3d woven space filler
AssigneeRaytheon Technologies Corporation
InventorKathryn S. Read
Life of this patent
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Abstract
A ceramic fiber preform includes a plurality of ceramic fiber plies arranged to define a wall, a void adjacent the wall, and an insert positioned within the void. The insert includes a first region having a first porosity and a second region in physical contact with the first region and having a second porosity. The first region and second region are formed from a woven ceramic material, the wall has a wall porosity, and the first porosity is less than at least one of the second porosity and the wall porosity.
Claims20
A ceramic fiber preform comprising:
- a plurality of ceramic fiber plies arranged to define a wall;
- a void adjacent the wall;
- and
- an insert positioned within the void, the insert comprising:
- a first region having a first porosity;
- and
- a second region in physical contact with the first region and having a second porosity;
- wherein the first region and second region are formed from a woven ceramic material;
- wherein the wall has a wall porosity;
- and
- wherein the first porosity is less than at least one of the second porosity and the wall porosity.
A ceramic fiber preform comprising:
- a woven ceramic insert having a first porosity;
- and
- a plurality of ceramic fiber plies surrounding the insert to form an outer layer;
- wherein outer layer has a second porosity greater than the first porosity.
An insert for inclusion in a void of a ceramic fiber preform, the insert comprising:
- a first region having a first porosity;
- and
- a second region in physical contact with the first region and having a second porosity;
- wherein the first region and the second region are formed from a woven ceramic material;
- and
- wherein the first porosity is different from the second porosity.
Dependencies are inferred from the claim text.