A kind of rubber plugging cover of missile launching tail nozzle

Abstract

The invention discloses a rubber blanking cap of a guided missile engine exhaust nozzle, which comprises a throat liner, a front rubber layer, a rear rubber layer and blanking cap clamp cloth. The throat liner is made of a felt-carbon / carbon composite; the throat liner, and an assembly of the front rubber layer and the rear rubber layer are bonded at an expansion section of the throat liner; the assembly is formed by bonding and solidifying the front rubber layer and the rear rubber layer in a mold; the blanking cap clamp cloth is sandwiched in the middle for reinforcement; the front rubber layer and the rear rubber layer are made of a butyronitrile rubber material; and the blanking cap clamp cloth is butyronitrile oil-proof rubberized fabric. With the adoption of the structure of the rubber blanking cap of the exhaust nozzle, compared with the prior art, the rubber blanking cap has the advantages and benefits that the rubber blanking cap can bear internal and external pressure; the original double rubber blanking cap design structure is simplified; the technological operation is convenient; ejection substance of an engine during operation is decreased; and the safety of missile equipment such as a gas vane is guaranteed.

Description

technical field [0001] The invention relates to a shell structure of a solid rocket motor, in particular to a rubber plugging cover for a missile launch tail nozzle. Background technique [0002] The tail nozzle is one of the important parts in the engine structure. As the energy conversion device of the engine, it converts the thermal energy of the high-temperature gas into the kinetic energy of the gas, thereby generating thrust. At the same time, it is also a gas flow control device, which can establish a certain working pressure in the combustion chamber. In the design of the engine tail nozzle, in order to make the engine have better performance, on the premise of meeting the overall requirements, at the same time, considering the requirements of ignition pressure buildup, combustion chamber sealing and bearing the internal and external pressure of the launch box, it is necessary to focus on solving the blocking cover Adaptability of structural design. [0003] Existi...

AI Technical Summary

Problems solved by technology

The main problems of the double rubber plugging structure are: the structure is relatively complex, the process control is difficult, and the reliability is relatively low

The main problems with the structure of the aluminum plug cover are: the aluminum plug cover cannot be completely melted at the beginning of the engine operation, and the ejection is relatively large, which may cause damage to the equipment on the gas rudder and other bombs.

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