FIELD: aviation.
SUBSTANCE: method for producing helicopter tail rotor blade is in cutting prepregs into workpieces in accordance with the cutting map and a given fibrous filler orientation, packages are completed, the packages are spread on the mandrels, packages are vacuum-processed and pre-pressurized in an autoclave on a mandrel. On the pressurized packages the following is installed: centering loads, anti-icing system, lightning protection wire, and balancing weight. Completed packages are placed in the mould on the silicone rubber mandrel, the mould is closed, the temperature is increased stepwise with definite time, the mould is cooled to the ambient temperature, the part is taken out, and the silicone-rubber mandrel is removed. The inner cavity of finished blade shell is filled with polyurethane by casting under pressure with free foaming.
EFFECT: improved production quality of helicopter tail rotor blade due to obtaining stable blade mass-elastic characteristics.
8 dwg
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