On 09/24/06 11:39, Wade Hasbrouck wrote:
"Mark Hansen" wrote in message
...
On 09/24/06 11:13, Wade Hasbrouck wrote:
"B A R R Y" wrote in message
...
On Sun, 24 Sep 2006 10:18:34 -0700, "Wade Hasbrouck"
wrote:

Service Ceiling I believe is defined as "where Vx equals Vy", which
where
they meet will result in a minimal to non-existent climb rate. Vx
increases
as altitude increases, Vy decreases as altitude increases

I always thought it was where the plane was no longer capable of
climbing at a rate greater than 100 ft/min.


You are correct... I should look at Wikipedia before typing... :-)

"From Wikipedia, the free encyclopedia

In aeronautics, the service ceiling is the density altitude where the
flying
in a clean configuration, at the best rate of climb airspeed for that
altitude, and with all engines operating and producing maximum continuous
power will produce a 100 feet per minute climb. Margin to stall at
service
ceiling is 1.5g."

Will have to go back to the reference book that talked about the point
where
Vx and Vy are equal and see what they called that... :-)


It the airplane's absolute ceiling.


I was going to say that... But figured I would go look it up before "opening
my mouth" again... :-)

Hey ... this is Usenet! ;-)

--
Mark Hansen, PP-ASEL, Instrument Airplane
Cal Aggie Flying Farmers
Sacramento, CA