2 results about "Pressure altitude" patented technology

Pressure altitude is the altitude in the International Standard Atmosphere (ISA) with the same atmospheric pressure as that of the part of the atmosphere in question. The National Oceanic and Atmospheric Administration (NOAA) published the following formula for directly converting atmospheric pressure in millibars (mb) to pressure altitude in feet (ft): 145366.45[1-((Station pressure in millibars)/1013.25)⁰·¹⁹⁰²⁸⁴].