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In aviation and aviation meteorology, a flight level (FL) is an aircraft's altitude at standard air pressure, expressed in hundreds of feet. The air pressure is computed assuming an International Standard Atmosphere pressure of 1013.25 hPa (29.92 inHg ) at sea level , and therefore is not necessarily the same as the aircraft's actual altitude ...
25 sty 2024 · A flight level (FL) is a standard pressure altitude, expressed as three numbers. Aircraft flying on flight levels all measure their altitude from the same pressure setting, 1013.2 Hpa (or 29.92 InHg). This is based on the principle of something called the International Standard Atmosphere.
Altitude above sea-level in 100 feet units measured according to a standard atmosphere. Strictly speaking a flight level is an indication of pressure, not of altitude.
4 dni temu · To calculate the air pressure at a certain altitude, use this simple formula: P = P0 × exp(-g × M × (h - h0)/(R × T) where: P0 and h0 — The pressure and altitude of the reference point. Often, these values correspond to the ones at sea level. P — The pressure at altitude h. T — The temperature at altitude h.
The altitude at a given air pressure can be calculated using Equation 1 for an altitude up to 11 km (36,090 feet). This equation can be arranged to also calculate the air pressure at a given altitude as shown in Equation 2.
To calculate pressure altitude, you need to know the current altimeter setting and the local barometric pressure. Our pressure altitude calculator takes all the guesswork out of this calculation, providing you with results in seconds.
In order to separate air traffic and prevent collisions, aircraft in cruise flight fly at common pressure levels known as flight levels (abbreviated to FL). The flight levels correspond to the altitude in 100-ft increments (hectofeet) above the pressure surface of 1,013.25 hPa calculated according to the standard atmosphere.
