Engine fairing

Abstract

The invention belongs to the field of power devices of helicopters, and relates to a detachable engine fairing of a helicopter and heat-insulation plates of the detachable engine fairing. The heat-insulation plates are respectively mounted on the left side and the right side of the engine fairing, each heat-insulation plate consists of an inner skin, a heat-insulation material and an outer skin, the inner skins and the outer skins are made of stainless steel, and black natural-dry heat-resistant paint is coated on outer surfaces of the inner skins and the outer skins. The engine fairing and the heat-insulation plates have excellent fitting property and reliability, and realize an excellent heat-insulation effect, requirements on temperature of the fairing are met, long-term problems of bulging, layering, even scorching and the like of an existing engine fairing due to the fact that the engine fairing contacts with high-temperature areas for a long time are solved, the integral quality of the helicopter is greatly improved, attendance rate of the helicopter is guaranteed, simultaneously, time and expenditure for maintaining the helicopter in an external field and replacing the engine fairing are saved, and the engine fairing has a remarkable economic benefit.

Description

technical field [0001] The invention belongs to the field of helicopter power devices and relates to a detachable helicopter engine fairing and a heat shield thereof. Background technique [0002] With the continuous development of aviation weapon equipment technology and the increase of engine power demand, the high temperature resistance performance, reliability and safety requirements of the detachable engine rear fairing are also getting higher and higher. At present, foreign helicopters use the following two measures to improve the high temperature resistance of the engine cowling: one is to start with the material to improve the high temperature resistance of the material itself; the other is to use a heat shield made of high temperature resistant resin to isolate the High temperature heat from the engine exhaust pipes to the cowling. [0003] Due to the relatively weak basic research on the structure of composite materials in my country, the application and developme...

AI Technical Summary

Problems solved by technology

[0003] Due to the relatively weak basic research on the structure of composite materials in my country, the application and development of composite materials is relatively slow. Combined with the actual development of the field of composite material technology in my country, after various analysis, it is currently impossible to solve this problem from the perspective of material performance.

For heat shields made of high-temperature-resistant resin, the manufacturing level is greatly restricted due to the complexity of the manufacturing process brought about by the particularity of the material process.

In order to solve this problem, there are also methods such as adding a layer of high-temperature-resistant adhesive film to the high-temperature area of ​​the fairing, and coating high-temperature heat-resistant paint on the outer surface of the fairing, but the heat insulation and heat-resistant effects are not ideal.

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