Altimeter

It shows to altitude of aircraft according to sea level.There are three different inndicator on altimeter. Lengths are different from one another. The longest range of 100 feet, 1000 feet range is medium-length arm, the short arm indicates the range of 10,000 feet. Located on altimeter barber pole seem below 10.000 feet.

Radio Altimeter

Radio Altimeter starts working below an elevation of 2,500 feet. Aircraft sends radio signals to the ground and plane calculates commute time indicates the true distance between.

Altimeter Setting

The pressure value is not standard in real life. This depends on the density of air. change of temperature changes density of air. If the temperature drops the air becomes heavy and air density increases. If we have the same pressure our aircraft altimeter indicates the same value although change in altitude. For this reason, the pressure difference occurs between regions. Although changes in temperature if aircraft fly same pressure surface aircraft doesen’t show change of altitude.

Pressure Encodings

QFE

The pressure is measured at an airport. Aircraft based on the reference point indicates the altitude. When you land to the runway altimeter indicates the “0” value of feet.

QNH

 It’s the pressure level is measured according to sea level. After landing the aircraft's altimeter will show sea level’s altitude.

QNE

In very high altitude airports, the air pressure is too low or in situations where it is impossible to set the altimeter device is entered. Altimeter standard values ​​are entered in 1013.