Unmanned Evaluation of the U.S. Navy MK 15 and a Modified MK 15 (MK 15 1/2) Closed Circuit UBA (Underwater Breathing Apparatus)

Abstract

The Navy Experimental Diving Unit (NEDU) performed unmanned testing on a U.S. Navy MK 15 and modified MK 15 closed-circuit (C/C) underwater breathing apparatus (UBA) using a hyperbaric breathing simulator. The purpose of these tests was twofold: (1) to evaluate breathing resistance/breathing work characteristics of the MK 15 and modified MK 15 UBAs using a variety of mouthpiece and hose configurations and (2) to evaluate carbon dioxide (C02) absorbent canister duration for the modified MK 15 UBA at a depth of 50 feet-of- seawater (FSW) in a wide range of water temperatures. Breathing resistance/ breathing work studies were made using five different mouthpiece and hose configurations at depths to 150 FSW at simulated work rates ranging from light to extreme. C02 canister duration tests were conducted in water temperatures ranging from 29 to 90 F. The modified MK 15 UBA (MK 15 1/2) was equipped with the following changes effecting rig performance: (1) a MK 16 UBA center section providing increased scrubber capacity and better thermal protection and (2) the Rexnord prototype mouthpiece with the larger diameter MK 16 hoses.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1984
Accession Number
ADA146743

Entities

People

  • J. S. Keith

Organizations

  • United States Navy Experimental Diving Unit

Tags

Communities of Interest

  • Autonomy

DTIC Thesaurus Topics

  • Breathing Apparatus
  • Chambers
  • Cold Water
  • Detectors
  • Diameters
  • Electrical Equipment
  • Electronics
  • Gases
  • High Pressure
  • Materials
  • Pressure Transducers
  • Resistance
  • Standards
  • Test Equipment
  • Thermal Insulation
  • Transducers
  • Underwater Breathing Apparatus

Readers

  • Materials Science

Technology Areas

  • Autonomy