Title :
Fabrication of C-SiC composite mirrors
Author :
Kowbel, W. ; Woida, R. ; Withers, J.C.
Author_Institution :
NER Corp., Tucson, AZ, USA
Abstract :
A novel technology to fabricate ultralightweight mirrors was demonstrated. High thermal conductivity C-C composite integrated honeycomb face sheets were fabricated using a tape layup. Chemical vapor deposition (CVR)-SiC was employed to produce a functionally graded transition in CTE from about 0 ppm/K to about 4.5 ppm/K A crack free CVR-SiC surface was achieved which was subsequently polished. A 1 kg/m2 SiC mirror structure was demonstrated for a 12 cm structure and 1 kg/m2 was demonstrated for a 0.5 in structure.
Keywords :
carbon fibre reinforced composites; chemical vapour deposition; mirrors; optical fabrication; optical materials; silicon compounds; thermal conductivity; thermal expansion; 0.5 in; 12 cm; C-SiC; C-SiC composite; CTE; chemical vapor deposition; crack free surface; integrated honeycomb face sheets; tape layup; thermal conductivity; ultralightweight mirrors; Fabrication; Mechanical factors; Mirrors; Optical distortion; Optical films; Optical materials; Silicon carbide; Space technology; Temperature; Thermal conductivity;
Conference_Titel :
Aerospace Conference Proceedings, 2002. IEEE
Print_ISBN :
0-7803-7231-X
DOI :
10.1109/AERO.2002.1035272
