Читать книгу Introduction to Flight Testing - James W. Gregory - Страница 43

1 1 There have been many iterations of the U.S. Standard Atmosphere over the years. The original version was published in 1958, and as scientific understanding of the atmosphere advanced, was updated in 1962, 1966, and finally 1976. Some older versions of the standard atmosphere persist today – for example, Anderson (2016) continues to refer to a 1959 definition of the standard atmosphere from the U.S. Air Force. However, the 1976 U.S. Standard Atmosphere and the 1993 ICAO standard atmosphere are widely accepted as the appropriate standards to use today.

2 2 There are two different definitions of absolute altitude that we will use in this chapter. The first one, considered here, is for development of the standard atmosphere. The second definition is widely used in aviation as the height above ground level. We will clarify these distinctions at the end of this chapter.