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carl(at)flyers.freeserve.
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 Posted: Fri Sep 05, 2008 8:48 am Post subject: Europa-List: Classic stall characteristics |
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I wouldnt describe the Classic stall as nasty.
If the ball is level, flaps retracted it is unlikely ther will be a wing
drop and simply lowering the nose is enough to recover. If the wing drops
use rudder (not aileron) to correct the incipient spin.
Elsewhere somebody said level the wings - this implies using aileron which
can make the spin worse.
With flaps down many classics will drop a wing but that is probably down to
the alignment of the flaps, not the difference in the wings.
Eliminating the wing drop is relatively easy - fit stall strips to make
both wings stall simultaneously.
If you are worried about the stall characteristics of the Classic get a ride
in one and check it out for yourself. It really is a non event.
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carl(at)flyers.freeserve.
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| Posted: Fri Sep 05, 2008 1:05 pm Post subject: Europa-List: Classic stall characteristics |
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There seems to be an assumption that the stall/ spin behaviour of the Europa
is somehow worse than other aircraft. I dont believe this to be true. In
fact I would say that recovery from the Europa is much better than other
aircraft I have flown.
In the circuit you turn on to finals at 65kts and the stall speed (flap
down) is less than 45kts. Stall warner will go off at about 50 kts - plenty
of warning. If you are flying the correct circuit speed (making allowance
for wind and turbulence) you wont stall. This applies to all aircraft.
I really dont understand your problem.
BTW I have flown the Europa into a turn and deliberately induced a stall -
its easily recovered.
I dont believe you can predict an aircrafts stall characteristics without
actually flying it. Thats the point of test flying.
If you have doubts about an aircrafts behaviour take it up to 3000ft with an
experienced pilot (ie: on type ) then stall it straight and level, then in a
turn. Try it both ways in case its worse in one direction than the other.
I had the same concerns as you do till my instructor made do this.
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carl(at)flyers.freeserve.
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| Posted: Fri Sep 05, 2008 1:34 pm Post subject: Europa-List: Classic stall characteristics |
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I guess I didnt really answer your real question - can you tell a "wing
dropper" by looking at the aircraft and the answer is no.
You could check the washout with a digital level but there are so many
variables (eg: the flaps) that I doubt you could reach a meaningful
conclusion. If the aircraft is fitted with stall strips it might suggest
that there was a tendency to drop a wing (before the strips were fitted).
BTW many commercial aircraft have stall strips fitted - the problem isnt
just limited to homebuilds.
The only reliable way is to test fly the aircraft with an experienced Europa
pilot.
A word of caution regarding stalling with the wings level. We discovered on
our aircraft that the instrument panel wasnt put in straight - ie: aligned/
level with the wings. If the aircraft is stalled with reference to the
instruments (ie: turn & slip) it drops a wing because the aircraft isnt 100%
level !!!. Till we realised what the problem was, we always wondered why
the ball wasnt in the centre.
The fact is many Europa panels arent level - I suspect its a common problem
with homebuilds.
Carl Pattinson
G-LABS
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