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Proceedings Paper

RAMICS laser optical bench weight reduction
Author(s): Geoffrey Heberle
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Paper Abstract

To increase margins over requirements and improve structural performance, it was desired to reduce the weight of the optical bench in the Laser Transmitter Unit (LTU) of the Rapid Airborne MIne Clearance System (RAMICS) program. First-mode response for both the optical bench and bench/housing combination is of critical importance to the stability and long-term field performance of this system. Several candidate materials were reviewed and analyzed against the previous design in 7075 aluminum. AlBeMet AM162 was chosen for its high Young's modulus, lower density, and a number of other factors as discussed. Finite element modeling is presented which was used in the downselect process. An optical bench weight reduction of 50% was achieved due to material and design changes, as well as an improvement in the first-mode frequency of the laser transmitter based on analysis. Vibration testing results and a comparison of fabrication costs are also presented.

Paper Details

Date Published: 19 August 2005
PDF: 8 pages
Proc. SPIE 5868, Optical Materials and Structures Technologies II, 58680Y (19 August 2005); doi: 10.1117/12.617066
Show Author Affiliations
Geoffrey Heberle, Northrop Grumman - Cutting Edge Optronics (United States)

Published in SPIE Proceedings Vol. 5868:
Optical Materials and Structures Technologies II
William A. Goodman, Editor(s)

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