US 2014/0212293 A1 · AIRCRAFT ROTOR BLADE AND RELATIVE FORMING METHOD

Abstract

An aircraft rotor blade having a root portion having a through seat and designed for connection to the rotor; and a main portion extending from the root portion. The blade is produced by polymerizing an assembly having a main structure of composite material, and a composite material covering defining the outer surface of the blade. At the root portion, the main structure has a contoured block; and a lamina member extending about at least part of the block, and having a first part adhering to a first peripheral portion of the block, and a second part spaced apart from and facing a second peripheral portion of the block to form the seat; the lamina member having a pre-preg of continuous unidirectional fibres.

Claims24

Dependent claims

An aircraft rotor blade (1) comprising a root portion (2) having a through seat (3) and designed for connection to the rotor;

and a main portion (4) extending from said root portion (2);
said blade (1) being produced by polymerizing an assembly comprising a main structure (5) of composite material, and a composite material covering (6) defining the outer surface (7) of the blade (1);
the blade being characterized in that, at said root portion (2), said main structure (5) comprises a contoured block (8);
and a lamina member (16) extending about at least part of said block (8), and having a first part (17) adhering to a first peripheral portion (12) of said block (8), and a second part (18) spaced apart from and facing a second peripheral portion (13) of the block (8) to form said seat (3);
said lamina member (16) comprising a pre-preg of continuous unidirectional fibres.

2 more elements

Dependencies are inferred from the claim text.

Aircraft rotor blade and relative forming method

Life of this patent

Aircraft rotor blade and relative forming method

Life of this patent

Abstract

Claims24