ATTACHMENT APPARATUS FOR CERAMIC MATRIX COMPOSITE MATERIALS

摘要

A first ceramic matrix composite structure having a first flange with a first aperture, and a second structure having a second flange with a second aperture are clamped together by a fastener and spring assembly. The second flange is in contact with the first flange and the apertures of the first and second flanges align with each other. A threaded fastener having a thermal expansion rate that is different than the thermal expansion rate of at least one of the first ceramic matrix composite structure and second structure extends through the aligned apertures. The fastener includes a bolt, a nut, and a spring assembly that maintains a constant clamping pressure irrespective of the thermal expansion differences between the bolt and the first ceramic matrix composite structure and second structure.

主权项

1. An apparatus comprising:
a first ceramic matrix composite structure, having a first flange with a first aperture; a second structure, having a second flange with a second aperture, the second flange being in contact with the first flange with the second aperture aligned with the first aperture; and a fastener having a portion extending through the first aperture of the first flange and the second aperture of the second flange, the fastener having a thermal expansion rate different than a thermal expansion rate of at least one of the first ceramic matrix composite structure and the second structure; the fastener including a spring assembly that maintains a clamping pressure irrespective of thermal expansion differences between the fastener and at least one of the first ceramic matrix composite structure and the second structure.