Miles of copper wire connect sensors, controls, and systems which add thousands of pounds to an aircraft, thus there has been a continuous drive for the use of lighter aluminum conductors, and maybe at some point, carbon nanotubes. Wireless Avionics Intra-Communications (WAIC) has emerged as a concept to “cut the cord” for certain intra-aircraft links. By using radio links between onboard components, WAIC could reduce wiring weight and simplify installation. Idealized models suggest that perhaps 20–30% of an aircraft’s wiring (especially for non-critical data communications) might be replaced by wireless systems. Beyond weight savings, wireless sensors offer easier reconfiguration and the ability to monitor hard-to-wire parts (like rotating or moving components). The background of this idea, the design approach, and its limitations are discussed in this article. Read more