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Old 01-26-2006 | 10:03 AM
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Lomcevak Duck
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From: Enterprise, AL
Default RE: G forces

If you need someone to do the math and calculate the vector forces for you, maybe you should tackle a less-involved project. Also, ANY new plane should NOT be flown with spectators present the first time.
Safety is my main concern. I know a little bit about design and aerodynamics and am almost positive I will have very little problems making this a safe and pleasing aircraft to fly. I agree that spectators should not be present at the initial test flight, but just because a plane makes it through the first several flights does not mean it will hold up through the next 30. I would hate to endanger anyone and that is why I am going to subject the wing to such a harsh test on the groung before I ever put it on the plane. I know exactly where the forces go on the wing, and where it will be most likely to fail. I have never been good at math, and just needed somebody to check over my work incase I did something wrong. Turns out I did. I appreciate mesae's aid.

I am planning on this model to come in about 5-6 lbs FYI. It's not going to be a racer, just a fun sport plane; something like a Magnum, but faster. I do not plan on it being able to take a pylon at 250, but I wanted to test it to standards higher than it would ever see in flight. I have not started construction yet, but I am planning a swept blue foam wing with carbon fibre spars, balsa LE,TE, and tips, ply center rib, sheeted with 1/16" balsa. I will glass the center section, and if I do not get the rtesults I want in my initial tests with this design, I will reinforce the weaker areas with carbon fibre matte, and glass the whole wing. If that doesn't do it, I will either redesign the wing entirely, or scrap the project. As stated earlier, I want a fun plane, but safety is my first priority.

Thanks all for the help, and I'll let wou know how it goes.
-Steve