Explain the function of ground speed indicators in the CRJ?

The function of ground speed indicators in the CRJ is to show the speed of the aircraft relative to the ground. This is crucial for various aspects of flight management, including navigation and performance calculations. Ground speed takes into account the effects of wind—meaning it reflects not just the aircraft's speed through the air but also how that speed translates to displacement over the Earth's surface.

Ground speed is particularly important during phases of flight such as takeoff, landing, and taxiing where precise positioning and timing are vital to ensure safety and efficiency. Knowing the ground speed allows pilots to make informed decisions about approach angles, landing distance requirements, and fuel consumption calculations, thus ensuring optimal performance during the flight.

Understanding ground speed is essential for communication with air traffic control and during navigation, especially in busy airspace where precise tracking is necessary. The other options, while related to flight metrics, do not describe the specific functionality of ground speed indicators accurately.