The invention relates to a propeller blade which comprises a hollow casing (1) forming an extrados (5) and an intrados (4) which extend from a blade shank to a free end in the direction of the span, and a framework which is arranged in the hollow casing (1) and comprises a box spar (8), having a plurality of soles (9a, 9b, 10a, 10b) in surface contact with the hollow casing (1) so as to provide structural support for the hollow casing (1), and at least two cavities (15, 16) which are spaced apart in the direction of the chord (25), wherein the propeller blade further comprises at least two reinforcing spars (6, 7) which extend between the framework and the hollow casing.
Propeller blade with reinforcing spars and boxes, and propeller comprising at least one such blade
14.02.2018
Patent
Elektronische Ressource
Englisch
Propeller blade with reinforcing spars and boxes, and propeller comprising at least one such blade
Europäisches Patentamt | 2016
|