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The airspeed polars corresponding to a given gross weight are determined using:
suits are reduced lo sea level to provide the airspeed polar of the aircraft being tested.
In this case, the airspeed polar is of Ihe greatest interest.
The airspeed polar, however, varies with the wing loading and can be calculated from the drag polar.
In order to provide a uniform basis for comparison, the Idafiieg airspeed polars are always presented for a wing loading based on empty mass plus 90 kg (180 kg for multiplace sailplanes).
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