NEARFIELD SOUND PRESSURE ON SQUARE AND RECTANGULAR ARRAYS WITH BEAM STEERING.
Abstract
In this report, square and rectangular radiators are to be considered as models of arrays of closely packed rectangular tranaansducers. The distribution of the nearfield sound pressure on the surface of an array is shown to be affected by the steering of the main beam of the farfield pattern. The numerical results show that the pressures pile up near the leading edge of the array as the beam is steered to a large angle. Expressions of the nearfield pressure are derived for an infinitely long rectangular strip and a finite, slender, rectangular array with end-fire beam steering across the width and along the longer side, respectively. The numerical data of the pressure on various finite, steered arrays are determined by an electronic computer for steering angles other than the end fire. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 13, 1965
- Accession Number
- AD0456708
Entities
People
- Norman T. Chin
Organizations
- Navy Underwater Sound Laboratory