rcpattern
Posts: 2656
Score: 100
Joined: 10/17/2003
Last Login: 5/24/2013
From: Great Mills,
MD, USA
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One thing the T-canalyzer does is that increase rudder authority. Not only does it add a little more side area, but more importantly, it does straighten up the airflow back to the rudder, thus making it more effective. There are benefits, but some designs use them more than others. I've been flying the BJ Craft Episode recently and it has more rudder authority than anything I've ever flown. The rudder is slightly larger than the Nuance, but not enough to completely explain the difference. The Canalyzer obviously helps with rudder authority. I think on the Episode, which, looking at the new Axiom and others, I think they are using similar ideas to help the plane snap. They are reducing the wing area at the tip, but enlarging the canalyzer to put back the wing area they are losing on the wing. The Episode snaps harder than anything I've ever flown, and it is very easy to stop. I have not talked to CPLR about this, but judging by the looks of the new Axiom, I'm guessing he used the same thought process. I don't think any of these guys put stuff on their planes, just to put stuff, as that makes no sense. They experiment and try different things and determine if they work. The differences may be subtle, and may only make a change in one or two maneuvers, but if it helps, it helps. Once again, we have to remember, the people designing these planes are doing it for THEIR benefit with the sequences they fly.
Dave Lockhart is a perfect example of this. Dave experiments with different fences and such in various locations. If you look at his Bravo's, the one with the single prop has completely different fences and such as the one with the contra setup. Dave didn't just put this stuff on plane because he likes cutting up depron. Through hundreds of flights, he has experimented with them and found what works. Having had the opportunity to fly a lot of his stuff, I have to admit that it works. None of these top end FAI ships are designed to fly the lower AMA classes, and in many cases they can be harder to fly. The Episode, for example, has so much rudder, than you could easily get in trouble in the lower classes. It also has HUGE amounts of side area, whereas the Monolog, and Prolog have smaller fuse profiles and as such tend to penetrate better. They also design these planes to compensate for their weaknesses, while leaning on their skill to overcome some of the compromises it creates. If there was a magic airplane out there, we would all be flying it. All pattern planes are a compromise. QQ probably put the fences on the fuse to determine if they help. He determined they weren't necessary, so he suggested they leave them off. Plain and simple.
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All Forums >> RC Airplanes >> Pattern Universe - RC Pattern Flying >> RC Pattern Flying >> RE: Oxai Splendor- New Quique Somenzini F3A Design! 
RE: Oxai Splendor- New Quique Somenzini F3A Design! - 
