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Proceedings Paper

Deterministic manufacturing technologies for polycrystalline magnesium fluoride conformal domes
Author(s): Hao Hu; Yifan Dai; Chaoliang Guan; Ziqiang Yin; Zhaoze Li
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Paper Abstract

Conformal domes can improve aerodynamic performance compared with the more traditional flats and spheres domes, but the difficulties for manufacturing and testing are obvious because their particular materials, their constantly changing curvature and steep slopes induce the most conventional polishing and metrology solutions could be incompatible. This paper has researched the technologies of grinding, diamond turning, polishing and testing for polycrystalline magnesium fluoride conformal domes. The processing parameters of different technology were optimized and the appropriate procedure was determined. An ellipsoid conformal dome with 120mm caliber and 1:1.2 slenderness ratio was processed using these technologies. The final generatrix PV value measured using the profile testing instrument is less than 4um and the surface roughness (Ra) is less than 10nm. The work was funded by certain preliminary research project under contract 51318020101.

Paper Details

Date Published: 6 October 2010
PDF: 6 pages
Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 765526 (6 October 2010); doi: 10.1117/12.866858
Show Author Affiliations
Hao Hu, National Univ. of Defense Technology (China)
Yifan Dai, National Univ. of Defense Technology (China)
Chaoliang Guan, National Univ. of Defense Technology (China)
Ziqiang Yin, National Univ. of Defense Technology (China)
Zhaoze Li, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 7655:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Yoshiharu Namba; David D. Walker; Shengyi Li, Editor(s)

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