Standard sea-level conditions

Standard sea-level conditions (SSL),^[1] 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.

P = 101.325 kPa ⇔ 2116.2 lb_f/ft² ⇔ 14.696 lb_f/in² ⇔ 760 mmHg ⇔ 29.92 inHg

Pressure

$\rho$ = 1.225 kg/m³ ⇔ 0.002377 slug/ft³

Density

T = 15 °C ⇔ 59 °F ⇔ 288.15 K ⇔ 518.67 °R

Temperature

of air, R_air = 287.057 J/(kg·K) ⇔ 1716.59 ft·lb/sl·°R)

Gas constant

$\gamma$ = 12.014 N/m³ ⇔ 0.07647 lb_f/ft³

Specific Weight

$\mu$ = 1.789×10⁻⁵ Pa·s ⇔ 3.737×10⁻⁷ slug/(s·ft)

Dynamic viscosity

g₀ = 9.807 m/s² ⇔ 32.174 ft/s²

Acceleration of gravity

At SSL some atmospheric properties are:^[2]

^[3]

Standard sea-level conditions

Pressure

Density

Temperature

Gas constant

Specific Weight

Dynamic viscosity

Acceleration of gravity

Sea level

Sea level rise

Standard temperature and pressure

U.S. Standard Atmosphere