Two considerations:Delmar Benjamin flew the GeeBee R2 Replica inverted and checked the stall speed on its maiden flight on December 23, 1991..
I’ve never flown a canard, does the nose stall and drop or the whole aircraft just kind of drift down at stall speed?Raptor Aircraft
5 minutes ago
Technically it won't stall. It just won't let you fly slower than about 80 knots and even then you will be descending about 200fpm. We'll find out when I get to that point. However, adding flaps and converting the ailerons to flaperons is something that is planned.
This is a reply from the latest YT video, Add weight and even more complexity !!!,that's the way to build aircraft for the 'homebuilder', It can't end well :-(
Designed and operated correctly, the canard does stall, but not the main wing. This causes the nose to lower.I’ve never flown a canard, does the nose stall and drop or the whole aircraft just kind of drift down at stall speed?
There are a few different modes of stall. The standard one is as @Voidhawk9 states - as the elevator deflects more, the canard will stall but the main wing will remain flying. The nose will drop a few degrees, the canard will drop below the critical stall angle, and it will rise back up a few degrees. This "bobbing" will occur with full roll control - I've performed stalls in a 60 degree bank in my COZY MKIV, and can climb at over 600 fpm while stalled with application of full power, with the nose bobbing all the while. It's somewhat disconcerting.I’ve never flown a canard, does the nose stall and drop or the whole aircraft just kind of drift down at stall speed?
So it's possible Raptor's climb rate could improve substantially if he would climb in a stall........- I've performed stalls in a 60 degree bank in my COZY MKIV, and can climb at over 600 fpm while stalled with application of full power, with the nose bobbing all the while. It's somewhat disconcerting.
While the ideal world static port location is a spot that reflects true static over the entire flight envelope, many planes have achieved acceptable solutions with fences, steps, and other manipulations of the air near the static port. I do like the idea of simply programming the display with corrections for altitude and true airspeed, but no one is doing that ... yet.At the 4:00 or so mark in the latest video, he says something about putting a small fence near the static port, that is driving air into the hole, giving him lower altimeter settings or lower airspeed, or something along those lines. Then he says that's "going in the right direction".
Please forgive my catastrophic lack of education and intellect, but intentionally creating incorrect pressures at the static port, bringing all pitot-static related readings into question... is going in the right direction??!!??
Maybe. Probably more than one solution out there, and the big questions are to up side (effectiveness) and downside (drag, weight). I am skeptical that this is due to vortices off the canard, as other canard ships are very similar in canard-wing arrangement and do not have axis coupling issues.Maybe a solution to dutch roll could be to place a large fence right where the canard vortice hits the main wing.