Accession Number:

ADA088304

Title:

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

Descriptive Note:

Test rept. Jun-Sep 1979

Corporate Author:

NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL

Personal Author(s):

Report Date:

1980-06-01

Pagination or Media Count:

34.0

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.

Subject Categories:

  • Life Support Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE