Air Independent Propulsion system for Indian Naval Submarines

Question: Naval Materials Research Laboratory (NMRL) is an Indian defence laboratory of the Defence Research and Development Organisation (DRDO) located in?
(a) Kerala
(b) Karnataka
(c) Maharashtra
(d) Andhra Pradesh
Answer: (c)
Related facts:

  • On 30th October, 2019; Chief of the Naval Staff Admiral Karambir Singh witnessed Operation of the land-based prototype engineered to the form-and-fit of a submarine.
  • This was a part of Defence Research and Development Organisation (DRDO)’s programme to build a fuel cell-based Air Independent Propulsion (AIP) system for Indian Naval Submarines.
  • This operation was performed at the Naval Materials Research Laboratory in Ambernath, Maharashtra.
  • Secretary, Department of Defence R&D and Chairman DRDO Dr G. Satheesh Reddy were also present on the occasion.
  • Air Independent Propulsion (AIP) has a force multiplier effect on lethality of a diesel electric submarine as it enhances the submerged endurance of the boat, several folds.
  • Fuel cell-based AIP has merits in performance compared to other technologies.
  • The DRDO Chairman assured that all efforts will be made to meet the performance standards and timelines of the programme.
  • He also said that induction of DRDO AIP into operational Submarines could be achieved as per Indian Navy schedule.


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