Vibration protection of sensitive components of infrared equipment in harsh environments

Article type: Research Article

Authors: Veprik, A.M. | Babitsky, V.I. | Pundak, N. | Riabzev, S.V.

Affiliations: Department of Mechanical Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK | R Department, RICOR, Cryogenic and Vacuum Systems, Kibbutz En Harod Ihud, 18960, Israel

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Abstract: This article addresses the principles of optimal vibration protection of the internal sensitive components of infrared equipment from harsh environmental vibration. The authors have developed an approach to the design of external vibration isolators with properties to minimise the vibration-induced line-of-sight jitter which is caused by the relative deflection of the infrared sensor and the optic system, subject to strict constraints on the allowable sway space of the entire electro-optic package. In this approach, the package itself is used as the first-level vibration isolation stage relative to the internal highly responsive components. It was predicted analytically, and confirmed experimentally, that the proposed vibration isolation system would be capable of a sixfold reduction of the dynamic response of the infrared sensor as compared to the case of rigid mounting of the entire package.

Journal: Shock and Vibration, vol. 8, no. 1, pp. 55-69, 2001