Device for preventing gas entrapment in core inserting and propellant casting processes of solid rocket engine

A technology of solid rockets and engines, which is applied in the direction of rocket motor devices, jet propulsion devices, machines/engines, etc., can solve the problems that the ferrule cannot guarantee uniform quality, complex supporting equipment, and cannot effectively prevent air inclusions, etc., to achieve improved Ferrule efficiency, guaranteed ferrule quality, and easy installation and disassembly

Pending Publication Date: 2018-04-27
INNER MONGOLIA UNIV OF TECH
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  • Summary
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Problems solved by technology

In order to solve this problem, some researchers have considered solutions such as the vacuum ferrule process, but it is necessary to carry out more complex process improvement design and manufacture more complex supporting equipment
In actual production, a certain company’s solution to the air tr

Method used

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  • Device for preventing gas entrapment in core inserting and propellant casting processes of solid rocket engine
  • Device for preventing gas entrapment in core inserting and propellant casting processes of solid rocket engine
  • Device for preventing gas entrapment in core inserting and propellant casting processes of solid rocket engine

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] Refer to attached Figure 1-5 , The main structure of the solid rocket motor core casting press plate and material receiving device of the present invention includes: airfoil press plate 1, material receiving tray 2, and steering arm assembly 3.

[0020] The airfoil pressure plate 1 is fixed at the pouring port 5 of the engine to replace the function of manual pressing; the material receiving tray 2 is installed on the outside of the airfoil pressure plate 1 to cooperate with the pressure plate with a small gap, and is fixedly connected with the nut 4 to hold the overflowing propulsion agent; the steering arm assembly is 180 ° phase vertical and evenly distributed on the outer surface of the welded tray 2, and its function is to hold the pressing plate and the receiving device against the engine sprue at 5 places.

[0021] Further, the airfoil pressur...

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Abstract

A solid rocket motor core casting anti-propellant entrainment device comprises an airfoil pressure plate (1), a material receiving tray (2), and a steering arm assembly (3). Before inserting the core, the steering arm assembly (3) welded on the material receiving tray (2) is assembled, and then the airfoil pressure plate (1) and the material receiving tray (2) are assembled and fixedly connected to complete the preparatory work. After pouring the propellant inside the engine case in a vacuum environment, the invention is installed on the engine pouring port (5) by rotating the knurled fastening bolt (34) and the stop block (36). When inserting the core, the core mold (6) enters the engine casing at a constant speed, and the propellant extruded by the core mold flows into the receiving tray ( 2) in the annular groove until the ferrule is completed within the specified time. After inserting the core, unclamp the knurled set bolt (34), take off the present invention, clean up and reset.

Description

technical field [0001] The invention belongs to the field of small-sized solid rocket motor grain pouring molding technology, and in particular relates to a device for preventing propellant entrainment by casting cores of solid rocket motors. Background technique [0002] The ferrule casting of solid rocket motor is also called pouring first and then ferrule, which refers to the method of pouring the propellant slurry into the combustion chamber of the engine, and then inserting the core into the combustion chamber of the engine. For a small engine with a relatively simple structure, when the maximum diameter of the mandrel is similar to the pouring diameter of the engine, and it is difficult to carry out vacuum casting with the mandrel, the core casting method is an effective grain casting method. [0003] In the actual production process of a small solid rocket motor, the charge production is completed by the production process of core casting, but sometimes there are pore...

Claims

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Application Information

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IPC IPC(8): F02K9/08F42B33/02
CPCF02K9/08F42B33/0207F42B33/0214
Inventor 崔昭霞杨涛车航王稳稳刘江郭建忠芮振洋李建军杨三月张志军
Owner INNER MONGOLIA UNIV OF TECH
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