Quote:
Originally Posted by B767Driver  The basic reason this occurs (TAS decreasing, given a constant mach number) is that above FL 270 the density of the air falls off much faster than the temperature decreases. So even though the MN is constant...the TAS is dropping off. (As stated above...think less thrust produced.) |
B767Driver I'm a little confused. We know that:
1. As the air thins out you get a higher TAS for any given CAS.
2. As temperature decreases your TAS decreases for any given MN.
If #1 happens to a greater degree than #2, shouldn't there be a net INCREASE in TAS if MN is held constant?