1. and 3 were presented one year ago and gave the underlying electrodynamic and structural dynamic principles, problems and approach. References 4 and 5 reported on flight tests i n NASA's OeHavilland DHC-6 Twin Otter and i n a Cessna 206. She Cessna flight tests have led to the Current equipping of a C-206 with a production prototype EIDI system for wings, struts and empennage. Flight tests thickness. i n natural icing are scheduled to beqin i n early February 1985.
2. Astronautics, 1985. A l l rights reserved.