Remove Indicated Airspeed Remove Payload Remove True Airspeed
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Classic Theory Meets Digital Computer; Status Quo Emerges Unscathed

Flying Magazine

Operators of airplanes used for commercial transport of people or cargo prefer pound-miles per gallon, but for personal airplanes with randomly varying payloads mpg is a satisfactory yardstick for efficiency. These are indicated, not true, airspeeds.) Again, these are indicated airspeeds.