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Marske Flying Wings do not stall
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August 2nd 03, 07:48 PM
Eric Greenwell
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In article cCUlhtvFIYkV-pn2-389QQ1tlWSrk@localhost,
says...
On Sat, 2 Aug 2003 12:49:49 UTC, "Bill Daniels"
wrote:
: My experience with Marske gliders is the same as other pilots in that the
: ailerons remain fully effective and the elevator control retains a solid
: feel.
Sounds just like a mushing stall in a Ka8!
: Even the description, "mushing stall" seems inappropriate. The glider
: doesn't even sink rapidly at minimum airspeed with the stick full back - it
: just glides slowly along with all controls fully effective.
Sounds just like a Ka8 with an elevator stop. Primary gliders used to
have these ...
Can the Ka8 with the elevator stop be flown in a 40 degree banked turn
in a mushing stall? Or, asking the question another way: what is the
steepest turn the Ka8 can be flown in and still achieve a mushing
stall?
If I understand the situation correctly, the flying wing will still be
able to achieve the "mushing" condition even in steeply banked turns,
while a conventionally tailed aircraft, like the Ka8, will only be
able to do this in shallow turns (say, 20 degrees or less). This
happens because the mechanism for limiting the AOA in straight flight
is different for each glider:
Flying wing: when near stall, airflow separation at the trailing edge
limits the up elevator effect.
Tailed glider: elevator travel is mechanically limited.
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Eric Greenwell
Richland, WA (USA)
Eric Greenwell