阅读说明：本技术 一种固体火箭发动机热球窝接头结构设计 (A kind of solid propellant rocket hot-bulb socket and spigot joint header structure design ) 是由 刘文芝 陈野 于 2019-05-15 设计创作，主要内容包括：本发明公开了一种固体火箭发动机热球窝接头的设计方案,属于航天器推进系统技术领域,一种固体火箭发动机热球窝接头包括阳球和阴球,阳球通过外球面和阴球内球面形成球带配合,从而构成了可自由摆动的喷管接头,该球窝结构可增强系统稳定性,从而使摆心漂移量减小,另外,由于阳球和阴球均使用性能优越的三维碳/碳编织复合材料,使热球窝接头喷管相对于之前的喷管具有部件少、重量轻、密封性好、作动力矩小、系统稳定性好、可靠性更高的优点,从而在整体上提高了发动机的性能,促进了航天事业的进步。(The invention discloses a kind of design schemes of solid propellant rocket hot-bulb and-socket joint, belong to spacecraft propulsion system technical field, a kind of solid propellant rocket hot-bulb and-socket joint includes positive ball and negative ball, positive ball forms spherical zone cooperation by spherical outside surface and negative ball Internal Spherical Surface, to constitute swingable spray nozzle, the socket arrangement can enhance system stability, to make center of oscillation drift value reduce, in addition, due to positive ball and the superior three-dimensional carbon of the negative equal service performance of ball/carbon woven composite, hot-bulb and-socket joint jet pipe is set to have component few relative to jet pipe before, it is light-weight, good airproof performance, it is small to make kinetic moment, system stability is good, the higher advantage of reliability, to improve the performance of engine on the whole, promote the progress of aerospace industry.)

1. a kind of solid propellant rocket hot-bulb socket and spigot joint header structure includes positive ball and negative ball, it is characterised in that: the sun ball ectosphere Face is the bulb of large scale spherical surface, and positive ball inner mold face is first to restrain the Laval inner mold face expanded afterwards, and lower part is to be used for and spray The flange of pipe connection；The yin ball is ball-and-socket, and negative ball Internal Spherical Surface and spherical outside surface are large scale spherical surface.

2. a kind of solid propellant rocket hot-bulb and-socket joint according to claim 1, it is characterised in that the sun ball and yin Ball is made of three-dimensional carbon/carbon woven composite.

3. a kind of solid propellant rocket hot-bulb and-socket joint according to claim 1, it is characterised in that the sun ball ectosphere Radius surface and negative ball inner sphere radius are 115.25mm.

4. a kind of solid propellant rocket hot-bulb and-socket joint according to claim 1, it is characterised in that the sun ball inner mold Face is made of converging portion, throat, divergent section.

5. a kind of solid propellant rocket hot-bulb and-socket joint according to claim 4, it is characterised in that the sun ball convergence Section inlet radius is 100mm.

6. a kind of solid propellant rocket hot-bulb and-socket joint according to claim 4, it is characterised in that the sun ball inner mold Face throat radius is 70mm.

7. a kind of solid propellant rocket hot-bulb and-socket joint according to claim 1, it is characterised in that the yin ball ectosphere Radius surface is 125.25mm.

8. a kind of solid propellant rocket hot-bulb and-socket joint according to claim 1, it is characterised in that ball in the yin ball Axial angle (contact angle) is 73.425 ° at the center of face and in the line of the centre of sphere and positive ball.

9. a kind of solid propellant rocket hot-bulb and-socket joint according to claim 1, it is characterised in that ball in the yin ball The line angle (contact range) of end face and the centre of sphere is 10.513 ° at the center of face and on the line and spherical surface of the centre of sphere (under or).

Technical field

The present invention relates to spacecraft propulsion system technical field, specifically a kind of solid propellant rocket hot-bulb and-socket joint knot The design of structure.

Background technique

Solid propellant rocket is the major impetus device of current various spacecrafts and various conventional tactical missiles.Jet pipe is The core component of rocket engine, function, which is engine, to be provided controllable flight for spacecraft by changing combustion gas emission direction and pushes away Power, and guarantee stability of the aircraft under any state and environment, by regulation ballistic flight or make necessary maneuvering flight, institute With performance often decides the overall performance of spacecraft.

In the development course of decades, successively there is jet vane, jet flow deflector, swivelling-nozzle, liquid bearing spray The spray bar technologies such as pipe, flexible joint nozzle and cold ball-socked nozzle, it is also general although these jet pipes have certain superiority in performance Store-through is structure is complicated, weight is big, center of oscillation drift value is big, makees the disadvantages such as kinetic moment is big and reliability is low.

So in view of the above problems, needing to design that a kind of structure is simple, light-weight, stability is good, it is small to make kinetic moment and can A kind of spray nozzle structure high by property improves the overall performance of spacecraft.

Summary of the invention

To solve the above-mentioned problems, the present invention provides a kind of designs of novel solid propellant rocket hot-bulb and-socket joint Scheme, realize simplify the structure, weight lightness, movenent performance are superior and the demand of high reliablity.

The purpose of the present invention is achieved through the following technical solutions: this solid propellant rocket hot-bulb socket and spigot joint header structure includes Positive ball and negative ball, it is characterised in that: the sun ball spherical outside surface is the bulb of large scale spherical surface, and positive ball inner mold face is first to restrain to expand afterwards The Laval inner mold face opened, lower part are the flange for connecting with jet pipe；The yin ball is ball-and-socket, negative ball Internal Spherical Surface and ectosphere Face is large scale spherical surface.

Wherein, the positive ball and negative ball are made of three-dimensional carbon/carbon woven composite.

Wherein, the positive ball ectosphere radius surface and negative ball inner sphere radius are 115.25mm.

Wherein, the positive ball inner mold face is made of converging portion, throat, divergent section.

Wherein, the positive ball converging portion inlet radius is 100mm.

Wherein, the positive ball throat radius is 70mm.

Wherein, the negative ball ectosphere radius surface is 125.25mm.

Wherein, at the negative ball Internal Spherical Surface center and the line of the centre of sphere with axial angle (contact angle) in sun ball is 73.425°。

Wherein, at the negative ball Internal Spherical Surface center and on the line and spherical surface of the centre of sphere (under or) end face and the centre of sphere binding clip Angle (contact range) is 10.513 °.

Compared with prior art, beneficial effects of the present invention are as follows:

Hot-bulb and-socket joint all uses three-dimensional carbon/carbon woven composite, and this material is compared to metal material before Connector includes the advantages that thermal expansion coefficient is low, thermal coefficient is high, density is low, coefficient of friction is low and stable performance under high temperature, from Without sealing device, lining material and heat insulation layer is separately configured, thus jet pipe is made to reduce number of components on the whole, subtracted Light system weight, reduces and makees kinetic moment, to improve reliability.

The joint structure of yin and yang sphere cooperation keeps jet pipe oscillation center relatively stable, to reduce center of oscillation drift value, improves The stability of system.

Detailed description of the invention

Fig. 1 is hot-bulb and-socket joint schematic diagram of the invention；

Fig. 2 is positive ball schematic diagram of the invention；

Fig. 3 is negative ball schematic diagram of the invention；

In figure: 1- sun ball, 101- sun ball spherical outside surface, 102- sun ball inner mold face, end flanges under 103- sun ball, 2- yin ball, 201- yin ball Internal Spherical Surface, 202- yin ball spherical outside surface.203- yin ball upper surface, 204- yin ball lower end surface.

Specific embodiment

Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.Following embodiment will be helpful to Those skilled in the art further understands the present invention, but the invention is not limited in any way.It should be pointed out that ability For the those of ordinary skill in domain, without departing from the inventive concept of the premise, a series of improvement can also be made.These all belong to In protection scope of the present invention.

A kind of solid propellant rocket hot-bulb socket and spigot joint header structure includes positive ball 1 and negative ball 2, it is characterised in that: the sun ball Spherical outside surface 101 is the bulb of large scale spherical surface, and positive ball inner mold face 102 is first to restrain the Laval inner mold face expanded afterwards, lower part For the flange 103 for being connected with jet pipe；The yin ball 2 is ball-and-socket, and negative ball Internal Spherical Surface 201 and spherical outside surface 202 are large scale Spherical surface.

The sun ball 1 and negative ball 2 are made of three-dimensional carbon/carbon woven composite.

101 radius of sun ball spherical outside surface and negative 201 radius of ball Internal Spherical Surface are 115.25mm.

The sun ball inner mold face 102 is made of converging portion, throat, divergent section.

The sun ball converging portion inlet radius is 100mm.

102 throat radius of sun ball inner mold face is 70mm.

The yin ball ectosphere radius surface is 125.25mm.

Axial angle (contact angle) is 73.425 ° at the yin ball Internal Spherical Surface center and in the line and positive ball of the centre of sphere.

The line angle of end face and the centre of sphere (connects at the yin ball Internal Spherical Surface center and on the line and spherical surface of the centre of sphere (under or) Touch range) it is 10.513 °.

When work, under the action of jet pipe wall pressure and unsteady thermal stress, positive ball 1 and negative ball 2 generate a certain amount of Deformation, so that positive ball spherical outside surface 101 and negative ball Internal Spherical Surface 201 is generated certain extruding, to be formed to in-engine combustion gas Sealing effect, for system under the drive of actuator, positive ball 1 carries out pendulum motion in negative ball Internal Spherical Surface 201, to realize to combustion The control of gas emission direction.

Specific embodiments of the present invention are described above, it is to be understood that the invention is not limited to above-mentioned Particular implementation, those skilled in the art can make various improvement within the scope of the claims, this has no effect on this hair Bright substantive content.