On the use of magnesium alloys for aerospace and defense mirrors

Kenneth S. Woodard; Lovell E. Comstock; Leonard Wamboldt; Joseph C. Crifasi

doi:10.1117/12.2050609

24 June 2014 On the use of magnesium alloys for aerospace and defense mirrors

Kenneth S. Woodard, Lovell E. Comstock, Leonard Wamboldt, Joseph C. Crifasi

Proceedings Volume 9070, Infrared Technology and Applications XL; 90702C (2014) https://doi.org/10.1117/12.2050609
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

Extreme light-weighting is important in many aerospace and defense applications but the cost associated with beryllium or other exotic materials can be prohibitive. The current standard for producing cost effective, high performance mirrors is to diamond machine mirror blanks from aluminum alloy stock. About 80% material removal is the limit for geometrical lightweighting while still retaining the structural integrity required for optical fabrication. To reduce weight further requires alternative materials. This paper summarizes the status of diamond machined finishing and coating of magnesium alloys to produce cost effective, lightweight mirrors with high, broadband reflectivity and low scatter finish.

Citation Download Citation

Kenneth S. Woodard, Lovell E. Comstock, Leonard Wamboldt, and Joseph C. Crifasi "On the use of magnesium alloys for aerospace and defense mirrors", Proc. SPIE 9070, Infrared Technology and Applications XL, 90702C (24 June 2014); https://doi.org/10.1117/12.2050609

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