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Thread: what do we need so many different airspeed?
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Old 2nd April 2013 | 10:35
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italia458
 
Joined: Jun 2010
Posts: 381
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From: Canada
You've only listed two speeds - TAS and GS. TAS is your speed through the air and GS is your speed over the ground.

Mach is a ratio, and the rest of those are measures of pressure.
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