Читать книгу Introduction to Flight Testing - James W. Gregory - Страница 39

atemperature lapse rate, dT/dhcchordggravitational accelerationggravitational acceleration at sea levelhgeopotential altitudehAabsolute altitude (height relative to the center of the Earth)hGgeometric altitude (height above mean sea level)kconstant, a/TSLmmass of air in the control volumenconstant, −g/aRppressureRgas constant for airrEarthEarth's mean radiusRecReynolds number based on chordSviscSutherland's constantTtemperatureU∞freestream velocityWweight of air in the control volumexlength of control volume elementywidth of control volume elementβconstant used in Sutherland's Lawδpressure ratio, p/pSLμdynamic viscosityνkinematic viscosityρdensityσdensity ratio, ρ/ρSLθtemperature ratio, T/TSL