#31
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Okay:
Mass = 200g Wing area ~110 sq. in. Here's the fore-aft balance, suspended from the CG in the Tercel instructions. It's upside down, but still a little tail heavy. And here's the left right balance after a repair to the wing attachment. It looks to me like the wing isn't on the fuselage square. I'm going to redo that.
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Charles McGonegal Ciderwright AEppelTreow Winery & Distillery Ad Astra Tabernamque! |
#32
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That's quite a bit tail heavy.
Always error on the opposite of that. If it was nose-down that much it would probably glide, albeit fast.
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When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#33
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Useful information . . .
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#34
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I'm at ~9 oz.sq ft, when it looks like hand toss gliders are under 2. I wonder if it's worth trying to save.
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Charles McGonegal Ciderwright AEppelTreow Winery & Distillery Ad Astra Tabernamque! |
#35
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Absolutely!
It will just set up in a fast glide, but you can still get an exceptional sink rate. Fix the tail heavy state, go slightly nose heavy, and it will fly. Allen |
#36
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Quote:
Pitch/Yaw can be due to off axis thrust with regular rockets, and once I got my hands on a good DSLR I found that off axis thrust is extremely common. It might be a factor on rear engine boost gliders also, but probably not as much on a front mounted motor. After burnout, it would cease to have any effect anyway, and that's the majority of the ascent with most models.
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I love sanding. |
#37
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The OP stated these were hand tosses.
It wasn't yawing under power.
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When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#38
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Quote:
10-4. I think I mention it would really affect his model anyway.
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I love sanding. |
#39
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I did check to see if the earlier warp had returned, and it hasn't. The fuselage is still straight.
We're in for a few days of crappy weather, so I won't be able to make much progress for a while. I'm thinking that I'll go out to the range on an off weekend and do a test flight before flying at a club launch.
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Charles McGonegal Ciderwright AEppelTreow Winery & Distillery Ad Astra Tabernamque! |
#40
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Ok,
12g of additional nose weight and 7g on the right wing tip and I can get level, if not great, glides. Hanging from the frame, she looks left-right balanced. I must have accidentally made the aerofoil unsymmetrical to have such a large left roll. On to test launches.
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Charles McGonegal Ciderwright AEppelTreow Winery & Distillery Ad Astra Tabernamque! |
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