CN112282970B

CN112282970B - Rotary rail-controlled solid engine

Info

Publication number: CN112282970B
Application number: CN202011158274.5A
Authority: CN
Inventors: 季朦; 王东魏; 罗杨; 高辉
Original assignee: Beijing Machinery Equipment Research Institute
Current assignee: Beijing Machinery Equipment Research Institute
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-08-24
Anticipated expiration: 2040-10-26
Also published as: CN112282970A

Abstract

The invention discloses a rotary rail-controlled solid engine, which comprises: an open housing; the rotating motor is fixed on the inner wall of the shell, and the supporting component is positioned below the rotating motor and fixed on the inner wall of the open shell; the rotary spray pipe assembly comprises a plurality of rotary spray pipes which are distributed circumferentially, each spray pipe is connected through a multi-spray pipe adapter part, and the opening and closing of a flow passage of each spray pipe are controlled by a switching electromagnetic valve; the combustion chamber is fixed in the open shell and does not rotate, is positioned below the supporting component and is connected with the multi-nozzle adapter component through the movable sealing component, and solid propellant is arranged inside the combustion chamber; the driving shaft of the rotating motor is coaxial with the opening shell and is directly connected with and drives the spray pipe of the rotating spray pipe assembly to rotate. The invention adopts the motor to directly drive the rotating spray pipe assembly to realize thrust vector adjustment, and combines the electromagnetic valve to quickly control the opening and closing of the single spray pipe and the rotation of the spray pipe, thereby achieving the purpose of synthesizing the rail-controlled thrust vector along the arbitrary direction of 360 degrees in the circumferential direction and improving the reliability of the control of the rail-controlled thrust vector.

Description

Rotary rail-controlled solid engine

Technical Field

The invention belongs to the technical field of solid rocket engines, and particularly relates to a rotary rail-controlled solid engine.

Background

The solid rocket engine has the advantages of simple structure, good maneuverability, high propellant density, capability of storing the propellant in a combustion chamber for standby use, convenience and reliability in operation and the like, and is commonly used for rail control systems such as guided missiles, kinetic energy interceptors and the like. The rail-controlled solid engine is generally provided with a plurality of engines or spray pipes in a plane located in the center of mass of the projectile body, and the engines or spray pipes are adjusted to generate thrust composite vector thrust in different directions and different magnitudes. The thrust vector control mode of the rail-controlled engine mainly aims at two modes of variable gas flow rate and pulse width modulation variable thrust of a single engine or a jet pipe, and the two modes generally adopt moving parts such as a plunger or a valve and the like to adjust the thrust of the single jet pipe and synthesize the vector thrust by the jet pipes with different thrusts. Due to the serious ablation phenomenon, the structure of the movable part can be changed, and the thrust of the spray pipe and the vector thrust direction of the rail-controlled engine are directly influenced.

Disclosure of Invention

The invention aims to provide a rotary rail-controlled solid engine, which realizes thrust vector adjustment by directly driving a spray pipe to rotate through a motor, avoids the ablation problem of movable parts of the traditional rail-controlled engine and improves the response speed and accuracy of synthetic rail-controlled vector thrust.

To achieve the above object, according to one aspect of the present invention, there is provided a rotary rail controlled solid engine comprising: an open housing; the rotating motor is fixed on the inner wall of the shell; the supporting component is positioned below the rotating motor and fixedly connected to the inner wall of the opening shell; the rotary spray pipe assembly is fixed on the supporting part and comprises a plurality of rotary spray pipes which are distributed circumferentially, each rotary spray pipe is connected through a multi-spray pipe adapter part, and the opening and closing of a flow passage of each spray pipe are controlled by a switching electromagnetic valve; the combustion chamber is fixed in the open shell and does not rotate, is positioned below the supporting component and is connected with the multi-nozzle adapter component through a dynamic sealing component, and a solid propellant is arranged in the combustion chamber; and the driving shaft of the rotating motor is coaxial with the opening shell and is directly connected with and drives the spray pipe of the rotary spray pipe assembly to rotate.

Preferably, the support member is composed of a pair of hollow structural members, and the rotary nozzle is supported by a bearing installed at a hollow position between the pair of hollow structural members.

Preferably, the rotating nozzle assembly comprises 6 rotating nozzles uniformly distributed on the circumference, and the included angle between every two adjacent rotating nozzles is 60 degrees.

Preferably, the rotating electric machine is a high-torque brushless direct current motor.

The invention has the beneficial effects that:

the rotary rail-controlled solid engine provided by the invention realizes thrust vector adjustment by directly driving the rotary spray pipe assembly by the motor, and combines the electromagnetic valve to rapidly control the opening and closing of the single spray pipe and the rotation of the spray pipe, so that the aim of synthesizing the rail-controlled thrust vector along any direction of 360 degrees in the circumferential direction is fulfilled, the ablation problem of a thrust adjusting movable part in the traditional rail-controlled thrust vector synthesis scheme is avoided, and the control reliability of the rail-controlled thrust vector is improved. Meanwhile, based on small inertia and small-angle rotation, the accuracy and response speed of the synthesis of the rail control thrust vector can be effectively improved.

Drawings

FIG. 1 is a front view of an orbital solid engine of the invention.

FIG. 2 is a schematic view of the arrangement structure of 6 rotary nozzles of the rail-controlled solid engine of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be emphasized that the specific embodiments described herein are merely illustrative of the invention, are some, not all, and therefore do not limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, the rotary rail controlled solid engine includes an open casing 7, a rotary electric machine 1, a support member 2, a rotary nozzle assembly, and the like. Wherein, rotating electrical machines 1 is fixed in on the opening casing 7 inner wall, and supporting component 2 also fixed connection is on opening casing 7 inner wall and be located rotating electrical machines 1 below. The support member 2 is composed of a pair of hollow structural members, and supports the rotary nozzle 3 through a bearing installed at a hollow position between the pair of hollow structural members. The rotary nozzle assembly is fixed to the support member 2 intermediate a pair of hollow structural members. The rotary spray pipe assembly comprises a plurality of rotary spray pipes 3 distributed circumferentially, each rotary spray pipe 3 is connected through a multi-spray-pipe adapter part 4, and the opening and closing of a flow passage of each rotary spray pipe 3 are controlled by a switching electromagnetic valve. A combustion chamber 6 is also fixed in the open housing 7 and is not rotatable, is located below the support member 2 and is connected to the multi-nozzle adapter member 4 by means of a dynamic seal member 5, and the combustion chamber 6 is internally provided with a solid propellant. The rotating motor 1 is a large-torque brushless direct current motor, and a driving shaft of the rotating motor is coaxial with the opening shell 7 and is directly connected with the opening shell and drives the rotating nozzle 3 of the rotating nozzle component to rotate.

In a preferred embodiment of the present invention, the rotating nozzle assembly comprises 6 rotating nozzles 3 uniformly distributed circumferentially, and the angle between adjacent rotating nozzles 3 is 60 °.

In the orbital control application, the rotating nozzle assembly is placed in the plane of the aircraft center of mass, and the opening and closing of the single rotating nozzle 3 are controlled by the switching valve, as shown in fig. 2.

The basic working flow of the invention is as follows: firstly, determining the direction of the rail-controlled thrust, then driving the rotary spray pipe assembly to rotate at a small angle by the motor, and synchronously igniting the engine and opening a corresponding spray pipe flow passage. As shown in fig. 2, when 6 rotary nozzles are uniformly distributed in the circumferential direction, the two modes of single-nozzle and double-nozzle operation can be adopted, for example, ignition of a single rotary nozzle is controlled, the switching electromagnetic valves corresponding to the rotary nozzles are turned on, thrust is output or two adjacent rotary nozzles are controlled to be simultaneously ignited, and the two switching electromagnetic valves corresponding to the two rotary nozzles are turned on, and thrust is output. When circumference evenly distributed had 6 rotatory spray pipes, according to single spray pipe and two kinds of modes of two spray pipe work, can confirm 6+6 as 12 thrust output directions, the contained angle is 30 between two adjacent thrust vectors. The nozzle assembly rotates by 15 degrees to the maximum positive and negative by matching with the rotation control of a motor with small inertia, so that the thrust vector can reach 360-degree any direction in the circumferential direction. Because the switch valve is only opened and closed by control, the switch valve is simple and reliable, the inertia of the motor-driven rotating assembly is small, the rotating angle is small, and the accuracy and the response speed of the synthesis of the rail-controlled thrust vector can be greatly improved.

The invention can realize 12 thrust directions along the circumferential direction by combining 2 working modes of opening the single/double spray pipes through 6 standard spray pipes which are uniformly arranged, directly drives the rotary spray pipe assembly by using the rotary motor, realizes thrust vectors in any directions of 360 degrees along the circumferential direction by combining the rotary spray pipe assembly and the single/double spray pipe opening mode, and has no limit on the number of the spray pipes.

The foregoing is only a preferred application of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the technical principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. A rotary rail controlled solid engine, comprising:

an open casing (7);

a rotating electrical machine (1) fixed to the inner wall of the open casing (7);

the supporting component (2) is positioned below the rotating motor (1) and is fixedly connected to the inner wall of the opening shell (7);

the rotary spray pipe assembly is fixed on the supporting part (2) and comprises a plurality of rotary spray pipes (3) which are distributed circumferentially, each rotary spray pipe (3) is connected through a multi-spray pipe switching part (4), and the opening and closing of a flow passage of each single spray pipe are controlled by a switching electromagnetic valve;

the combustion chamber (6) is fixed in the open shell (7) and does not rotate, is positioned below the supporting component (2) and is connected with the multi-nozzle adapter component (4) through a dynamic sealing component (5), and solid propellant is arranged in the combustion chamber (6);

the driving shaft of the rotating motor (1) is coaxial with the opening shell (7) and is directly connected with and drives the spray pipe of the rotary spray pipe assembly to rotate.

2. A rotary orbital solid engine according to claim 1, characterized in that the support member (2) consists of a pair of hollow structural elements, the rotary nozzle (3) being supported by bearings mounted in hollow position between the pair of hollow structural elements.

3. A rotary rail solids engine according to claim 1 wherein the rotary jet assembly comprises 6 rotary jets (3) evenly distributed circumferentially, the angle between adjacent rotary jets (3) being 60 °.

4. A rotary orbital solid engine as claimed in claim 1, characterized in that each of said rotary nozzles (3) is a laval nozzle with uniform characteristic parameters.