Increasing power required with altitude.. what's a good plain english explanation?

"xerj" wrote in message
...
If you
can maintain constant power (turbo charging), you get better and
better performance with altitude.

The TAS will increase, but say you want to hold a specific angle of attack
and its attendant IAS (maybe for range), you will need more power to do
that as you get higher.


This in not true. You will need the same power for the same IAS regardless
of altitude.

Danny Deger