| 摘要 |
Woven preforms, for example those used for jet aircraft engine fancases, may need additional stiffeners (502, 503) to improve the strength and/or dynamic performance of the preform assembly, as well as to serve as attachment points. The present invention describes a woven preform that include stiffeners (502, 503). The preform includes an intermediate stiffener wrap (501) wrapped onto a base sub-preform wrap, wherein the intermediate stiffener wrap incorporates intermediate stiffeners (502, 503). |
