CHORD A CLUE

E&MP124.004

Sonics

May 25, 1967 [PMRO52567]

Sonorous tones of church organ which caused hymn book to vibrate provide an elusive clue to Ron Botsco, senior research engineer at North American Aviation, and led to development of a unit that detects hidden defects in honeycomb panels used in aircraft and space vehicles. The Sonic Resonator is now being used by a number of aerospace firms, including Boeing, Douglas, Martin Denver and Lockheed Georgia, in tests of aircraft and missile honeycomb structures.

Original Caption by Science Service
^©North American Aviation, Inc.