If True Airspeed is 470 knots, what is the Equivalent Air speed?
- 662 knots
- 550 knots
- 278 knots
Explanation
Equivalent airspeed is true airspeed corrected for the lower air density at altitude, EAS = TAS times the square root of the density ratio. At the high cruising altitude implied here the density ratio is small, so a true airspeed of 470 knots reduces to about 278 knots EAS; the higher figures would imply density greater than sea level, which is impossible.
Ptarbin asking:
Is there a formula for this?
Community Comments (1)
S
SilkiS Posts: 4 10.09.2018 / 10:41
In general its EAS=TAS x square root of true air density/sea air density.
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