HUMAN physiology and the inability of the human being to remain long at high altitudes without artificial provision of oxygen or pressure, or both, are emphasized in this paper.
The author reports experience with the Boeing “Stratoliners” now in regular commercial service. Ventilation standards, he explains, have permitted bleeding a minimum of cabin air and recirculating a considerable portion of the pressurized air. Rate of pressure change, he announces, has been found of considerable importance. Even at low altitudes where pressurizing is not essential to flight comfort, he reveals that passenger comfort is increased if pressurizing is used to reduce the rate of change in air pressure while climbing or descending.
The Boeing Stratoliner pressurizing system, and the test equipment with which it was developed is described in the latter part of this paper. Mr. Cooper also explains storm distribution geographically and by normal maximum altitudes.