Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Technology Category/ Market
Category – Assistive devices, Manufacturing
Applications –Ship spares, marine equipments
Industry – Ocean technology
Market -The global ship spares and equipment market size attained a value of USD 9.02 billion in 2023. The market value is further anticipated to grow at a CAGR of 4.4% in the forecast period of 2024-2032.
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Problem Statement
- Marine Vessels/Ships are fitted with bottom acoustic transducers that works by projecting a sonar beam into bottom space underwater below the ships for measurement purposes.
- The measurement quality is affected by bubble streams in the flowing water under the ship in the acoustic window around the transducer , thus there is a need of a device that can eliminate the bubbles the region of the transducer.
Technology
- The invention discloses bubble-diverter bow for a vessel that comprises a bottom SONAR transducer equipped oceanographic and research vehicle.
- It comprises a plurality of variants, with predefined geometry parameters wherein:
- The bubble-diverter bow is designed for low drag in the vessel speed range of 9 knots to 12 knots.
- The plurality of variants is introduced by controlling the wetted surface of the hull and the total volume of displacement of the hull to maintain a favorable constant.
- The said variants comprises an accentuated U-section shape with a controlled inflection at sections below under-water beam
- The accentuated U-shape comprises a flattened section shape.
- It further comprises a bubble mitigation at the sonar device region.
Key Features/ Value Proposition
Technical Perspective:
- The invention discloses a bubble diverter bow in a vessel (ship) for diverting bubbles arising in a path of transducer in vessel
- Designed at forward hull region (Bubble Diverter Bow) rather than tweak the appendage shape at the bottom housing the sonar transducer
- Resolves bubble sweep down below the region of sonar transducer location by effectively diverting
- The flow side-ways and not to the bottom
User Perspective:
- Capable of achieving both the desirable properties of effective bubble diversion combined with reduced resistance for the hull form .
- Useful for the design of research and naval auxiliary vessels employing bottom sonar transducers.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. ANANTHA SUBRAMANIAN V
Department of Ocean Engineering
Intellectual Property
- IITM IDF Ref. 1465
- IN471384-Granted; PCT/IN2017/050548
Technology Readiness Level
TRL-3
Experimental Proof of Concept