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Old Jul 20, 2009, 12:06 PM
No substitute for aspect ratio
SPasierb's Avatar
Norwalk, CT aka the Nutmeg State -- I just can't seem to find any %$#@! nutmeg here?
Joined Nov 2003
2,262 Posts
Cool
Aircraft Center of Gravity Calculator

Aerodynamic Center (AC), Mean Aerodynamic Chord (MAC), Center of Gravity (CG), Neutral Point (NP) and Wing Area

http://adamone.rchomepage.com/cg_calc.htm

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Old Jul 20, 2009, 02:17 PM
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Rhode Island
Joined Feb 2007
46 Posts
Very cool, Thank you
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Old Jul 20, 2009, 06:28 PM
Kenny- Really!
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USA, CA, Cathedral City
Joined Jul 2007
809 Posts
just out of curiosity, i tried using this calc program, and another that allowed a second taper in the LE, and it just wasn't enough. do you know of another that would allow for a triple taper wing? also on the second and third panels of my particular wing, the TE sweeps forward a bit..... any way to allow for this?
THX
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Old Jul 20, 2009, 06:32 PM
No substitute for aspect ratio
SPasierb's Avatar
Norwalk, CT aka the Nutmeg State -- I just can't seem to find any %$#@! nutmeg here?
Joined Nov 2003
2,262 Posts
Sorry -- I don't. Will look around and post if I find anything.
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Old Jul 20, 2009, 06:57 PM
Kenny- Really!
exciter900rr's Avatar
USA, CA, Cathedral City
Joined Jul 2007
809 Posts
Thanks- I looked and looked, but came up short too-
I have an F3B sailplane that the manufacturer has supplied the c/g for me, but it is like 48% to 50% and that just seems wrong, but conversely, flying it yesterday on the slope makes me think it could be right?
I'm just looking to see science support the c/g.
KM
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Old Jul 21, 2009, 05:01 PM
Keep calm and don't blink
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Hamilton, New Zealand
Joined Jun 2005
2,020 Posts
I just find a field with long grass and biff it
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Old Jul 21, 2009, 05:43 PM
No substitute for aspect ratio
SPasierb's Avatar
Norwalk, CT aka the Nutmeg State -- I just can't seem to find any %$#@! nutmeg here?
Joined Nov 2003
2,262 Posts
Quote:
Originally Posted by KiwiKid
I just find a field with long grass and biff it

A time-honored approach.
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Old Jul 21, 2009, 07:40 PM
Kenny- Really!
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USA, CA, Cathedral City
Joined Jul 2007
809 Posts
Yeah, with a replacement cost at over a grand, I think I'll try NOT to biff it!
The plane was still porpoising a bit at speed, so it tells me it could go back further... It's just awfully far back for a sailplane IMHO...
BTW, Sorry to Hijack the thread Spasierb
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