Explore: Ground Speed

Ground speed is the horizontal component of the velocity of an aircraft relative to the Earth’s surface, also referred to as "speed over the ground".

expressed by the aircraft's indicated airspeed (and not by, for example, the ground speed), so that pilots may use them directly, without having to apply correction

airliners also include ground speed (GS) and Machmeter. Ground speed shows the actual speed that the aircraft uses compared to the ground. This is usually connected

the world's fastest steam train Aircraft speed records are based on true airspeed, rather than ground speed. HTV-2 (artist rendering), the fastest uncrewed

held by the common swift. List of birds by flight heights Sustained ground speed for approximately nine hours with no rest on high tailwinds during an

airspeed is the speed of an aircraft relative to the air it is flying through (which itself is usually moving relative to the ground due to wind). In

Ground speed radar is a non-mechanical way of measuring the speed of a vehicle. The Speed sensor fires a radar beam towards the ground and measures the

streams, river currents, and wind speeds) are also measured in knots. Thus, speed over the ground (SOG; ground speed (GS) in aircraft) and rate of progress

fly the airplane to it. The bombsight directly measured the aircraft's ground speed and direction, which older types could only estimate with lengthy manual

target, filtering on the radial speed is a very effective way to eliminate the ground clutter that always has a null speed. Low-flying military plane with