Deterministic manufacturing technologies for polycrystalline magnesium fluoride conformal domes

Hao Hu; Yifan Dai; Chaoliang Guan; Ziqiang Yin; Zhaoze Li

doi:10.1117/12.866858

6 October 2010 Deterministic manufacturing technologies for polycrystalline magnesium fluoride conformal domes

Hao Hu, Yifan Dai, Chaoliang Guan, Ziqiang Yin, Zhaoze Li

Proceedings Volume 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 765526 (2010) https://doi.org/10.1117/12.866858
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

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.

Citation Download Citation

Hao Hu, Yifan Dai, Chaoliang Guan, Ziqiang Yin, and Zhaoze Li "Deterministic manufacturing technologies for polycrystalline magnesium fluoride conformal domes", Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 765526 (6 October 2010); https://doi.org/10.1117/12.866858

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