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Design => Stunt design => Topic started by: Motorman on May 21, 2015, 11:16:58 AM

Title: Fuselage Area
Post by: Motorman on May 21, 2015, 11:16:58 AM

Is there a general rule for side area of a stunt fuselage? Is it critical at all?

Thanks,
MM

Title: Re: Fuselage Area
Post by: Howard Rush on May 21, 2015, 03:32:37 PM

There probably is, but like lots of stunt lore, it's probably based on a bogus assumption.   

Title: Re: Fuselage Area
Post by: Chris Wilson on May 21, 2015, 07:02:29 PM

Would it be fair to say that the fuselage area gives the judges (and pilot) a better, more accurate silhouette to follow?

Title: Re: Fuselage Area
Post by: Motorman on May 21, 2015, 08:44:56 PM

I'm about to make my first full fuselage. If I can just make it functional that would be easy. Is the thrust line and the stab always above the wing?

Title: Re: Fuselage Area
Post by: Tim Wescott on May 21, 2015, 09:10:47 PM

You want it stiff in both torsion and bend.  And you want it light.  That implies either some cross-sectional area, or some carbon fiber tubing.

Title: Re: Fuselage Area
Post by: RknRusty on May 21, 2015, 09:50:44 PM

If you can manage to build a small cross sectional area and still get the necessary stiffness, it seems like it would be less susceptible to being blown around by wind than one with a taller wider fuselage. At least I get that impression from my profiles, like the Ukey, which resembles a primitive TEOSAWKI with a foam wing and a much smaller stab. Its fuse is actually just a 1/2" wide pine(yes pine) board, barely tall enough to cut a hole for the wing to pass through.
Rusty

EDIT: Correction, I don't think the wing actually passes through it, just the joining dowels. That's what makes it so indestructible.

Title: Re: Fuselage Area
Post by: Igor Burger on May 25, 2015, 06:44:15 AM

Quote from: Motorman on May 21, 2015, 11:16:58 AM

Is there a general rule for side area of a stunt fuselage? Is it critical at all?

not at all ... until wind or turbullence starts :- )))))