NDLI: A combination air deceleration and mooring module for A-sized buoys

Content Provider	IEEE Xplore Digital Library
Author	Driscoll, F.R. Venezia, W. Curic, D. Pantelakis, T.
Copyright Year	2002
Description	Author affiliation: Dept. of Ocean Eng., Florida Atlantic Univ., Dania Beach, FL, USA (Driscoll, F.R.)
Abstract	The A-sized standard is adopted for many buoys used in ocean monitoring that are deployed from aircraft, helicopters, ships and submarines using pressure and gravity launch tubes, as well as charge-activated devices (CAD). Unfortunately, most existing A-sized systems are drifting buoys and acquiring relatively long term measurements from a fixed location in littoral waters is difficult because currents tend to move these drifting buoys on shore or out of the region of active interest. A novel air brake and mooring module is presented in this paper that provides a reliable air deployment and autonomous mooring capability for A-sized systems. The module consists of a combined air brake/anchor and an autonomous scope adjusting mooring line spool. In air, the combined air brake/anchor is rigidly attached to the sensor package to eliminate parachute entanglement. In water, the air brake/anchor is released and moors the system in bottom types ranging from mud and sand to broken rock. The mooring module supports different mooring lines, including embedded conductors, and self-locks the mooring line at preprogrammed scopes in depths ranging between 20 and 200 m. The electronic components are low power and potted to eliminate leaks. A structural finite element model is used to design the high strength lightweight anchor and the size of the mooring module and buoy are minimized using a finite element numerical simulation. The final package is small, consuming 1/3 of the available space, and its volume is equivalent to the combined space utilized by existing parachutes and sensor suspension and communication lines.
Starting Page	433
Ending Page	440
File Size	758803
Page Count	8
File Format	PDF
ISBN	0780375343
DOI	10.1109/OCEANS.2002.1193310
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Packaging Finite element methods Oceans Monitoring Aircraft Helicopters Marine vehicles Underwater vehicles Gravity Current measurement
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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