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{{short description|Autonomous underwater vehicle from National Institute of Oceanography, India}}
{{Infobox robot
| name = Maya AUV
| logo =
| image = Maya AUV in a pool at NIO.jpg
| caption =Maya AUV at National Institute of Oceanography, Dona Paula, Goa, India
| developed by = [[National Institute of Oceanography, India]]
| manufacturer = [[National Institute of Oceanography, India]]
| country = India
| year_of_creation = 2003-2007
| price =
| type = [[Autonomous underwater vehicle]]
| purpose = [[Chemical Oceanography]], [[Biological Oceanography]], [[Oceanography]], and [[Data collection]]
| derived_from =
| replaced_by =
| current_supplier =
| last_production =
| website = {{url|www.nio.org}}
}}

'''Maya AUV''' is an [[autonomous underwater vehicle]] ([[AUV]]), developed by the Marine Instrumentation Division at the [[National Institute of Oceanography, India|National Institute of Oceanography]] (NIO), India.

==Description==

The Maya AUV belongs to a class of small [[autonomous underwater vehicle]]s<ref>{{Cite web| url=http://www.iisc.ernet.in/~currsci/may102006/1202.pdf | title=Potential of autonomous underwater vehicles as new generation ocean data platforms | access-date=2015-07-19 | archive-date=2015-07-22 | archive-url=https://web.archive.org/web/20150722172444/http://www.iisc.ernet.in/~currsci/may102006/1202.pdf | url-status=dead}}</ref> that have been gaining popularity in marine application areas such as [[oceanography]], monitoring the coastal environment, as well as in naval applications such as mapping of [[naval mine]]s for mine countermeasures.

The vehicle has an endurance of 7.2 hours,<ref>{{cite web|url=http://auvac.org/configurations/view/139|title=Maya - AUVAC|author=|date=|work=auvac.org}}</ref> a total length of approximately 1.7 m, a diameter of 0.234 m with a slender-ellipsoid nose that is free-flooding and houses scientific payloads.<ref>{{Cite web| url=http://welcome.isr.ist.utl.pt/img/pdfs/1532_c5.pdf | title=Mechanical design and development aspects of a small AUV – MAYA | access-date=2015-07-19 | archive-date=2008-10-31 | archive-url=https://web.archive.org/web/20081031154344/http://welcome.isr.ist.utl.pt/img/pdfs/1532_C5.pdf | url-status=dead}}</ref> The nose-cone is designed to be swappable to use alternate scientific sensors depending upon the application. The main pressurized hull of the AUV is rated to 200m depth operations and houses the electronics, navigation sensors, batteries as well as the actuators for the rudders and fins. The AUV is propelled by a single rear thruster in the aft section which also houses a mast for the GPS and communication antennae. Navigation sensors include a [[Doppler Velocity Log]] and a MEMS [[Inertial Measurement Unit]]. The vehicle weighs approximately 54 kg in air, with the main hull built from an aluminum alloy. It is powered by lithium polymer batteries and has a nominal speed of 1.5 m/s.<ref>{{Cite web| title=Mechanical design and development aspects of a small AUV – Maya | url=http://users.isr.ist.utl.pt/~antonio/INDIA/Mech_extended_abs03.pdf | archive-url=https://web.archive.org/web/20150722062405/http://users.isr.ist.utl.pt/~antonio/INDIA/Mech_extended_abs03.pdf | archive-date=2015-07-22}}</ref>

==Development==
The development of Maya was jointly funded by NIO and the [[Department of Electronics and Information Technology]], New Delhi, India (known as the Department of Information Technology before 2012). The AUV's development began in 2003,<ref>{{Cite web| url=http://robotics.usc.edu/~ampereir/Files/draftminutes-PRSG2.pdf | title=Minutes of the second meeting of the Project Review & Steering Group (PRSG) | date=2004-12-20 | access-date=2015-07-21 | archive-date=2017-12-28 | archive-url=https://web.archive.org/web/20171228112211/http://robotics.usc.edu/~ampereir/Files/draftminutes-PRSG2.pdf | url-status=dead}}</ref> completed horizontal plane tests in May 2005,<ref>{{Cite web| url=http://robotics.usc.edu/~ampereir/Files/Synopsis_prsg3.pdf | title=Technical report on the small AUV project for the period ( 20 Dec 2004 to 6 May 2005 ) | access-date=2015-07-21 | archive-date=2016-03-04 | archive-url=https://web.archive.org/web/20160304085839/http://robotics.usc.edu/~ampereir/Files/Synopsis_prsg3.pdf | url-status=dead}}</ref> with the first set of dive missions tested on May 12, 2006,<ref>{{Cite web| url=http://robotics.usc.edu/~ampereir/Files/Snopsis_csir_maya.pdf | title=Technical report - Field trials of small AUV | access-date=2015-07-21 | archive-date=2016-03-04 | archive-url=https://web.archive.org/web/20160304103032/http://robotics.usc.edu/~ampereir/Files/Snopsis_csir_maya.pdf | url-status=dead}}</ref> making it India's first indigenously developed [[AUV]] for scientific applications.

Part of the Maya AUV development was done under the scope of an Indo-Portuguese collaboration that aimed to build and test the joint operation of two AUVs for marine science applications via AdI Portugal (MAYASub project). Sensors used in the Maya AUV include Aanderaa [[dissolved oxygen]] sensor, WetLabs [[chlorophyll]] and [[turbidity]] sensors, RBR [[CTD (instrument)]] and a TRIOS "hyper spectral radiometers".<ref>{{Cite web| url=http://auvac.org/uploads/configuration_spec_sheets/Maya%20AUV%20Field%20results.pdf | title=The small AUV Maya: Initial Field Results | access-date=2015-07-19 | archive-date=2015-07-22 | archive-url=https://web.archive.org/web/20150722072513/http://auvac.org/uploads/configuration_spec_sheets/Maya%20AUV%20Field%20results.pdf | url-status=dead}}</ref> The AUV uses standard LQ controllers for control in the horizontal and vertical planes.<ref>{{Cite web| url=http://welcome.isr.ist.utl.pt/img/pdfs/1531_c4.pdf | title=Control of the MAYA AUV in the vertical and horizontal planes: Theory and practical results | access-date=2015-07-19 | archive-date=2011-04-01 | archive-url=https://web.archive.org/web/20110401022312/http://welcome.isr.ist.utl.pt/img/pdfs/1531_C4.pdf | url-status=dead}}</ref> NIO signed agreements for the licensing of AUV technology with VEA Automation and Robotics in 2009 and [[Larsen & Toubro Limited|L&T]], in 2010.

==References==
<references />

[[Category:Autonomous underwater vehicles]]
[[Category:Science and technology in India]]

Maya AUV India - Revision history

MichaleYarbrough: adding a details