When EAS is corrected for density error you obtain which speed?

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Multiple Choice

When EAS is corrected for density error you obtain which speed?

Explanation:
The key idea is that dynamic pressure q = 0.5 * rho * V^2 ties airspeed to air density. Equivalent airspeed (EAS) is defined so that the dynamic pressure it represents would be produced at sea-level standard density rho0. In other words, EAS is the speed at sea-level density that produces the same q as the actual flight at density rho. From q = 0.5 * rho * TAS^2 and EAS defined by 0.5 * rho0 * EAS^2 = q, you get EAS^2 = (rho / rho0) * TAS^2. Solving for TAS gives TAS = EAS * sqrt(rho0 / rho). So, when you correct EAS for the density difference, you obtain the true airspeed. At lower density (higher altitude), TAS is greater than EAS; at sea level density, TAS equals EAS.

The key idea is that dynamic pressure q = 0.5 * rho * V^2 ties airspeed to air density. Equivalent airspeed (EAS) is defined so that the dynamic pressure it represents would be produced at sea-level standard density rho0. In other words, EAS is the speed at sea-level density that produces the same q as the actual flight at density rho.

From q = 0.5 * rho * TAS^2 and EAS defined by 0.5 * rho0 * EAS^2 = q, you get EAS^2 = (rho / rho0) * TAS^2. Solving for TAS gives TAS = EAS * sqrt(rho0 / rho). So, when you correct EAS for the density difference, you obtain the true airspeed. At lower density (higher altitude), TAS is greater than EAS; at sea level density, TAS equals EAS.

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