초록 ▼

A composite propeller blade and hub attachment assembly is disclosed. The assembly includes a blade root having a first connecting member and a hub arm having a second connecting member. The first connecting member meshingly engages the second connecting member. A device preloads the blade root and

A composite propeller blade and hub attachment assembly is disclosed. The assembly includes a blade root having a first connecting member and a hub arm having a second connecting member. The first connecting member meshingly engages the second connecting member. A device preloads the blade root and the hub arm. The first and second connecting members form a slot for receiving the preloading device. The preloading device includes an outer movable unit, an inner movable unit, and a mechanism for displacing the outer and inner movable units relative each other. As the mechanism for displacing relatively moves the inner and outer units, the preloading device is caused to expand and tension the blade root and hub arm for mechanically preloading the blade, in a manner which increases the low centrifugal load off lightweight composite blades.

대표청구항 ▼

[ What is claimed is:] [1.]1. A composite propeller blade and hub attachment assembly, comprising:a blade root having a first connecting member;a hub arm having a second connecting member, wherein said first connecting member meshingly engages said second connecting member;means for preloading said

[ What is claimed is:] [1.]1. A composite propeller blade and hub attachment assembly, comprising:a blade root having a first connecting member;a hub arm having a second connecting member, wherein said first connecting member meshingly engages said second connecting member;means for preloading said blade root and said hub arm, wherein said first and second connecting members form means for receiving said means for preloading, said means for preloading comprising an outer movable unit, an inner movable unit, and means for displacing said outer and inner movable units relative each other,wherein as said means for displacing relatively moves said inner and outer units, said means for preloading is caused to expand and tension said blade root and hub arm for mechanically preloading the blade.