PROPELLER BLADE WITH HOUSINGS AND REINFORCING LENGTHS AND PROPELLER COMPRISING AT LEAST ONE SUCH BLADE

摘要

The invention relates to a propeller blade comprising a hollow envelope (1) forming an upper surface (5) and a lower surface (4) extending from a blade root to a free end in the span direction, and a chord disposed in the hollow shell (1) and comprising a box spar (8) having a plurality of flanges (9a, 9b, 10a, 10b) in surface contact with the hollow shell (1) so as to ensure structural support of the hollow envelope (1) and at least two cavities (15, 16) spaced apart from one another in the direction of the rope (25), characterized in that it further comprises at least two reinforcing beams (6, 7) extending between the frame and the hollow envelope.