Saturday, August 8, 2009

Lady Bug

So I was browsing my usual forums (this time airplane building stuff, yeah im a geek shutup) and I came across a design I thought would be really cool! so I asked where to get a set of plans and I think I got the nicest most inspiring message ever. Here it is:


Look at post #1 and get the general idea; Post #3 says span is 21-1/2"... see solid sheet stab and elevator and rudder... some guys use a brass tube and make a full operating elevator and rudder [like jets use] supported inside the fuse, and a brass tube inside the one glued to the fuse which has the rudder glued to it, or the elevator glued to it. Solder a little wire to the inside tube for the servo wire to connect to, etc. So a 21" span and guess at 120 sq. in. wing means... draw a circle for the wing tips.... sat 7" dia, A=pi r squared... ahhh... 38 sq in... from 120... so ... 80 sq in needed for center section... at 7" chord...ahhh 11-1/2" center section... plus 3.5 tip plus 3.5 another tip...so it comes out 18-1/2" wing span... a little too small [maybe]. So use an 8" circle, and 8" chord...and 13-1/2" straight.... that's 21-1/2" span ... errrr..tips = 50 sq and center = 108 sq... total 158 sq inches. That would be nice and slow, and the full acting stab-er-vator and full acting rudderavator would be good for such a slow Lady Bug. [need lots of area for slow moving planes, like the indoor stuff] Guess at a fat rib for the wing [from post #1] Guess at the fuse dimensions by drawing the wing side view on paper, then draw and 'fit' a fuse to match the wing... add elevatorertator and rudderervator and some bent wire landing gear.....and a bamboo tail skid....make some blue foam wheels... balance it 25% to 33% back from the LE and take off from a big sheet of cardboard box [from the refrigerator supply man] BING !! Now you're a designer and a hero!! [of coourse, yoou can change dimensions to make it look like you want]

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