Ground Speed
In the context of aerospace engineering, Ground Speed (GS) refers to the horizontal speed of an aircraft relative to the Earth's surface. It is a crucial parameter in flight dynamics and navigation, and it differs from airspeed, which is the speed of an aircraft relative to the surrounding air mass. Ground speed is influenced by the wind speed and direction; a tailwind increases the ground speed, while a headwind decreases it. Ground speed is used in flight planning and fuel calculation, and it is also essential for accurate navigation and flight path prediction. It is typically measured in knots (nautical miles per hour) or in kilometers per hour. Ground speed is usually determined using GPS technology or by using traditional navigation methods such as dead reckoning, which involves calculating current position based on a previously known position, estimated speed, and time elapsed.
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