A method for forming the charge combustion chamber of a double-pulse solid motor
A solid motor and molding method technology, applied in rocket motor devices, machines/engines, mechanical equipment, etc., can solve the problems of propellant grain damage and difficult to guarantee the coaxiality of the engine, and achieve the problem of increasing rigidity and solving insufficient rigidity. Effect
Active Publication Date: 2020-02-11
THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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Problems solved by technology
[0004] In view of the defects existing in the prior art, the object of the present invention is to provide a method for forming the charge combustion chamber of a double-pulse solid motor, which solves the problems of propellant grain damage caused by insufficient stiffness of the winding spindle and difficulty in ensuring the coaxiality of the motor. question
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[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0039] see Figure 2-6 As shown, the embodiment of the present invention provides a method for forming a double-pulse solid motor charge combustion chamber, comprising the following steps:
[0040] Pouring molding propellant grain 1;
[0041] Propellant grain 1, soft interlayer 2, nozzle 3 and front joint 4 are assembled into initial combustion chamber 5;
[0042] Assembling the winding shaft 60 of the winding forming device 6 onto the initial combustion chamber 5 to form a winding mandrel 7;
[0043] The winding forming device 6 is preset with a forming space, and the winding mandrel 7 is vertically installed in the forming space, so that the gravitational action line of the initial combustion chamber 5 is coaxially arranged with the winding shaft 60, and the winding mandrel 7 is wound and formed to obtain Charge combustion chamber 8.
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The invention discloses a forming method of a double-pulse solid engine charge combustion chamber. Firstly, a propellant grain is molded by casting; then, the propellant grain, a soft interlayer, a spraying pipe and a front connector are assembled to form an initial combustion chamber; next, a winding shaft of a winding forming device is assembled on the initial combustion chamber to form a winding core mold, a forming space is pre-formed in the winding forming device, the winding core mold is vertically installed in the forming space, the winding shaft is vertically put, and the winding coremold is wound and formed to form the charge combustion chamber. When the vertical winding forming is carried out, a gravity action line of the initial combustion chamber and a center line of the winding shaft are coaxial, and the problem that as the rigidity of the winding shaft is not enough, the propellant grain is damaged and the coaxiality of an engine is difficulty to guarantee are solved.
Description
technical field [0001] The invention relates to the technical field of solid rocket motor manufacturing, in particular to a method for forming a charge combustion chamber of a double-pulse solid motor. Background technique [0002] The traditional dual-pulse engine charge combustion chamber needs to be pre-wound to form the combustion chamber shell, and then pour the propellant grain. The combustion chamber shell winding molding device is as follows: figure 1 shown. The combustion chamber shell is usually formed by horizontal winding method. When winding, a light sand core 3' is used as a supporting mandrel, a chuck 4' is used to fix the winding main shaft 1' and the sand core, and the winding main shaft is fixed through the sleeve 2'. The torque of 1' is transmitted to the sand core 3' for rotation, so that the fiber can be wound around the combustion chamber shell. After the combustion chamber casing is solidified and demoulded, the propellant grains are poured to form t...
Claims
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IPC IPC(8): F02K9/34F02K9/24B29C53/56
CPCB29C53/56B29L2031/749F02K9/24F02K9/34
Inventor 赵飞杨渊高列义方锡惠于泉许玉荣高阿婷张棚周睿余明敏
Owner THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD