N1EDM

My Feedback: (2)

I inherited a powered glider. The wing is 72" span x 8" chord, and flat bottomed. Power will be a Norvel .061.

Anyway, the fuse was, bashed, so I'm trying to build another fuse for this wing section... and the tail feathers that were salvaged...

In sketching up the new fuse, I tried to copy the incidences from the old one. If I set the stab at 0 degrees, I get a wing incidence of about 2-1/2 to 3 degrees, and engine downthrust of about the same... I'm keeping the same moment arms.

Does that wing incidence sound right to you for a flat-bottomed airfoil? It seems a little excessive...

I'd also like to put landing gear on just to protect the prop and engine during landing, not to ROG. Any recommendations?

Suggestions, Mr. Spock????

Thanks,

Bob

combatpigg

My Feedback: (3)

HI N1EDM! I have a glider with a flatbottom wing, and the wing and stab are zero-zero. The engine has a good deal of down thrust. I like having the engine above the wing, [I use the plane to teach people how to fly]. If you had a music wire skid hanging down, that would protect the prop some. If you use a rubber or nylon prop, it won't break if it hits grass.

N1EDM

My Feedback: (2)

Thanks for the advice... this is a high-winger (the wing is polyhedral, I forgot to mention that before) or else I could make it a low-winger.

I did have the plane flying once and it seemed OK, but I suuuuuuuure wish I hadn't tossed out the old fuse.. I'd like to double check it. Yeah, the zero-zero setup DOES seem to make more sense. But, I also notice that some large planes, like the LT-40 have a 1.5 degree positive incidence.

The 2.5 degree incidence on this wing would seem to want to make it stall, it seems to me..

I haven't cut any balsa yet, which is why I am asking this question. It's not too late to make changes.

Any other ideas out there???

Bob