The dependence of the speed of sound in the Earth’s atmosphere on its density and the correction of Mach’s number

Abstract

Abstract According to the modern theory of sound, its speed in the Earth’s atmosphere depends only on temperature and does not depend on its density (height). The report shows a significant dependence of the speed of sound on the density of the atmosphere and, consequently, the requirement to adjust the Mach number, which plays an important role in determining the aerodynamic parameters of an aircraft.