Once above the transition altitude, the altimeter is set to the international standard atmosphere ( ISA ) pressure at MSL which is 1013.25 hPa or 29.92 inHg.
12.
The pressure altitude system in an approved recorder has the same function as a barograph and must be calibrated to the ICAO ISA ( International Civil Aviation Organisation International Standard Atmosphere ).
13.
The IAS is not the actual speed through the air even when the aircraft is at sea level under International Standard Atmosphere conditions ( 15 �C, 1013 CAS ( Calibrated Airspeed ).
14.
ICAO defines an International Standard Atmosphere ( also known as ICAO Standard Atmosphere ), a model of the standard variation of pressure, temperature, density, and viscosity with altitude in the Earth's atmosphere.
15.
When flying at sea level under International Standard Atmosphere conditions ( 15 �C, 1013 hPa, 0 % humidity ) calibrated airspeed is the same as equivalent airspeed ( EAS ) and true airspeed ( TAS ).
16.
The nominal net thrust quoted for a jet engine usually refers to the Sea Level Static ( SLS ) condition, either for the International Standard Atmosphere ( ISA ) or a hot day condition ( e . g.
17.
Because the temperature of the atmosphere generally decreases with altitude ( until the tropopause ), the speed of sound also decreases with altitude . ( See the International Standard Atmosphere for more on temperature as a function of altitude .)
18.
The ICAO defines the International Standard Atmosphere ( also known as ICAO Standard Atmosphere ), which is the model of the standard variation of pressure, temperature, density, and viscosity with elevation / altitude in the Earth's atmosphere.
19.
In contrast the LM-105 designer Lutz M�ller originally calculated an optimistic G1 BC of H " 0.93 and a supersonic range of H " at a muzzle velocity of under International Standard Atmosphere sea level conditions ( air density ? = 1.225 kg / m 3 ).
20.
If M�ller's design assumptions are correct the LM-107 projectile with a calculated G1 BC of 1.02 will offer a supersonic range of H " at a muzzle velocity of under International Standard Atmosphere sea level conditions ( air density ? = 1.225 kg / m 3 ).
