SUBMARINE SONAR WET END DEVELOPMENT in ASELSAN Muhammed N. enlik , - - PowerPoint PPT Presentation

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SUBMARINE SONAR WET END DEVELOPMENT in ASELSAN Muhammed N. enlik , - - PowerPoint PPT Presentation

Aug 16, 2023 236 likes •384 views

SUBMARINE SONAR WET END DEVELOPMENT in ASELSAN Muhammed N. enlik , Erdem aatay, mer zdemir, Osman Yalnkaya, Kerim epni, Aykut ahin Defence Systems Business Sector , ASELSAN Inc. #UDT2019 Outline Motivation Review of

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#UDT2019

SUBMARINE SONAR WET END DEVELOPMENT in ASELSAN

Muhammed N. Şenlik, Erdem Çağatay, Ömer Özdemir, Osman Yalçınkaya, Kerim Çepni, Aykut Şahin

Defence Systems Business Sector, ASELSAN Inc.

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#UDT2019

Outline

  • Motivation
  • Review of the Models
  • Pulse-Echo Measurement
  • Near-Field Methods
  • Test Setup
  • Equivalent Circuit
  • Actual Measurements
  • Summary
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#UDT2019

Motivation

  • Half Life-Cycle Full Modernization Phase of Preveze Class Submarine
  • Operating Frequency < 10 kHz, Characteriza < 1 kHz
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#UDT2019

Review

  • Pulse-Echo Measurement;
  • P. A. Levin, Calibration of hydrophones, B & K Technical

Review, 3 – 17 (1973)

sufficient depth to discriminate the direct and echo signal

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#UDT2019

Review

  • Defence Research Lab (DRL) Method;
  • R. J. Bobber, Underwater electroacoustic measurements,

Peninsula Publishing, Los Altos, 1988

Number of measurement points is high

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#UDT2019

Review

  • Trott Method;
  • R. J. Bobber, Underwater electroacoustic measurements,

Peninsula Publishing, Los Altos, 1988

Preciese alignmet of projectors

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#UDT2019

Test Setup

  • ODTU Yalıncak Facility, in Ankara, close proximity of ASELSAN;
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#UDT2019

Test Setup

  • ODTU Yalıncak Facility, in Ankara, close proximity of ASELSAN;

Reference Projector & Hydrophone

  • Neptune D11 & Neptune D140H
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#UDT2019

Test Setup – Equivalent Circuit

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#UDT2019

  • Projector & Hydrophone -> Spherical
  • Projector -> PZT–4
  • Hydrophone -> PZT-5H

Test Setup – Equivalent Circuit

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#UDT2019

Test Setup – Reference Measurement

  • Pulse Width = 5 ms
  • Transient Response
  • Good Agreement
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#UDT2019

Directional Hydrophone

Actual Measurements - Transient

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#UDT2019

Directional Hydrophone

Actual Measurements - RVS

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#UDT2019

Summary

  • Low Frequency Chracterization.
  • Prior knowledge on behavior
  • Use of equivalent circuit
  • Suitable for characterization of output of mass production.