how come when i fly to high altitudes in my airbus 319, my overspeed needle drops?
like from 370 knots down to 240 at over 40,000 ft?????
Lower air density. The average density of dry air is about 1.225 kg/m³ at mean sea level, decreasing with altitude.
True Air Speed(in kt) = Indicated Airs Speed(in kt) + FL/2
So is you are cruising at FL400 and indicating 240kts, your true airspeed is 440kts.
thanks, thats informative! i saved a copy of that ta study a little later.
i didn't know that, gonna hafta bring up the calculator ta help me with some figures to.