Interesting Centuri Mach 10 on Ebay
https://www.ebay.com/itm/VINTAGE-CE...CwAAOSwE~lasu-i
If you've ever built one, you'll likely notice the oddly straight wings right off the bat. I'd be interested to see how this one glides, but not $60 interested. |
Bill, he's selling the kit, not the built model...so you can set the wings they way you want (well, except for the price).
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Yes, but do the kits have wings shaped like this? :rolleyes: I'd love to know what the performance gains/losses would be. |
This is a really easy and inexpensive kit to clone. I've built at least 5 of them and moved the wings forward, back and added dihedral. It boosts funny but I got it to glide fairly well. Looks like a MIG in flight.
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Many high-performance aerobatic and slope-soaring R/C sailplanes also have moderately-swept wings. The "stock" Mach-10's wings are highly-swept, like the wings of a supersonic fighter. But while they are aesthetically pleasing, they don't produce as much lift at subsonic speeds. They can also--like long conical and ogive nose cones that are made for supersonic use--have more drag at lower speeds because they have more "wetted area" than is necessary at subsonic velocities. |
I've found that the Mach 10 is more "air brake" than "glider", really. In no way is it a performance glider. Keep the wings square-edged and unsanded so that it slows as much as possible before landing.
I cloned the Mach 10 about 18 years ago and I still fly it fairly regularly. It's a pretty tough bird, but I made sure that it's a pretty rough bird, too, so that it slows down decently as it decends. When gliding, it kinda stays oriented correctly but comes in fairly "hot". It doesn't glide so much as "fall with style". And, yup, it lands pretty hard, with an impressive bounce and tumble every time. Really fun rocket! With rocket's forward motion, the little wedgie up on the tail produces downward thrust along the long moment arm of the vertical stab which drops the butt end down, causing the wings to tilt upwards thereby presenting lift and breaking force... a neat air-brake mechanism/demonstration. The system becomes less effective if an airfoil is sanded into the main wing because the upward lift of the wing airfoil overpowers the force presented by the little tail wedge. So... don't airfoil the main wing! |
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