Annular combustion increasing structure on charging outer end surface of missile engine

Abstract

The invention discloses a circumferential combustion-increasing structure on the outer end surface of the charge of a missile solid motor, including a charge column, a cladding sleeve and a liner. The grain is bonded to the covering sleeve through the lining layer, and the initial combustion surface of the grain can be changed by adjusting the length of the covering sleeve, so that the engine can meet the overall engine initial thrust index requirements. Compared with the prior art, the present invention adopts the hoop-increasing structure, and its advantages and beneficial effects are: the hoop-increasing structure is easy to measure and detect, and at the same time, it eliminates the stress concentration and cracks of the grain caused by the complex profile , so that the risk of engine operation is reduced; the initial burning surface of the grain can be effectively adjusted without losing the amount of medicine, so that the initial thrust of the engine can be increased, thereby ensuring the mass ratio of the engine.

Description

technical field [0001] The invention relates to an internal charging structure of a solid rocket motor, in particular to a ring direction combustion-increasing structure on the outer end surface of a missile motor charging. Background technique [0002] The charge in the combustion chamber is one of the important parts of the engine structure, which provides power for the engine to push the missile body. In order to meet the ballistic requirements of the missile, sometimes in the engine development task book, there will be requirements for the initial thrust of the engine. Therefore, in the charge design of the engine combustion chamber, consideration should be given to increasing the burning surface of the charge column at the initial stage of combustion, so as to ensure that the thrust of the engine at the initial stage of operation meets the requirements of use, so that the missile can be launched reliably. [0003] The existing combustion chamber charge in the form of...

AI Technical Summary

Problems solved by technology

[0004] The problem with drilling the end face of the grain is that once there is a crack in the deep hole, it cannot be detected by conventional means, which increases the risk of the engine

At the same time, drilling will reduce the amount of medicine, reduce the mass ratio of the engine, and reduce the performance

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