CN105371710A - Guided-missile high-speed water entering method based on reverse gas injection - Google Patents

Abstract

Translated fromChinese

本发明提供的是一种基于反向喷气的导弹高速入水方法，可以为导弹高速入水提供保护，避免由于高速导弹入水时巨大的冲击力对导弹造成破坏。该发明主要由燃气发生器、拉瓦尔喷管及长尾管组成。将燃气发生器安装在导弹内部，拉法尔喷管安装在导弹头部，通过长尾管将拉瓦尔喷管及燃气发生器相连。入水前，燃气发生器开始工作，产生的大量气体通过长尾管进入拉瓦尔喷管，经过拉瓦尔喷管加速到超音速喷出。导弹入水时，由拉瓦尔喷管喷出的气体将导弹包裹住，对导弹进行保护。本发明方法简单，可靠性高，保护效果好。

The invention provides a high-speed water entry method for missiles based on reverse air jet, which can provide protection for missiles entering water at high speed and avoid damage to missiles caused by huge impact force when high-speed missiles enter water. The invention mainly consists of a gas generator, a Laval nozzle and a long tail pipe. The gas generator is installed inside the missile, the Laval nozzle is installed on the missile head, and the Laval nozzle and the gas generator are connected through a long tail pipe. Before entering the water, the gas generator starts to work, and a large amount of gas generated enters the Laval nozzle through the long tail pipe, and is accelerated to supersonic speed through the Laval nozzle. When the missile enters the water, the gas ejected from the Laval nozzle will wrap the missile and protect the missile. The method of the invention is simple, high in reliability and good in protection effect.

Description

Translated fromChinese

一种基于反向喷气的导弹高速入水方法A high-speed water entry method for missiles based on reverse jet

一技术领域a technical field

本发明涉及一种基于反向喷气的导弹高速入水方法。高速导弹在入水时，导弹从空气运动到水中，是一个极其复杂的物理过程，这个过程中流体流动、水动力负荷、导弹加速度等都呈明显变化，这可能造成导弹的损坏，包括局部损坏、整体断裂和内部机构损坏。本发明是一种基于燃气发生器产生气体，通过拉瓦尔喷管加速进行反向喷气，覆盖弹体表面，对导弹进行保护的高速入水方法。The invention relates to a high-speed water entry method for missiles based on reverse air jet. When a high-speed missile enters the water, it is an extremely complicated physical process for the missile to move from the air to the water. During this process, the fluid flow, hydrodynamic load, and missile acceleration all change significantly, which may cause damage to the missile, including local damage, Integral fracture and internal mechanism damage. The invention is a high-speed water entry method based on gas generated by a gas generator, which is accelerated by a Laval nozzle to spray gas in reverse to cover the surface of a projectile and protect the missile.

二背景技术Two background technology

反潜导弹、鱼雷、深水炸弹、水雷等物体从空中穿过水面进入水中的过程是液体动力学中具有重要军事意义的研究课题，也是科研人员面临的一个重大问题。任何物体入水都经历撞水过程，由于空气和水的密度差很大，入水物体触水后，原来静止的水质点，突然得到一个有限的速度增量，与物面邻接的水介质受到压缩，形成的一个微弱的压缩波，以水中声速向各个方向传播，由此弱压缩波产生的水动压力对入水物体来说是非常大的。这种巨大的冲击力对导弹的损害是十分巨大的，一方面可能会使导弹的水动力外形遭到破坏，进入水中后，不能按正常设计工况运行；另一方面，这种冲击力会对发动机内部的控制系统、制导系统等造成破坏，使其不能正常工作。因此需要设计一种入水方法，来减小这种冲击力对导弹的损害。The process of objects such as anti-submarine missiles, torpedoes, depth charges, and mines entering the water from the air through the water surface is a research topic with important military significance in hydrodynamics, and it is also a major problem faced by researchers. Any object entering water will experience the process of hitting water. Due to the large density difference between air and water, after the object entering the water touches the water, the original static water particle will suddenly obtain a limited speed increase, and the water medium adjacent to the object surface will be compressed. A weak compression wave is formed, which propagates in all directions at the speed of sound in the water, and the hydrodynamic pressure generated by the weak compression wave is very large for the water-entering object. This kind of huge impact force will cause great damage to the missile. On the one hand, the hydrodynamic shape of the missile may be damaged, and after entering the water, it cannot operate according to the normal design conditions; Cause damage to the control system and guidance system inside the engine, making it unable to work normally. Therefore, it is necessary to design a method of entering water to reduce the damage of this impact force to the missile.

三发明内容Three invention content

本发明利用燃气发生器产生气体，气体通过长尾管进入拉瓦尔喷管进行加速，最后以超音速从喷管中喷出，覆盖在弹体表面，对入水的导弹进行保护。将燃气发生器放置在导弹内部，拉瓦尔喷管放置在导弹头部，燃气发生器与拉瓦尔喷管之间由长尾管相连接。导弹在入水前，对燃气发生器内的点火装置发出指令，点火装置点火，燃气发生器开始工作，产生的气体经过长尾管因摩擦作用进行加速，到达长尾管和拉瓦尔喷管交界面时仍为亚音速，进入拉瓦尔喷管继续加速到超音速从喷管出口流出，流出的气体覆盖在高速弹体表面。通过这一装置，即可完成对高速导弹的入水进行保护。The invention utilizes a gas generator to generate gas, the gas enters the Laval nozzle through the long tail pipe to be accelerated, and finally sprays out from the nozzle at supersonic speed, covers the surface of the projectile body, and protects the missile entering the water. The gas generator is placed inside the missile, the Laval nozzle is placed on the missile head, and the gas generator and the Laval nozzle are connected by a long tail pipe. Before the missile enters the water, it sends an instruction to the ignition device in the gas generator, the ignition device ignites, and the gas generator starts to work. The gas generated is accelerated by friction through the long tail pipe and reaches the interface between the long tail pipe and the Laval nozzle. When it enters the Laval nozzle, it continues to accelerate to supersonic speed and flows out from the outlet of the nozzle, and the gas flowing out covers the surface of the high-speed projectile. Through this device, the protection of high-speed missiles entering water can be completed.

本发明所采用的技术方案是：通过燃气发生器产生气体，气体经过长尾管和拉瓦尔喷管的加速，以超音速的速度从喷管出口喷出，覆盖在弹体表面上，防止高速导弹直接撞击到水面上，达到保护导弹的目的。The technical scheme adopted in the present invention is: the gas is generated by the gas generator, the gas is accelerated by the long tail pipe and the Laval nozzle, and is ejected from the outlet of the nozzle at a supersonic speed, covering the surface of the projectile to prevent high-speed The missile directly hits the water surface to achieve the purpose of protecting the missile.

本发明的有益效果是：利用燃气发生器作为气体的生成装置，能够可靠、有效地控制生成气体的流量、压力等；利用拉瓦尔喷管对燃气发生器产生的气体进行加速，最终达到超音速，可以防止外部环境对燃气发生器内部产生影响，保证燃气发生器按照设计情况正常工作；产生的燃气体覆盖在弹体表面，一方面可以在入水过程对导弹进行保护，另一方面可以减小弹导运行中水的阻力。The beneficial effects of the present invention are: using the gas generator as a gas generating device can reliably and effectively control the flow and pressure of the generated gas; using the Laval nozzle to accelerate the gas generated by the gas generator to finally reach supersonic speed , which can prevent the external environment from affecting the interior of the gas generator, and ensure that the gas generator works normally according to the design; the generated gas covers the surface of the projectile, which can protect the missile during the water entry process on the one hand, and reduce the The resistance of water in missile operation.

四附图说明Four drawings

附图是本基于反向喷气的导弹高速入水方法装置结构示意图。Accompanying drawing is the structure schematic diagram of the high-speed water entry method device of the missile based on the reverse jet.

图中标记说明：1-燃气发生器，2-长尾管，3-拉瓦尔喷管，4-导弹弹体Marking description in the figure: 1-gas generator, 2-long tail pipe, 3-Laval nozzle, 4-missile body

五具体实施方式Five specific implementation methods

结合附图对本发明做进一步说明：The present invention will be further described in conjunction with accompanying drawing:

如图所示，燃气发生器(1)放置在导弹弹体(4)内部，拉瓦尔喷管(3)放置在导弹弹体(4)头部，燃气发生器(1)与拉瓦尔喷管(3)之间由长尾管(2)相连接。导弹入水前，点火装置接到指令进行点火，燃气发生器(1)开始工作，气体经过长尾管(2)和拉瓦尔喷管(3)的加速，以超音速的速度从喷管出口喷出，覆盖在导弹弹体(4)表面，从而达到保护作用。As shown in the figure, the gas generator (1) is placed inside the missile body (4), the Laval nozzle (3) is placed on the head of the missile body (4), and the gas generator (1) and the Laval nozzle (3) are connected by long tail pipe (2) between. Before the missile enters the water, the ignition device receives an instruction to ignite, the gas generator (1) starts to work, the gas is accelerated by the long tail pipe (2) and the Laval nozzle (3), and is ejected from the outlet of the nozzle at a supersonic speed. out, covering the surface of the missile body (4), so as to achieve a protective effect.

Claims (4)

1. enter a water method at a high speed based on oppositely jet guided missile, it is characterized in that, comprising:

One gas generator, for generation of the gas covering body surface; One Laval nozzle, the gas for being produced by gas generator accelerates to supersonic speed ejection, covers body surface; One long-tail pipe, for connecting gas generator and Laval nozzle, can make gas generator be placed on guided missile inside, ensures that the change of guided missile position of centre of gravity is as far as possible little.

2. at a high speed enter water method according to according to claim 1 based on oppositely jet guided missile, it is characterized in that: gas generator has reliable igniter, when receiving firing command, can safety, reliably light a fire.

3. enter water method according to according to claim 1 at a high speed based on oppositely jet guided missile, it is characterized in that: Laval nozzle outlet has a blanking cover, when gas generator does not work, when preventing guided missile from running, extraneous gas enters wherein, during gas generator work, after setting up pressure, blanking cover can be blown off.

4. at a high speed enter water method according to according to claim 1 based on oppositely jet guided missile, it is characterized in that: long-tail pipe and gas generator and Laval nozzle compact siro spinning technology, the sealing of guarantee whole system.