Method for evaluating sand corrosion resistance of helicopter rotor blade protection material

Abstract

The invention belongs to the technical field of helicopter material application and management, and particularly relates to a method for evaluating the sand corrosion resistance of a helicopter rotorblade protection material. The method specifically comprises the following steps of S1, manufacturing a rotor blade protection material test piece (100), S2, designing a test device (200), and installing the test piece (100), S3, determining a test parameter matrix, wherein the test parameters comprise a sand blowing angle, a sand blowing speed, a sand type and a test temperature, S4, performing atest according to the test parameter matrix determined in the step S3, and S5, evaluating test results. The method can be used for evaluating the sand corrosion resistance of the helicopter rotor blade protection material in the flight state, the effect which cannot be achieved by an existing traditional method at present is achieved, the evaluation result can provide important support for prediction of the actual service life of the blade protection material, and the domestic blank is filled up.

Description

technical field [0001] The invention belongs to the technical field of application and management of helicopter materials, and in particular relates to a sand erosion resistance evaluation method of a helicopter rotor blade protection material. Background technique [0002] Military helicopters frequently serve in low-altitude, heavy rain fields and unpaved runways (with dust cloud environment). Sand, gravel, dust, etc. beating on the surface of the rotor blade composite material can easily lead to fiber breakage or interface delamination in the composite material, leading to premature failure of the structure. A variety of methods have been adopted at home and abroad to protect the sand erosion resistance of helicopter blades. Metal materials such as iron alloys, titanium alloys, and nickel alloys are coated on the leading edge of the blades, and non-metallic materials such as polyurethane and polycarbonate are used or sprayed directly on the blades. Protective coatings ar...

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Problems solved by technology

[0004] Purpose of the present invention: To address the defects of the existing assessment methods, the present invention designs a test matrix suitable for the actual service state according to the environmental characteristics of the helicopter, and designs multiple sand blowing angles, multiple sand blowing speeds, and two types of sand blowing. Types and various ambient temperatures are used for laboratory assessment of protective materials, and a method for evaluating the sand erosion resistance of protective materials for helicopter rotor blades is provided, which fills the gap in China

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