THEORETICAL EVALUATION OF THE HUMAN DECOMPRESSION TOLERANCE INSIDE A PRESSERIZED HERMETIC CABIN

Abstract

The paper presents an approach to evaluating decompression tolerance with the use of a model of gas dynamics in a partitioned aircraft cabin after loss of pressure. The model takes in decompression effects on a pilot as a function of flight parameters, cabin interior structures and mode of the pressurization system operation. Mathematical simulation of decompression due to loss of cabin pressure made it possible to define time of decompression, pressure differential between compartments, amount of oxygen to be supplied, and safe altitude. The model can be instrumental to aircraft cabin designers in making a rational choice of pressurization and gas dynamics characteristics, as well as performance abilities in the event of loss of cabin pressure or evaluate risk level in specific cases to consider safety provisions.