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4 results for “airspeed”

Formulae (4)

TAS \approx IAS + (IAS \times 0.02 \times \tfrac{alt}{1000})

Quick estimate: true airspeed increases about 2% per 1000 ft of altitude above indicated airspeed.

GS = TAS \pm W

Ground speed is true airspeed adjusted for the headwind/tailwind component.

M = \dfrac{v}{a}

Ratio of true airspeed to the local speed of sound.

TAS \approx IAS\left(1 + \frac{h}{60000}\right)

Airspeed corrected for altitude.