Recent content by pshaas

In the 1960's, the AN/AQA-5 (JEZEBEL) Indicator Group was in development at the Naval Air Development Center (Johnsville/Warminster) for eventual installation in the new P-3 aircraft. At the time, the Center had no P-3's available yet, and the AQA-5 gram-writer was just too physically large to...

In the mid-50's, the Naval Air Development Center, Johnsville, PA, was involved in the development of an explosive echo-ranging technique employing practice depth charges (PDC's) -- later known as Signals, Underwater Sound (SUS) -- and passive-listening sonobuoys to detect quiet submarines...