The Standard Atmosphere - Virginia Tech
• Geometric altitude h G: altitude measured from sea level • Absolute altitude h a: altitude measured from center of the earth h a = h G + r , where r is the radius of the earth • Local acceleration due to gravity depends on altitude g = g 0(r/h a)2 = g 0 (r/[r+h G])2 This variation has an effect on the pressure • Geometric altitude h
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