by Flying Mouse » Fri Aug 14, 2009 1:36 am
Well for starters if you started your flying (Sim) career where it should have (Cessna 152/172) you would understand the difference between IAS and TAS.
TAS, True Air Speed, is the speed you would move forward at if your were on the ground.
IAS, Indicated Air Speed, the atmosphere consists of layers, these layers have various density levels. The higher you fly the lesser the density.
That means the dense air moving through the pitot tube is less high in the air then low on the ground.
Which means your speed indicator tells you, you are flying 325 knots IAS but your TAS is well above that, therefor you get the overspeed warning.
As for the time issue. Using real weather could result in weather patterns like head-winds causing one flight to be slower then the other.
You must also understand, with big birds your time planned to climb and decent adds to the total flight plan.
Some ppl climb at full throttle, all aircraft must be set in certain configs. in all parts of the flight pattern.
The cargo plane likely takes much quicker to climb in the prescribed confiq. and can level off quicker and adjust to cruise speed then that of a heavy.
Many factors to be taken into consideration.
Mouse
Last edited by
Flying Mouse on Fri Aug 14, 2009 1:42 am, edited 1 time in total.
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