Thread: Lance vx. 6/300
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  #16  
Old September 10th 03, 04:19 AM
CarSalesman
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absolute bull****....

"Renzoni Papaloni" wrote in message
om...
It loses elevator control in slow flight with high angles of attack, not

at
take off.


Obviously, you've never flown one of these things. If your statement were
true, it would be impossible to stall the plane. Elevator control is just
fine
in all phases of slow flight, landing configuration stalls, and accelerated
stalls - exactly as required for FAA certification. Also exactly as any
pilot is trained when checked out on a new type.


Then the tail comes down and gets no air because it is in the
horizontal axis right behind the main wings.


Now, you're really showing your innocence. The stabilator does
*not* hold the back of the airplane up, it holds it *down*. If you
really lost elevator control for the reason described, the airplane would
pitch down, not up.



That makes the tail less
effective, because the airflow it gets is partly deflected by the high

angle
of attack of the main wing and the airflow does not even reach the tail

and
is also turbulent. The use of flaps makes this even more pronounced! A
straight tail in comparison would be way lower in totally undisturbed
airflow and more effective in this kind of flight envelope.


You better go look at one of these things on the ramp. If you were to
get the nose so high, that the T-tail stabilator were totally behind the
main wing, you'd have an angle of attack of about 30 to 40 degrees,
which is about 3 times greater than the stall. The condition you
describe is impossible. You'd be in a spin long before you reached
that angle of attack.



This happens
when you have to ad power to fly slower, it's called getting behind the
power curve. This does NOT happen when you take off.


I hope you're not an active pilot. Do you really think that getting behind
the power curve is limited to the tail design of the plane? You can get
behind
the power curve in any airplane, especially any piston airplane. You need
to get some training on that phase of flight, soon.


Other airplanes don't have the same problem because of their different
geometry. (Longer fuselage and higher or lower t-tail.)
It really has nothing to do with 'well trained pilots'. If you were well
trained you would know that! Maybe you should find somebody who can draw

you
a picture. No offense...


Better look at your own picture. With a much longer fuselage, the angle of
attack required to get the T-tail down behind the main wing, is reduced.

don