CLS447
Platinum Member
- Joined
- Oct 30, 2003
- Messages
- 6,324
- Location
- Reading, PA
- Aircraft
- Air Command 503 & Air Command SxS /EJ2.5
- Total Flight Time
- Aprox 400 gyro
This thread is DEAD ! Thanks for the lack of input !
NoWingsAttached;n1118357 said:I have a thing about T tails. I built a wind tunnel to test all of the different tail designs for a pusher gyro back in 2008 thinking that a V tail would be great. I was right, although Ernie's cruciform tail is the best, the V tail is a close second, and the original Bensen design with the HS ahead of the VS is unbelievably stable! And I discovered the T tail stinks - it is by far the worst design of all, which tells me that anyone whoever designed a gyro with one did absolutely zero testing of models in a wind tunnel, quite obviously. And if they didn't bother to test aerodynamics of their design, what the hell are they doing designing and selling anything that flies and that my life depends on....
ckurz7000;n1122926 said:Apart from hear-say, what is your source of information?
A model of the ArrowCopter was tested in a wind tunnel. There were also extensive fluid dynamics simulations run on it. And it underwent a very stringent flight testing regime. And then I've been flying it for some 500 hours. And, believe me, stability testing was first and foremost on my mind.
The upshot: it is VERY stable with no adverse characteristics determinable -- it would not have otherwise passed certification. It was the first gyro to be certified in Austria and the authorities were all over it. Inside and out. They rode the rear seat during some of the crucial test flights.
The point is that you can't make a sweeping statement like this. I really wish you wouldn't just blabber on without knowing your stuff.
Greetings, -- Chris.
Smack;n1122920 said:Yes, I think that we can trace the death of this forum to the change in format. Turns out that was quite the mistake. I appreciate those that run the mechanics of the forum, but there is zero doubt that the traffic on this site has absolutely cratered.....
Brian
NoWingsAttached;n1123070 said:A whole bunch of gyros have T tails, and a whole slew of their owners love them - as you love the ArrowCopter. That's nice, but it doesn't make the T tail any better than being the worst design ever imagined for a pusher gyro. You are not wrong to love them, but the designers are mistaken if they think this is the best design for a tail and anyone who claims they are any better than the worst thing on the back of a gyro is mistaken. You folks can always learn how to fly it and deal with the adverse yaw - most especially when correcting for a bad landing while crabbing in a stiff cross wind. One good method is to land into the wind with zero roll. Another is to be sure the wind is on the opposite side of the tail as is the prop wash. If you get caught in a changing wind with your pants down, well, good luck friend.
Keep your spinny side up and your rubber side down.
Mike G;n1123912 said:Chris
OK I'll send you a pm.
I'm told it was discussed on the German forum but I could never get to read anything when I tried to get on it, I wouldn't have understood much anyway, it's all in German
Mike G
Jean - Claude;n1124896 said:Mike,
Mu of Arrowcopter is higher that much others. Vertical force vibration 2/rev transmitted on the mast tip increases.