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Old 06-27-2010 | 06:27 PM
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dem45133
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From: , NM
Default Scaling info needed

Hello all... just found this site... looks like a great RC resource.

Well... a bit about me before my question (at least today's). I've been a aviation (non-model) homebuilt enthusiast for the past 35 years... and no, unfortunately I've never been able to really feed that interest past the profuse drewl stage (15 visits to EEAs Oshkosh convention... where I basic dehydrate and pass out from it!). If I'm ever going to build a hombuilt... I'd better start now. I do have some ultralight piloting time as well as Cessna 150 PP lessons I was unable to finish. Now I am a relatively poor man by most standards, but we did managae to buy an 18 acre place ( in a very low cost of living area... obviously its not in NM)... we intend to fully own by retirement. All my toys have live at home and eat only when I let them... so long term fixed costs are out (you know, things like marinas or airport facilities). That means what ever I do for a airplane, it has to live and fly from home... but the only place to fly from is 400 x 600 ft small hay field. Thus STOL... no option.

But me being me... and tend to build or modify just about anything (I have a full shop)... I want my cake and eat it too. By basic design needs STOL airfoils are slow and draggy... yep just what one has to have for STOL... but they barely can make 80 kts on a 100hp in cruise... lot of real reasons for this..

So... I need to build up a morphing inflight adjustble wing... with much less drag in cruise config.... in a byplane no less (why? because, one) its not been done, and two), I just like open cockpit flying...hands down. Thus the modeling.

Right now I'm workling the design and mechanicals which I intend to model and have a basic RC biwing ARF kit coming, along with a 4 ch full flight "kit" salvaged from a wrecked gee bee) , (I'll need 6 or 7 ch later),... , an older RC "NIB" 0.60 2 cycle glow... all off eBay, with which I will learn to RC fly for now.... I then will model my wing add more servos and prove it out with the model first (and be denonstratable to FAA prior to build). Worse case senero... I prove to my self it can't be done (without killing myself)... best case... I prove it to FAA homebuild personel and I incoprate it into a human carrying bird (almost wrote "real bird", but to modlers they are a real bird in every way really and likely harder to fly since you are not in it and using your own operational senses).

It will take a bit time getting used to to RC... and I hope throttle response/control is usable with a 2 cycle... I will also some how have to know when Im at the edge of stall... thats what STOLs do...so anyway now the have the gist of the plan.

So... my question to you all relates to real life scaling. Has anyone seen information I can get on transfering model performance... in particular... reverse scaling... I need to emulate a 100hp 1200 lb gross biplane with ~ 50ft STOL but capable of about 119 kts in cruise in a RC model and be able to show the calcs to FAA. Even though I've had the interest in flying forever...I didn't get into RC until now.... basically because the primary thing it will do to me is just be I big giant tease... I want to fly IN it not observe it from the ground.

(no I'm not crazy... but I'm not one to take "it cant be done" very well either... I'm more of a "watch me" type of guy ...thus the modeling)

Well thank you for your interest and any comments.

Dave