Accession Number : ADA265362


Title :   Comparison of Portable Crewmember Protective Breathing Equipment (CPBE) Designs


Corporate Author : FEDERAL AVIATION ADMINISTRATION WASHINGTON DC OFFICE OF AVIATION MEDICINE


Personal Author(s) : WilcoxJr , Bruce, ; McLean, Garnet ; England, Jr, Harvey,


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a265362.pdf


Report Date : Apr 1993


Pagination or Media Count : 12


Abstract : CPBE presently certified for transport category aircraft employ 3 types of oxygen production systems: chlorate candle, potassium superoxide, and compressed oxygen. CPBE performance was evaluated to expose significant differences based on this distinction. CPBE tests employing humans were conducted in accordance with FAA Technical Standard Order C-116. All CPBE were tested for oxygen production, carbon dioxide concentration, internal temperature, moisture, and breathing resistance for 15 minutes at ground level (1,300 ft) and cabin altitude (8,000 ft), while subjects exercised. All CPBE produced a mean oxygen level of at least 59% and maintained carbon dioxide level below 5% at ground level. Differences in internal temperature and humidity were found. Performance at altitude generally paralleled these findings. Oxygen and carbon dioxide levels provide little discrimination about the relative merits of particular CPBE. However, differences in the wearability of CPBE, based on internal temperature, humidity, and weight, were dependent on the type of CPBE oxygen production system.


Descriptors :   *OXYGEN , *RESPIRATION , *BREATHING APPARATUS , *EXHALATION , *INHALATION , TEST AND EVALUATION , MILITARY OPERATIONS , PORTABLE EQUIPMENT , TEMPERATURE , CREWS , PRESSURE , STANDARDS , CARBON DIOXIDE , SUPEROXIDES , AIR RESISTANCE , CHLORATES , POTASSIUM , SEALS(STOPPERS) , ALTITUDE , MOISTURE , DISCRIMINATION , CONCENTRATION(COMPOSITION) , WEIGHT , MILITARY PERSONNEL , AIRCRAFT , PERFORMANCE TESTS , COMPARISON


Subject Categories : Personnel Management and Labor Relations
      Protective Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE