LORAN-C AIRBORNE NAVIGATOR.

A Loran-C Airborne Navigator for use in Coast Guard helicopters is described. Cockpit mounted, the device weighs only 12 pounds, using LSI circuitry extensively and includes a microcomputer and a completely automatic Loran-C receiver. The navigator generates steering information relative to a trackline defined by up to nine operator entered waypoints. Results to date indicate the receiver will perform satisfactorily in the Coastal Confluence Zone Loran-C system. Flight testing on prototype systems indicates that navigation accuracy better than 190 meters is probable and rendezvous to within 10 meters have been accomplished.