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Loralee Williams UNCLASSIFIED. UNCLASSIFIED UNCLASSIFIED.

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Presentation on theme: "Loralee Williams UNCLASSIFIED. UNCLASSIFIED UNCLASSIFIED."— Presentation transcript:

1 Loralee Williams UNCLASSIFIED

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6 Topics What is sonar Snells Law Factors for ranges/how it is measured Military history of sonar Passive sonar - types -how it is used UNCLASSIFIED

7 What is sonar? Sonar is actually not a word but an acronym SOund Navigation And Ranging UNCLASSIFIED

8 Snells Law Sound is LAZY. It wants to take the slowest route possible. Example: Thunder and Lightning UNCLASSIFIED

9 Factors for Ranges. Temperature Depth/Pressure Salinity (11.25 × temperature (in °F)) + ( × depth (in feet)) + salinity (in parts-per-thousand ) UNCLASSIFIED

10 Expendable Bathythermograph (XBT) UNCLASSIFIED

11 XBT Drop UNCLASSIFIED

12 Sonar and the Military World War I passive systems to locate submarines World War II- saw the first active sonar systems sonobuoys UNCLASSIFIED

13 Passive Sonar UNCLASSIFIED

14 Types of Passive Sonar AN/SQS-53C Hull Mounted Sonar AN/SQR-19 TowedArray Sonar AN/SQQ-28 LAMPS MK III Sonobuoy Processing System AN/AQS-13F Dipping Sonar Undersea Surveillance System (IUSS) UNCLASSIFIED

15 A sound wave turned into a digital picture. UNCLASSIFIED

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18 What can be determined with passive sonar? Blade rate Shaft rate # of blades Cylinder firing rate # of cylinders Power plant Turbine rate Fog horns UNCLASSIFIED

19 UNCLASSIFIED Power Plant 50/60 HZ Engine Waterfall Display

20 UNCLASSIFIED BIG TROUBLE!!!!!!!!!!!

21 Review What is sonar Snells Law Factors for ranges/how it is measured The military history of sonar Passive sonar - types -how it is used UNCLASSIFIED

22 Work cited Basic Sonar System." Federation of American Scientists. 18 Apr "MMAD - Products - Kaon Ltd." Home - Kaon Ltd. 19 Apr "NOAA/AOML UOTC What is an XBT?" University of North Carolina Wilmington. 20 Apr "Refraction and Snell's Law." 12 Apr "Review Submarine Simulation." Easynet Connect - Quality Business Internet Access. 15 Apr "Sonar -." Wikipedia, the free encyclopedia. 17 Apr "Torpedo Hit (ABC Science)." ABC.net.au. 21 Apr "Understanding Sonar." The U.S. Navy. 15 Apr


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