Accession Number : AD0615773

Title :   EFFECT OF THEVENIN EQUIVALENT INTERNAL IMPEDANCE ON VELOCITY CONTROL AND ACOUSTIC POWFOR PLANAR BROADSIDE ARRAYS FOR DIFFERENT DRIVING LEVEL LIMITATIONS.

Descriptive Note : Research rept.,

Corporate Author : NAVY UNDERWATER SOUND LAB NEW LONDON CONN

Personal Author(s) : Porter,David T.

Report Date : 28 APR 1965

Pagination or Media Count : 46

Abstract : A Thevenin equivalent circuit for array elements, which has an input force in series with a radiation impedance ZI, is discussed. The arrays considered are 80-element, close-packed, unshaded arrays, with many different ka and ZI. Four limitations to input voltage are discussed; velocity, transducer voltage, available power, and cavitation. A velocity control factor is presented, where Z12 is the mutual impedance between nearest neighboring pistons. Velocity-limited acoustic power decreased as UCF increased.

Descriptors :   (*SONAR EQUIPMENT, ACOUSTIC IMPEDANCE), (*ACOUSTIC IMPEDANCE, SONAR EQUIPMENT), TUNING DEVICES, CIRCUITS, VELOCITY, CONTROL SYSTEMS, TRANSDUCERS, CAVITATION, VOLTAGE

Distribution Statement : APPROVED FOR PUBLIC RELEASE