Unmanned Evaluation of U.S. Navy MK 11 Semi-Closed Circuit Mixed Gas UBA

Abstract

NEDU performed unmanned tests on the MK 11 UBA incorporating Field Change Number 979A (modified canister configuration containing a heated central core and Koegel check valves in the M-11 mask). Breathing resistance and canister duration were evaluated at depths ranging from 250 to 750 fsw. Results showed breathing resistance to be significantly improved over previous designs and capable of supporting heavy work at depths to 650 fsw. Canister durations were improved to 450 fsw; however, most of this improvement was lost at 650 fsw in water below 40 deg F.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1980
Accession Number
ADA088304

Entities

People

  • James R. Middleton

Organizations

  • United States Navy Experimental Diving Unit

Tags

Communities of Interest

  • Autonomy

DTIC Thesaurus Topics

  • Canisters
  • Check Valves
  • Cooling
  • Divers
  • Diving
  • Explosive Ordnance Disposal
  • Gases
  • Hot Water
  • Humidity
  • Machines
  • Plastic Explosives
  • Pressure Regulators
  • Pressure Transducers
  • Resistance
  • Respiration
  • Test And Evaluation
  • Test Equipment

Readers

  • Aerospace Test and Evaluation
  • Mathematics or Statistics
  • Underwater engineering and Marine Technology.

Technology Areas

  • Autonomy