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Cruise speed: Balanced Speed or CL/CD max speed?

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T

Typhoon

Active Member
Joined
Apr 21, 2011
Messages
31
Location
Germany
Hello people

I'm trying to clear my ideas, but after working on it hours and hours, I can't clear my mind now! My airplane is optimize for the Cruise stage. using XFLR5 (very good program) I obtained the performance. I have a Balanced speed in 80 m/s and CL/CD max point in v=50m/s (loiter). Well, my cruise speed must be the trim (or balance) speed? or a less one?

I don't understand that there is a lot of range between trim speed and CL/CD max speed. Is it normal? Should I choose another profile?

Thx!
 
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