Composite air propeller for propulsion of aircraft, has internal longitudinal beams adapted to blades, and number of filling bodies equal to number of longitudinal beams, where section of beams is formed in any shape

摘要

The propeller has internal longitudinal beams (1) adapted to blades. A section of the beams is formed in any shape. A number of filling bodies (2) is equal to a number of the longitudinal beams and made of light material e.g. balsa, for improving structural resistance of the propeller. A shield (3) made of a composite material e.g. carbon, is embedded in a leading edge of the blades. A composite coating (4) e.g. glass, integrates components of the blades. Inserts (6) connect the longitudinal beams through a blade foot to increase resistance of the blades.