![]() The speed of sound in undisturbed air is a function only of temperature and not altitude. Kinematic - Vicosity is a fluid's resistance to flow and can be valued as dynamic (absolute) or kinematic. The Mach number is the ratio of the True Airspeed to the sonic speed. Altitude - Properties of the US standard atmosphere ranging -5000 to 250000 ft altitude. Temperature - Introduction to temperature - including Celsius, Fahrenheit, Kelvin and Rankine definitions - and an online temperature converter. ![]() STP - Standard Temperature and Pressure and NTP - Normal Temperature and Pressure - The definition of STP - Standard Temperature and Pressure and NTP - Normal Temperature and Pressure.Speed of Sound Equations - Calculate the speed of sound (the sonic velocity) in gases, fluids or solids.Pressure - Introduction to pressure - online pressure units converter.Elevation - Temperature, Pressure and Speed of Sound - Altitude and speed of sound, temperature and pressure.Specific Weight and Specific Gravity - An introduction to density, specific weight and specific gravity. Conductive Heat Transfer - Conductive heat transfer takes place in a solid if there is a temperature gradient.Barometric Pressure - Pressure in psi, psf and kPa - Convert between barometric pressure inches Hg, psi and psf.Barometer - Altitude Compensation - Elevation compensating manometer.Speed of Sound Equations - Calculate the speed of sound (the sonic velocity) in gases, fluids or solids. Pressure - Introduction to pressure - online pressure units converter. Altitude - Elevation above sea level and air temperature, pressure and density. Elevation - Temperature, Pressure and Speed of Sound - Altitude and speed of sound, temperature and pressure. Air Temperature, Pressure and Density vs. The speed of sound in air (or in other gases) can be expressed as c (k p / )1/2 (k R T)1/2 (1) where c speed of sound (m/s, ft/s) k ratio of specific heats (adiabatic index, isentropic expansion factor) p pressure (Pa, psi) R 286.Pressure at Constant Temperature - Figures and tables with isobaric (Cp) and isochoric (Cv) specific heat of air at constant temperature and pressure ranging 0.01 to 10000 bara. Miscellaneous - Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.
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