Flat spin

[asra]

G'day guys,Regarding a "V" or "H" style of tail, I think it was due to the blast from the prop blowing between the "V" or "H" and having little effect on the rudders abililty to counter the spin direction.Regards,ChristopherSpeaking without thinking; is like shooting without taking aim - Spanish Proverb

[asra]

Birdy & Echo, I wasn't suggesting a normally applied rotor brake, but if something had come adriftin the rotor break area and was causing a grabbing action. The subsequent loss in rpms would mean less available lift.Ted

[asra]

During a flat spin the relative air is striking the machines tail surfaces at an inclined angle, from below.Having a conventional tail with a low, or bottom mounted H.S. could restrict the effect of rudder control in a flat spin.You could find, that the H.S may sheild some, or all airflow to your rudder and fin.This is the reason "T" tails have been successfully employed in many aircraft.This configuration aids spin recovery. Having the rudder petrude beyond the H.S also helps, or having the fin forward of the H.S does to.I feel the T tail is best as both surfaces (on one side) are in that direct airflow.Image Insert: 49.43

[NiqueNaque]

Sam,How is it that most Aerobatic Aircraft don't have a T tail?Eg, Pitts Special, 300 Extra.Why is it so?Nick.

[asra]

Hi Nick.Having a T tail on a conventional aircraft means placing the H.S outside the propeller airflow, thus effecting some respons, specialy in the case of aerobatics.Another dissadvantage of a T tail is if the aircraft is poorly designed, then having a T tail during a high A of A stall, means the stalled turbulant air coming off your wings could be flowing directly over your high H.S.What this means is when the pilot pushes his controls forward to recover from this condition, nothing will happen.In order to recover from this, he must apply power. Were as a low H.S would be placed below the stalled air coming off the wings.This is not a problem with Gyro's as there are no wings and the full advantages of a T tail are gained.Hope this helps !!!Regards Sam

[asra]

p.sThe Dragonfly has finaly flown, and flies better than expected!!!!!!Image Insert: 83.91 KBImage Insert: 85.09

[Greg Mitchell]

Congrats Sam,Dragonfly is a fine looking gyro. I heard about your first solo flight a while back. Well done Mate. Enjoy.Cheers,Mitch.www.thebutterflyllc.com