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/lp/spie/lightning-testing-of-a-linear-optical-position-transducer-95jRJZTgUR
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- Publisher
- SPIE
- Copyright
- Copyright © 2004 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
- ISSN
- 0277-786X
- eISSN
- 1996-756X
- DOI
- 10.1117/12.188841
- Publisher site
- See Article on Publisher Site
Abstract
An advantage to using a Fly-By-Light system with fiberoptic transducers and interconnects is immunity to disrupts and/or failure due to lightning strikes. The most vulnerable area of any flight control system on a helicopter is the swashplate region, where linear optical position transducers (LOPTs) would measure mean rotor actuator ram position. On the RAH-66 Comanche helicopter, LOPTs would be mounted inside the cylinders of these rams, providing protection from a direct lightning attachment to the ram. Lightning survivability testing was conducted at the Boeing Developmental Center's Lightning Facility the week of December 14 - 18, 1992. A time-division multiplexed LOPT was tested in a protected, aircraft-similar installation as well as unprotected. Transducer data during the strikes were compared to the results of similar tests performed on a linear variable differential transformer.
Journal
Proceedings of SPIE – SPIE
Published: Oct 4, 1994