1. Technology: National Institute of Oceanography (N.I.O), Goa, has developed a small autonomous underwater vehicle (AUV) ‘Maya’ as a tool for scientific and commercial applications. The development was funded by N.I.O. and the Department of Information Technology, New Delhi.
Envisioned missions of the AUV include oceanographic studies, marine biology studies, water quality studies in fresh water reservoirs/dams and environmental monitoring of coastal waters & estuaries, to name a few.
The vehicle is made up of three parts. The first part is the free flooding nose cone of the vehicle which houses the scientific sensors. This nose cone is swappable and is application specific. The second part is the sealed aluminum hull which we call the Core Pressure Unit. The core pressure unit houses the batteries, electronics, vehicle sensors, actuators, communication systems and the electronics. The third part is called the tail cone and is used to house the propulsion device which is a brushless dc motor thruster. (see exploded view and photograph)
The vehicle is rated for 200m depth operations and is capable of diving to different programmed depths and maintaining control of motion at those depths. It can follow mission paths that are pre-programmed. Safety features enable the vehicle to return to the surface in case of hardware failure. The missions for the vehicle are loaded through an RF link with the aid of a GUI on the shore.
NIO signed the agreement for licensing of AUV technology with following firms.
2. Exploded view of AUV
View of AUV in water
3. Specifications of the AUV:
4. Publications and articles related to this AUV:
5. Data obtained from the AUV:
The AUV has been tested on numerous occasions for operations at sea and in freshwater reservoirs. Figures below show the data collected from the AUV missions.
Figure: Temperature Vs Depth obtained during the sea trials in the Arabian Sea
Figure: Dissolved Oxygen Vs Depth obtained in the trials at the Idduki reservoir
Figure: AUV underwater performing a mission