From where does the MC system obtain altitude information?

From where does the MC system obtain altitude information?

• A. The barometric altimeter
• B. The electronic altimeter
• C. The radar altimeter
• D. The GPS

Answer: (B)

In the mission computer setup, altitude data the MC relies on comes from the electronic altimeter. This sensor converts ambient static pressure into a digital altitude value and feeds it directly to the computer over the aircraft’s data bus, giving the MC a precise, up-to-date altitude reading that can be used for navigation, performance calculations, and coordination with other systems. The barometric altimeter exists as the traditional cockpit instrument, but it’s typically an analog or separate digital readout and not the direct data source for the MC. A radar altimeter measures height above the terrain beneath the aircraft, which is a different reference than altitude above mean sea level. GPS can provide altitude, but it is not always the primary or most reliable source for the MC due to potential vertical errors and signal limitations. The electronic altimeter provides the integrated, digital altitude input suited for the MC’s processing needs.

In the mission computer setup, altitude data the MC relies on comes from the electronic altimeter. This sensor converts ambient static pressure into a digital altitude value and feeds it directly to the computer over the aircraft’s data bus, giving the MC a precise, up-to-date altitude reading that can be used for navigation, performance calculations, and coordination with other systems. The barometric altimeter exists as the traditional cockpit instrument, but it’s typically an analog or separate digital readout and not the direct data source for the MC. A radar altimeter measures height above the terrain beneath the aircraft, which is a different reference than altitude above mean sea level. GPS can provide altitude, but it is not always the primary or most reliable source for the MC due to potential vertical errors and signal limitations. The electronic altimeter provides the integrated, digital altitude input suited for the MC’s processing needs.