wonwinglo

*** Thanks for the succint explanation Peter,most interesting,I know
that this was a model in this case,albeit a very large one, but
there are a few valuable lessons to be learned here.
The model obviously exceeded the flight envelope in regards to the
flight characteristics of the full size B-52 but there have been
caes in Vietnam where disabled B-52 Stratofortress aircraft have
encountered severe wing drop at high angles of bank,couple this with
high angles of attack as you point out with aileron deflection and
the situation becomes critical,an unfortunate combination of factors
which could possibly have led to the demise of this model.
High aspect ratio wings also have known undesirable characteristics
as regards to flexing and aileron reversal caused by airflow over
extreme tip portions,glider pilots are all to full aware of this
problem and steer well clear of getting into trouble with that
particular flight envelope,in the case of the B-52 one other aspect
has to be considered and that is the sweep of the wings,whether the
situation is aggravated in the situation that you mention is
possible ?
Annedral can in certain cases increase stability such as on the
tailplanes of modern jet aircraft where the jet efflux is directly
in line with same,the designer recognises the need to make the most
of anything on a jet aircraft that will increase the control respone
in the aircrafts airflow,propeller driven types are so different in
as much that we have a wide circular slipstream constantly making
its way around the fuselage adding that all essential bite on the
controls,the only down side being the torque of the airscrew trying
to twist the machine the other way to the rotation of the propeller.
All these factors add up in the main context of stability at
unusually high bank situations betweeen jets and piston types,in the
very early days of all through jet training in the Royal Air Force
the problems were highlighted whereby relatively low powered types
such as the Jet Provost were giving pupils a very hard time,control
lag response did give rise to accidents.
All of these factors add up and when one considers the 'BUS'
syndrome (bum in seat)feeling to the aircrafts responses,the model
situation is even more volatile.
Very sensible of you to allow yourself to become grounded that day
Peter.
There are obvious lessons to be learned here for the future,the B-52 is obviously a tricky subject as a model and needs to be approached with great care.

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'And there I was oil on my goggles from a broken pipe,then I looked at the altimeter,all I could see was the makers name !'
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