An aircraft propeller blade including a streamlined structure constituted by at least one piece of fiber reinforcement obtained by three-dimensionally weaving yarns and densified by a matrix, together with a spar including an enlarged portion extending outside the fiber reinforcement and forming the root of the blade, and a shaping portion present in a housing arranged inside the fiber reinforcement. The fiber reinforcement includes a non-interlinked zone forming the housing inside the fiber reinforcement. The non-interlinked zone opens out into the bottom portion and into the rear edge of the fiber reinforcement so as to form an opening for inserting the shaping portion of the spar into the housing of the fiber reinforcement. The opening present in the rear edge of the fiber reinforcement extends over a height that is less than the height of the housing.
КОМПОЗИТНАЯ ЛОПАСТЬ ВИНТА ДЛЯ ЛЕТАЛЬНОГО АППАРАТА
11.08.2017
Patent
Elektronische Ressource
Russisch
IPC: | B64C AEROPLANES , Flugzeuge |
Europäisches Patentamt | 2017
ЛОПАСТЬ НЕСУЩЕГО ВИНТА АВТОЖИРА ДЛЯ СОЗДАНИЯ ПОДЪЕМНОЙ СИЛЫ ЗА СЧЕТ АВТОРОТАЦИИ
Europäisches Patentamt | 2020