Low Frequency Multi-Mode Pipe Projector

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Authors
  1. Fleming, R.A.G.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
The multi-mode pipe projector (MMPP) is a recently patented sonar projector capable of very wide bandwidth. The projector generates this bandwidth with an optimized approach to overlapping numerous drive motor and waveguide resonances. The low frequency MMPP (LF MMPP) was developed by scaling the original 3-35 kHz MMPP’s dimensions by 5/2 and optimizing for an available piezoelectric ring size for a projected bandwidth of 1.3-13 kHz. A single prototype was built and tested and its bandwidth mirrored the finite element predictions for performance. Deep water testing revealed distortion-limited shallow-water performance, which will require the LF MMPP to be operated at a depth of more than 266 m at high drive voltage.

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Report Number
DRDC-ATLANTIC-TM-2006-248 — Technical Memorandum
Date of publication
01 Nov 2006
Number of Pages
32
DSTKIM No
CA029037
CANDIS No
527289
Format(s):
CD ROM

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