期刊
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
卷 13, 期 1, 页码 3-16出版社
WILEY-BLACKWELL
DOI: 10.1111/ijac.12496
关键词
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资金
- German Research Foundation (DFG) [SFB-TRR 40]
- Institute of Space Propulsion, DLR Lampoldshausen, Germany
Nozzle extensions made of ceramic matrix composites (CMCs) have shown the potential to replace heavy superalloy nozzles and improve the performance of future upper-stage and orbital rocket engines. Gas permeability has been reported to be a critical issue during the manufacture for CMC nozzles. This work shows the manufacture of a dense radiation-cooled C/C-SiC nozzle demonstrator. A multi-angle fiber architecture was applied using filament winding technique to reduce the incidence of delaminations during the manufacturing process under high temperatures. Additional efforts were made to improve the final gas tightness and reduce the amount of residual silicon by means of an adapted liquid silicon infiltration process. The manufacture, the material, and structural characterization as well as a finite element analysis of a performed internal pressure test are presented.
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