Chapter 2: Air, Atmosphere and Airspeed

Question 1

IAS

Answer 1

Indicated Air Speed
Difference between Pitot tube (Pt) and Static port (Ps)
(IAS)^2 α q

Question 2

IAS to TAS

Answer 2

IAS - indicated air speed (instrument)
correct instrument / position / pressure error
CAS - calibrated air speed
correct for compressibility
EAS - equivalent air speed
correct for density
TAS - true air speed

MSL -> IAS ~= CAS ~= EAS

Question 3

TAS equation

TAS relation to IAS

Answer 3

TAS = EAS sqrt (rho/rho_0)

TAS < IAS (99% of cases)