Sound Level Testing of the Standard USN MK V Air and Helium-Oxygen Diving Helmets

Abstract

Nine standard USN Mark V Air Diving Helmets and two standard USN Mark V Helium-Oxygen Diving Helmets were subjected to sound level testing on two specially built acoustical manikins at the Navy Experimental Diving Unit. The sound levels existing in the helmets were found to be into the hearing damage risk levels under nearly all the conditions tested. Wide variability in the measured sound levels was found to exist from helmet to helmet. The relationship of the test results to other similar work is discussed. Several possible ways of reducing the measured sound levels are presented.

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Document Details

Document Type
Technical Report
Publication Date
Jun 08, 1973
Accession Number
AD0764528

Entities

People

  • James K. Summit
  • Stephen D. Reimers

Organizations

  • United States Navy Experimental Diving Unit

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Measurement
  • Air Flow
  • Air Supplies
  • Chambers
  • Communication Systems
  • Divers
  • Ear
  • Electronics Laboratories
  • Exhaust Valves
  • Flow Rate
  • Frequency
  • Hyperbaric Chambers
  • Measurement
  • Microphones
  • Sound Pressure
  • Standards
  • Test Sets

Fields of Study

  • Physics

Readers

  • Mathematics or Statistics
  • Military Engineering.
  • Underwater engineering and Marine Technology.