the jet velocity at nozzle 2, k be the specific heat ratio of the gas, and R0 be the universal gas constant. T represents the average molecular weight of the gas. f p is the temperature of the combustion gas inside nozzle body 2. e p is the nozzle exit pressure. c The internal pressure of nozzle body 2, F is the thrust at the nozzle exit of nozzle body 2, C F A is the thrust coefficient. t Let A be the area of ​​the nozzle throat of nozzle body 2. e Let p1 be the nozzle exit area of ​​nozzle body 2, p1 be the pressure on unlocking electric detonator 1, F1 be the unlocking force on unlocking electric detonator 1, and A1 be the initial end face area of ​​unlocking electric detonator 1, which is the force-bearing area of ​​unlocking electric detonator 1. a Atmospheric pressure. See Figure 3 .

[0043] The formula shows the influence of jet velocity u. e The factors include two aspects: the performance of the propellant (reflected in the gas temperature T) f Specific heat ratio k, average molecular weight of fuel gas The ratio of the expansion pressure of the nozzle to p) e / p c C F It is a dimensionless coefficient, which is actually a magnification factor. Due to the expansion of the gas in the nozzle body 2, the thrust increases to (p c A t C F times, C F The larger the value, the more complete the gas expansion; therefore, it is a parameter characterizing nozzle performance. (Based on F1 and A...) t From the relationship between F1 and F, and between F1 and A1, we can see that the unlocking area A1 of the unlocking electric detonator 1 and the outer dimensions of the unlocking electric detonator 1 are related to the throat area of ​​the nozzle body 2. The throat design of the nozzle body 2 needs to be considered in conjunction with the outer dimensions of the unlocking electric detonator 1.

[0044] In this embodiment, the lateral force engine unlocking operation is achieved by unlocking the detonating tube through current ignition. Subsequently, the onboard computer issues a lateral force engine ignition command, the engine ignites, and generates the required lateral direct force on the missile body for orbital control maneuvering.

[0045] The anti-flame-spreading cable tray structure of the lateral force engine in this embodiment uses a square washer to fill the entire three-dimensional space of the cable tray. At the same time, the cable passes through the central hole of the square washer and is fully wrapped and protected. This achieves an ultimate sealing and barrier effect between the cable and the engine structure, fundamentally cutting off the path of flame and high-temperature gas spreading along the gaps inside and outside the cable. This solves the problems of insufficient sealing at the interface of traditional cable wiring and connectors in lateral force engines and flame spread at the cable tray during ignition.

[0046] 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 lateral force engine anti-flare-up wiring groove structure, characterized in that... include: Unlock the electric detonation tube (1), nozzle body (2), fixing retaining ring (3), skin (4), and square washer (5); among which, The unlocking electric detonator (1) is disposed inside the nozzle body (2); The fixed retaining ring (3) is in contact with the unlocking electric detonator (1), and the outer ring surface of the fixed retaining ring (3) is connected to the inner structural ring surface of the nozzle body (2); The outer annular surface of the nozzle body (2) is connected to the inner annular surface of the skin (4); The square washer (5) is fitted onto the unlocking cable of the unlocking electric detonator (1), and the square washer (5) is disposed in the square groove formed by the skin (4) and the nozzle body (2).

2. The anti-flare-up wiring groove structure for a lateral force engine according to claim 1, characterized in that: The unlocking electric detonator (1) is an unlocking electric detonator with a cable.

3. The anti-flare-up wiring groove structure for a lateral force engine according to claim 1, characterized in that: The fixed retaining ring (3) presses and fixes the unlocking electric detonator (1), and realizes the fixed connection between the nozzle body (2) and the fixed retaining ring (3).

4. The anti-flare-up wiring groove structure for a lateral force engine according to claim 2, characterized in that: The nozzle body (2) is connected to the fixed retaining ring (3) by a thread.

5. The anti-flare-up wiring groove structure for a lateral force engine according to claim 1, characterized in that: The skin (4) is connected to the nozzle body (2) by screws.

6. The anti-flare-up wiring groove structure for a lateral force engine according to claim 1, characterized in that: The unlocking cable of the unlocking electric detonator (1) is wrapped around the square washer (5).

7. The anti-flare-up wiring groove structure for a lateral force engine according to claim 6, characterized in that: The unlocking cable of the unlocking electric detonator (1) is located on the innermost side, followed by the square washer (5) on the outer side, and then the square groove formed by the skin (4) and the nozzle body (2) on the outer side. The square washer (5) fills the space of the square groove formed by the skin (4) and the nozzle body (2).

8. The anti-flare-up wiring groove structure for a lateral force engine according to any one of claims 1-6, characterized in that: When the lateral force engine is working, the unlocking action of the cable-connected unlocking electric detonator (1) is completed first, and then the high temperature and high pressure gas in the combustion chamber is ejected from the nozzle of the nozzle body (2), thereby generating the required lateral force.

9. The anti-flare-up wiring groove structure for a lateral force engine according to claim 1, characterized in that: The number of the fixed retaining rings is equal to the number of the unlocking electric detonating tubes.

10. The anti-flare-up wiring groove structure for a lateral force engine according to claim 1, characterized in that: The relationship between the jet velocity and thrust at the nozzle exit of the nozzle body (2) and the initial end diameter and unlocking force of the unlocking electric detonator (1) is as follows: Among them, u e The nozzle velocity is given by (2), k is the specific heat ratio of the gas, and R0 is the universal gas constant. T represents the average molecular weight of the gas. f p is the temperature of the combustion gas inside the nozzle body (2). e p is the nozzle exit pressure. c The internal pressure of the nozzle body (2), F is the thrust at the nozzle exit of the nozzle body (2), and C is the pressure inside the nozzle body (2). F A is the thrust coefficient. t A is the area of ​​the nozzle throat of the nozzle body (2). e Let p1 be the nozzle exit area of ​​the nozzle body (2), p1 be the pressure on the unlocking electric detonator (1), F1 be the unlocking force on the unlocking electric detonator (1), and A1 be the initial end face area of ​​the unlocking electric detonator (1). a Atmospheric pressure.

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