Good question Monty but I don't know. Only looked at it down low on
hot days. I'l try the following experiment next time I fly:
Set fuel burn at a constant value (for roughly the same BTU rejection in
both cases). Measure delta T at 1000 ft then at 8000 ft. Airspeed
should also be similar. Do you think IAS or TAS should be the
target?
Tracy
----- Original Message -----
Sent: Tuesday, December 20, 2005 8:36
PM
Subject: [FlyRotary] Tracy, Ed, delta
T
Tracy and Ed,
I was looking at an earlier post where Tracy
listed air delta T across his evap cores in cruise as 70-80F. How much
increase in DeltaT do you see with altitude? I would assume it would increase
since the air is both colder, and thinner. A 10 deg deltaT change makes a
substantial difference when sizing an intake.
Monty