CN111609758A - A Projectile Structure Controlling Detonation Stability in Ram Accelerators - Google Patents

Abstract

The invention discloses a projectile structure for controlling stable detonation of a stamping accelerator, wherein a wedge surface structure of a detonation wave of the projectile structure comprises a front edge wedge surface and a rear edge wedge surface, the angle of the rear edge wedge surface is adjustable, the rear edge wedge is connected with a spring or a reed, the expansion or deformation of the spring or the reed can change the angle of the rear edge wedge surface, and the larger the Mach number is, the smaller the angle of the rear edge wedge surface is. The angle of the trailing edge wedge surface is adjustable and is adaptively adjusted along with the change of the Mach number, and the larger the Mach number is, the smaller the angle of the trailing edge wedge surface is, so that the detonation is fixed at the optimal position, and the thrust maximization is realized.

Description

Translated fromChinese

一种控制冲压加速器内爆轰稳定的弹丸结构A Projectile Structure Controlling Detonation Stability in Ram Accelerators

技术领域technical field

本发明属于爆轰发动机技术领域，具体涉及一种控制冲压加速器内爆轰稳定的弹丸结构。The invention belongs to the technical field of detonation engines, in particular to a projectile structure for controlling detonation stability in a ram accelerator.

背景技术Background technique

冲压加速器能够将弹丸加速到几千米每秒甚至几十千米每秒的速度，这是传统火药燃烧推进弹丸无法达到的速度。但是冲压加速器有一个致命的弱点，就是不启动问题，传统的弹丸设计如图1所示，弹丸头部斜面是平直的，而且斜面角度一旦确定就固定了。因此能够使得低马赫数下爆轰稳定的斜面角对于高马赫数而言就会过于充分，也就是说，当弹丸加速到高马赫数时，其实只需要更小的角度。那么继续采用低马赫数下的角度就会产生额外的阻力和额外的总压损失，这对弹丸加速很不利，甚至可能会形成不启动现象。The ramjet can accelerate the projectile to a speed of several kilometers per second or even tens of kilometers per second, which is a speed that the traditional gunpowder combustion propellant projectile cannot achieve. However, the ram accelerator has a fatal weakness, that is, the problem of not starting. The traditional projectile design is shown in Figure 1. The slope of the projectile head is straight, and the slope angle is fixed once it is determined. Therefore, the slope angle that can stabilize the detonation at low Mach numbers is too sufficient for high Mach numbers, that is, when the projectile accelerates to high Mach numbers, only a smaller angle is actually needed. Continuing to use the angle at a low Mach number will generate additional resistance and additional total pressure loss, which is very detrimental to projectile acceleration, and may even result in a non-start phenomenon.

发明内容SUMMARY OF THE INVENTION

本发明的目的在于提供一种控制冲压加速器内爆轰稳定的弹丸结构，控制爆轰波在不同马赫数下都驻定在最优的位置，从而使得推力性能最优化。The purpose of the present invention is to provide a projectile structure that controls the detonation stability in the ram accelerator, and controls the detonation wave to settle at the optimal position under different Mach numbers, thereby optimizing the thrust performance.

为了实现上述目的，本发明采用的技术方案如下：In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

一种控制冲压加速器内爆轰稳定的弹丸结构，所述弹丸结构的爆轰波的楔面结构包括前缘斜楔面和后缘斜楔面，所述后缘斜楔面的角度可调。A projectile structure for controlling detonation stability in a ram accelerator, the wedge surface structure of the detonation wave of the projectile structure includes a leading edge wedge surface and a trailing edge wedge surface, and the angle of the trailing edge wedge surface is adjustable.

进一步地，所述后缘斜楔面包括一后缘斜楔，所述后缘斜楔与一弹簧连接，所述弹簧的伸缩能够改变后缘斜楔面的角度，马赫数越大，所述后缘斜楔面的角度越小。Further, the trailing edge wedge surface includes a trailing edge wedge, the trailing edge wedge is connected with a spring, and the expansion and contraction of the spring can change the angle of the trailing edge wedge surface, the greater the Mach number, the greater the The smaller the angle of the trailing edge bevel.

进一步地，所述后缘斜楔面包括一后缘斜楔，所述后缘斜楔与一簧片连接，所述簧片的变形能够改变后缘斜楔面的角度，马赫数越大，所述后缘斜楔面的角度越小。Further, the trailing edge wedge surface includes a trailing edge wedge, the trailing edge wedge is connected with a reed, the deformation of the reed can change the angle of the trailing edge wedge surface, the greater the Mach number, the The smaller the angle of the trailing edge bevel surface is.

本发明与现有技术相比，其显著优点在于：Compared with the prior art, the present invention has the following significant advantages:

本发明后缘斜楔面的角度可调，随马赫数变化自适应调整，马赫数越大，所述后缘斜楔面的角度越小，从而将爆轰驻定在最佳位置，实现推力最大化。The angle of the inclined wedge surface of the trailing edge of the invention can be adjusted, and it can be adjusted adaptively with the change of Mach number. maximize.

附图说明Description of drawings

图1是传统弹丸的结构示意图。Figure 1 is a schematic diagram of the structure of a conventional projectile.

图2是本发明弹丸的结构示意图。Figure 2 is a schematic structural diagram of the projectile of the present invention.

图3是通过弹簧控制后缘斜楔运动的示意图。Figure 3 is a schematic diagram of the movement of the trailing edge wedge controlled by a spring.

图4是通过簧片控制后缘斜楔运动的示意图。Fig. 4 is a schematic diagram of controlling the movement of the trailing edge wedge by the reed.

具体实施方式Detailed ways

为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

以下结合具体实施例对本发明的实现进行详细的描述。The implementation of the present invention will be described in detail below with reference to specific embodiments.

结合图2，一种控制冲压加速器内爆轰稳定的弹丸结构，所述弹丸结构的爆轰波的楔面结构包括前缘斜楔面和后缘斜楔面，所述后缘斜楔面的角度θ₂可调，前缘斜楔面的角度θ₁固定。With reference to Fig. 2, a projectile structure for controlling detonation stability in a ram accelerator, the wedge surface structure of the detonation wave of the projectile structure includes a leading edge wedge surface and a trailing edge wedge surface, and the trailing edge wedge surface is The angle θ₂ is adjustable, and the angle θ₁ of the leading edge wedge surface is fixed.

进一步地，结合图3，所述后缘斜楔面包括一后缘斜楔，所述后缘斜楔与一弹簧连接，所述弹簧的伸缩能够改变后缘斜楔面的角度，马赫数越大，所述后缘斜楔面的角度越小。后缘斜楔的运动规律由弹簧控制，其位置由不同马赫数下的来流阻力和弹簧的阻力平衡来确定，弹簧的设计需求根据实际弹丸加速过程中斜楔的受力和爆轰驻定最佳后缘斜楔角共同确定，后缘斜楔的长度由实际推力需求，燃料类型等特性共同确定。Further, referring to FIG. 3 , the trailing edge wedge surface includes a trailing edge wedge, the trailing edge wedge is connected with a spring, and the expansion and contraction of the spring can change the angle of the trailing edge wedge surface, and the higher the Mach number, the higher the angle of the trailing edge wedge surface. The larger the angle, the smaller the angle of the trailing edge bevel. The movement law of the trailing edge wedge is controlled by the spring, and its position is determined by the inflow resistance at different Mach numbers and the resistance balance of the spring. The design requirements of the spring are based on the force of the wedge and the detonation stationing during the actual projectile acceleration process. The optimal trailing edge wedge angle is jointly determined, and the length of the trailing edge wedge is jointly determined by the actual thrust demand, fuel type and other characteristics.

进一步地，结合图4，所述后缘斜楔面包括一后缘斜楔，所述后缘斜楔与一簧片连接，所述簧片的变形能够改变后缘斜楔面的角度，马赫数越大，所述后缘斜楔面的角度越小。后缘斜楔的运动规律由簧片控制，其位置由不同马赫数下的来流阻力和簧片的弹性力来确定。Further, referring to FIG. 4 , the trailing edge wedge surface includes a trailing edge wedge, the trailing edge wedge is connected with a reed, and the deformation of the reed can change the angle of the trailing edge wedge surface, Mach. The larger the number, the smaller the angle of the trailing edge bevel. The movement law of the trailing edge wedge is controlled by the reed, and its position is determined by the flow resistance at different Mach numbers and the elastic force of the reed.

本发明将传统的斜面一分为二，其由前缘斜楔和后缘斜楔组成，后缘斜楔在不同的马赫数下受力不同，马赫数越大其角度越小，这正好符合爆轰稳定的需求，通过其在加速过程中的自适应控制实现爆轰在宽马赫数范围下始终稳定在最佳位置。The invention divides the traditional inclined plane into two parts, which is composed of a leading edge wedge and a trailing edge wedge. The trailing edge wedge is subjected to different forces under different Mach numbers. The larger the Mach number, the smaller the angle, which is exactly in line with the Detonation stabilization needs, through its adaptive control during acceleration, the detonation is always stabilized in the optimal position in a wide range of Mach numbers.

以上显示和描述了本发明的基本原理、主要特征及优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

Translated fromChinese

1.一种控制冲压加速器内爆轰稳定的弹丸结构，其特征在于，所述弹丸结构的爆轰波的楔面结构包括前缘斜楔面和后缘斜楔面，所述后缘斜楔面的角度可调。1. a projectile structure that controls detonation stability in the ram accelerator, it is characterized in that, the wedge surface structure of the detonation wave of described projectile structure comprises leading edge wedge surface and trailing edge wedge surface, and described trailing edge wedge surface. The angle of the face is adjustable.2.根据权利要求1所述的控制冲压加速器内爆轰稳定的弹丸结构，其特征在于，所述后缘斜楔面包括一后缘斜楔，所述后缘斜楔与一弹簧连接，所述弹簧的伸缩能够改变后缘斜楔面的角度，马赫数越大，所述后缘斜楔面的角度越小。2. The projectile structure for controlling detonation stability in a ram accelerator according to claim 1, wherein the trailing edge wedge surface comprises a trailing edge wedge, and the trailing edge wedge is connected with a spring, so The expansion and contraction of the spring can change the angle of the trailing edge wedge surface, and the larger the Mach number, the smaller the angle of the trailing edge wedge surface.3.根据权利要求1所述的控制冲压加速器内爆轰稳定的弹丸结构，其特征在于，所述后缘斜楔面包括一后缘斜楔，所述后缘斜楔与一簧片连接，所述簧片的变形能够改变后缘斜楔面的角度，马赫数越大，所述后缘斜楔面的角度越小。3. The projectile structure for controlling detonation stability in a ram accelerator according to claim 1, wherein the trailing edge wedge surface comprises a trailing edge wedge, and the trailing edge wedge is connected with a reed, The deformation of the reed can change the angle of the trailing edge wedge surface, and the larger the Mach number, the smaller the angle of the trailing edge wedge surface.

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