Fuel preparation mold for solid fuel ramjet

Abstract

The invention discloses a fuel preparation mold for a solid fuel ramjet. The fuel preparation mold comprises a base, a hollow heating pipe, a cylinder body, a top clamping ring and a compression block; the cylinder body comprises two semi-cylindrical sections, and the two semi-cylindrical sections are connected through a clamping groove in a clearance fit mode; the base is connected to the hollowheating pipe through a stepped hole in an interference fit mode; the outer side surface of the lower end of the cylinder body is matched with the stepped inner circle of the base in an interference fit mode; the outer side surface of the top of the cylinder body is connected to the top clamping ring through the stepped hole in an interference fit mode; an inner hole of the compression block is matched with the outer side surface of the hollow heating pipe in a clearance fit mode; and the outer side surface of the compression block is connected to the inner side surface of the cylinder body ina clearance fit mode. The mold has the advantages that the design of the hollow heating pipe is adopted, so that internal and external heating balance of powdery solid fuel can be guaranteed to the maximum extent, and raw materials are saved; only the top clamping ring needs to be detached, so that cylinder body of the mold can be opened, and demolding can be realized; and the problem that demolding is difficult when the solid fuel prepared from different components is prepared can be solved, and the solid fuel with relatively good compactness for the test of the ramjet can be prepared quicklyat a low cost.

Description

technical field [0001] The invention relates to the technical field of fuel preparation for a solid fuel ramjet engine test, in particular to a solid fuel preparation mold for a solid fuel ramjet engine. Background technique [0002] Most of the existing molds for preparing solid fuel are aimed at solid rocket motors, such as the patent "Solid propellant pressurized solidification test sample mold tooling" (CN201510550741.1), the patent "A vacuum for the production of composite solid propellant test pieces" Casting Mold" (CN201521065435.0) and patented "A Composite Solid Propellant Pouring and Sealing Device" (CN201620062704.6), its structure is complex, the operation is cumbersome, and it is not easy to remove the mold. The solid-fuel ramjet uses an oxygen-poor propellant, which is different from the oxygen-rich propellant used in a solid rocket motor. The oxygen-poor propellant directly uses oxygen in the air as an oxidant, which greatly increases the energy of the propell...

AI Technical Summary

Problems solved by technology

However, for solid fuel ramjet engines, there is a lack of literature reports on the molds for convenient preparation of solid fuel.

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