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Aeronautic terminology in dribs and drabs... G as "Ground Speed"
Rome, Italy - It can also be detected by GPS
The Ground speed (GS) is the speed of an aircraft relative to the ground and it is variable in use of the wind. It is different from the IAS - Indicated Air Speed. To make the Ground Speed concept clear, it is necessary to consider that an aircraft moves inside an air mass. The air mass as a whole may be moving over the ground due to wind, and therefore some additional means to provide position...
AVIONEWS - World Aeronautical Press Agency - 1083921
AVIONEWS - World Aeronautical Press Agency
AVIONEWS - World Aeronautical Press Agency