US 11,141,960 B2 · Composite part with smooth outer face and manufacturing method thereof

Abstract

A part for an aircraft turbojet engine nacelle is made of a composite material and includes at least one outer face (S1), a fibrous preform including fiber locks and having a surface(s) delimiting depressions between fiber locks, a covering material which at least partially covers the surface(s) of the fibrous preform and in particular the depressions, and a matrix which binds entirely the covering material and the fibrous preform. The covering material is a fibrous mat and the outer face (S1) is smooth. A method for manufacturing such a part includes manufacturing the fibrous preform, providing a fibrous mat, depositing the fibrous preform and fibrous mat in a mold, dispersing the matrix between the fibers of the preform and mat and consolidating the fibrous preform and mat.

Claims24

Dependent claims

A part for an aircraft turbojet engine nacelle, the part being made of a composite material and including at least one outer face, the part comprising:

a fibrous preform including fiber locks and a surface defining depressions between the fiber locks, the depressions having a height between one and two times a height of the fiber locks;
a covering material which at least partially covers the surface of the fibrous preform and the depressions;
and
a matrix which binds the covering material and the fibrous preform,
wherein the covering material is an unwoven fibrous mat including at least one fiber extending substantially parallel to the at least one outer face of the part and above at least one of the depressions between the fiber locks of the fibrous preform, wherein the at least one outer face is smooth.

2 more elements

Dependencies are inferred from the claim text.

Composite part with smooth outer face and manufacturing method thereof

Life of this patent

Composite part with smooth outer face and manufacturing method thereof

Life of this patent

Abstract

Claims24