What many of you forget is that the aircraft has inertia -
when it passes from one column of air to another it will try
to keep equilibrium: So when entering the air the main wing
will have an increased angle of attack for a while, thus
producing more lift and slowling down a little. When the
stabilisator enters the riding air it will be affected much more
as the tail is so much lighter.
If there is a sharp divide between the static and the rising air
the main wing might even stall as it enters the thermal, if flown
slow enough, accentuating the behavior even further! So loading,
AR and chord plays a major role.
Tord,
Sweden
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Tord S. Eriksson, Ovralidsg.25:5, S-422 47 Hisings Backa, Sweden
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