When evaluating navigational systems, what is the main function of DME?

When evaluating navigational systems, what is the main function of DME?

• A. To assist with flight planning
• B. To gauge altitude
• C. To calculate distance from ground stations
• D. To monitor fuel consumption

Answer: (C)

The primary function of Distance Measuring Equipment (DME) is to calculate the distance from the aircraft to a ground station. DME operates by sending a signal from the aircraft to the DME ground station and then measuring the time taken for the signal to return. This time interval is then converted into a distance reading, providing the pilot with an accurate understanding of how far away they are from the ground facility. Understanding distance in relation to navigational aids is critical for pilots, as it helps with navigation and approach procedures. Thus, DME is an essential tool in maintaining situational awareness and ensuring accurate navigation during flight. Other functions listed, such as flight planning, altitude gauging, and fuel consumption monitoring, are important in their own right, but they do not pertain to DME's specific capability.

The primary function of Distance Measuring Equipment (DME) is to calculate the distance from the aircraft to a ground station. DME operates by sending a signal from the aircraft to the DME ground station and then measuring the time taken for the signal to return. This time interval is then converted into a distance reading, providing the pilot with an accurate understanding of how far away they are from the ground facility.

Understanding distance in relation to navigational aids is critical for pilots, as it helps with navigation and approach procedures. Thus, DME is an essential tool in maintaining situational awareness and ensuring accurate navigation during flight. Other functions listed, such as flight planning, altitude gauging, and fuel consumption monitoring, are important in their own right, but they do not pertain to DME's specific capability.