Abstract:

The previous design used a two-part casing; however, this casing had a long sealing perimeter. By mounting the circuit boards onto a central chassis, the new ISIS uses a single enclosure which slides over the chassis. The enclosure is designed so that it uses an o-ring to form a tight fitting seal with the front screen. These improvements have eliminated the need for any adhesives.

  smiths_aerospace.pdf (781.72 KB, 28 August 2008)