Standard sea-level conditions (SSL),Stephen Corda, Introduction to Aerospace Engineering with a Flight Test Perspective, John Wiley & Sons, 2017. also known as sea-level standard (SLS), defines a set of atmospheric conditions for physical calculations. The term "standard sea level" is used to indicate that values of properties are to be taken to be the same as those standard at sea level, and is done to define values for use in general calculations.
Atmospheric properties At SSL some atmospheric properties are:Aerodynamics, aeronautics, and flight mechanics by Barnes Warnock McCormick Edition: illustrated Published by Wiley, 1979 Original from the University of Michigan Digitized Dec 14, 2007 , 978-0-471-03032-4 652 pages
Pressure, P = 101.325 kPa ⇔ 2116.2 lbf/ft2 ⇔ 14.696 lbf/in2 ⇔ 760 mmHg ⇔ 29.92 inHg Density, = 1.225 kg/m3 ⇔ 0.002377 slug/ft3 Temperature, T = 15 °C ⇔ 59 °F ⇔ 288.15 K ⇔ 518.67 °R Gas constant of air, Rair = 287.057 J/(kg·K) ⇔ 1716.59 ft·lb/sl·°R) Specific Weight, = 12.014 N/m3 ⇔ 0.07647 lbf/ft3 Dynamic viscosity, = 1.789×10−5 Pa·s ⇔ 3.737×10−7 slug/(s·ft) Acceleration of gravity, g0 = 9.807 m/s2 ⇔ 32.174 ft/s2
See also Sea level Sea level rise Standard temperature and pressure U.S. Standard Atmosphere
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