Testing of Decompression Algorithms for Use in the U.S. Navy Underwater Decompression Computer

摘要: Abstract : Results of the second phase man-testing a computer algorithm for computing decompression profiles breathing 0.7 ATA oxygen in nitrogen are presented. This is primarily use with MK 15 or 16 closed circuit UBA. Phase II testing was designed to lengthen no-decompression limits established previously reported I and gain more experience 100-150 FSW depth range. Some 228 man dives resulting 11 cases Type sickness were conducted. During course testing, model had be changed. Initially, used (exponential gas uptake offgassing, 9 tissues ranging from 5 min 240 halftime), but showed this predicted inadequate repetitive dives. The modified so exponential elimination linear. linear offgassing modeled instantaneous diffusion well-mixed compartment. Three different sets ascent criteria tested using model. final set produced an acceptable expected maximum incidence less than 3.5% assuming that occurrence followed binomal distribution at 95% confidence leVel. report gives complete details derivation as well detailed flow charts all algorithms. All test presented along descriptions sickness.