27.Indigenous AUV’s Get Thumbs Up

(Published in Indian Military Review, Oct 2013)

Excerpts from the article:-
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Indian Navy currently employs Hugins AUV manufactured by Kongsberg Maritime for deep water survey purposes. These AUVs operate with the Catamaran type survey vessels procured from Alcock Ashdown Limited.
The AUV is able to meet the demand of deepwater geophysical survey and to improve data resolution in the event of undiluted seafloor condition, especially in deepwater area. Using AUV in deepwater survey will save enormous turning time compared to the traditional method (Towed System). In addition, it will also reduce operational expenditure by removing the need for a second vessel.

Apart from the DRDO a good deal of research is going on in development of AUVs in India. Researchers at Central Mechanical Engineering Research Institute (CMERI) under the Council of Scientific and Industrial Research (CSIR) – had developed India’s first indigenous AUV-150.
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The mega system can fulfil tasks such as seafloor mapping, coastal surveillance, mine countermeasure, and oceanographic measurements during adverse weather conditions. The prototype weighs 490 kg, is 4.8 metres long and has a diameter of just 50 cm. It packs a wide array of equipment into its frame — depth sensor, altimeter, sonar and GPS and payload sensors — apart from a hybrid communication system that uses radio waves while on the surface and acoustic underwater. The remote controlled vehicle uses a Lithium polymer battery and can operate up to depths of 150 metres at speeds of 2-4 knots.

Complete article can be accessed at:-

Kulshrestha articles in IMR Oct 2013

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26. Navy Completes Technical Evaluation of DSRV’s

(Published in Indian Military Review, Oct 2013.)

 

Excerpts from the published article:-
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Free escape from a submarine by the crew is feasible up to a depth of ~60 meters, and up to a depth of ~185 meters with specially designed escape suits. The US Steinke Hood developed in 1962, comprised of life jacket attached to a plastic facemask. This permitted breathing of air trapped in the hood by the escapee. Admiralty developed the Submarine Escape Immersion Ensemble (SEIE), which in addition to the Steinke Hood type mask covered the crewmember completely to provide thermal protection. In addition, it had a single man life raft in built in to the suit that permitted linking up with other life rafts upon surfacing. Some submarines have an inbuilt rescue sphere in to which the crew retreats; the crew ejects the sphere from the submarine thereafter.
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Currently the Indian Navy uses the escape suits and the rescue bell system from the diving tender INS Neerekshak. Its Shishumar class submarines are fitted with the rescue sphere. Indian Navy’s efforts to procure two of its own DSRVs have not been successful yet. In the interim, Indian Navy has signed a contract with the US for the ‘global submarine rescue fly-away kit’. This would enable transportation of the rescue system within 72 hours to the nearest rescue port and permit rescue of at least eight personnel at a time. The maintenance and operation of this system, as well as other US submarine rescue systems is being done by M/s Phoenix International via a Government Owned, Contractor Operated/Maintained (GOCO/CM) arrangement, The Indian Navy and the US Navy (Undersea rescue command) have been undertaking joint submarine rescue exercises, the most recent one was INDIAEX-2012. Indian Navy had floated a RFI for DSRVs in Dec 2010. It has also raised an RFI for a single Submarine Rescue Bell System, as recently as September this year, in fact about a week prior to the Sindhurakshak accident.

Compltete article can be accessed at:-

http://skulshrestha.com/376Kulshrestha articles in IMR Oct 2013
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26 B. Raising QA Concerns as Nanotech Products Permeate Society

I delivered a poster presentation at Asia Network for Quality Congress 2013 ( ANQ 2013) at Bangkok from 16 Oct to 17 Oct 2013.
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It was a great experience to interact with representatives of 17 countries and hear their view points. The poster can be accessed by clicking the link below.

ANQ 2013-Bangkok-
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