On Wed, 19 May 2004 13:49:13 -0700, Paul Lee wrote:

Richard Riley wrote in message
. ..

.................................... When I say exactly, I mean
exactly - to the fraction of an inch in planform, with the same
templates, with the same modified Eppler airfoil on the mains, and the
same Roncz 1145 MS on the canard.............

Rich,

There is a curiosity that I found about the SQ2000. When Stan demonstrated
stall, the plane did not dip and dive (bobing) like typical canards, but
simply descended at a steady rate - or climbed at a steady rate in a power
stall. The canard just shakes slightly almost like conventional aircraft
before a stall - i.e. it failed gradually and not suddenly. The feature
shure wis handy if you inadvertendly land too slow - it would descend at
steady rate and not dive into the ground.

I haven't seen this behaviour mentioned for other canards and Stan would
not tell me how he got that. Are there other canard designs that do that?
Do you know how it works?

--------------------------------------------------- Paul Lee, SQ2000
canard: http://www.abri.com/sq2000


I'm not Richard Riley, but I'll pipe up anyway.

I'm betting that there wasn't enough pitch authority to get the angle of
attack high enough to stall the canard. The situation might be quite
different if the CG was further aft (i.e. pilot only, or with pax in back).

--
Kevin Horton RV-8 (finishing kit)
Ottawa, Canada
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