US 12,358,619 B2
Braiding
Patrice Brion, Lunan (FR); and Pascal Amat, Figeac (FR)
Assigned to RATIER-FIGEAC SAS, Figeac (FR)
Filed by Ratier-Figeac SAS, Figeac (FR)
Filed on Jan. 6, 2021, as Appl. No. 17/142,572.
Claims priority of application No. 20290002 (EP), filed on Jan. 8, 2020.
Prior Publication US 2021/0206481 A1, Jul. 8, 2021
Int. Cl. B64C 27/473 (2006.01); D04C 1/12 (2006.01); D04C 3/48 (2006.01)
CPC B64C 27/473 (2013.01) [D04C 1/12 (2013.01); D04C 3/48 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of applying a braided cover to a core, the method comprising:
braiding a plurality of tows around the core from a plurality of bobbins to form the braided cover,
wherein one or more properties of the tow on a respective bobbin varies along the length of the tow;
wherein the core is the core of a propeller blade and the number of fibres in the tow, the tow diameter or the linear weight of the tow decreases towards a tip region of the core;
wherein the variation of the one or more properties of the tow on a respective bobbin along the length of the tow has the result that the properties of the braided cover are tailored to a particular position on the core and there is no excess braided cover along the length of the propeller core.