RCU Forums - 3D wing loading

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nightchook

08-25-2004 06:19 PM

3D wing loading

Hi guys..... who can tell me what the ideal wing loading for 3D flying is, on any model there must be a rule of thumb.... I know you can torque roll a P-51 if it's set up right
I've learnt about Power to weight ratios, large control surfaces etc, can you over power a 3D model???

Airbike

08-25-2004 07:22 PM

RE: 3D wing loading

Well, how about a range of wing loading for 3D?

11oz foamy 3D at 380 sq in (2.64 sf) = 4.17 oz/sf

to

17 lb, 50cc class, scale aerobat, at 1365 sq in (9.48 sf) = 28.69 oz/sf

to

38 lb, 40% class, at 2400 sq in ?? (16.66 sf) = 36.48 oz/sf

anyone know what that 70% Staudacher weighs? and wing area? :eek:

Power: a little is ok, more is better, too much is just right!:D

bwick

08-25-2004 07:35 PM

RE: 3D wing loading

can't really overpower a plane... unless the engine is just way too heavy or vibrates the plane to death

_shadow_

08-25-2004 09:57 PM

RE: 3D wing loading

Guys,

Wingloading should be as low as you can possibly get. I scratched a funly, 65" wingspan, WL is 8.5oz..trust me...it 3D DAMN well.

Regards
Marcus

3littlefonzies

08-25-2004 10:05 PM

RE: 3D wing loading

Quote:

ORIGINAL: Airbike-RCU

Well, how about a range of wing loading for 3D?

11oz foamy 3D at 380 sq in (2.64 sf) = 4.17 oz/sf

to

17 lb, 50cc class, scale aerobat, at 1365 sq in (9.48 sf) = 28.69 oz/sf

to

38 lb, 40% class, at 2400 sq in ?? (16.66 sf) = 36.48 oz/sf

anyone know what that 70% Staudacher weighs? and wing area? :eek:

Power: a little is ok, more is better, too much is just right!:D

http://www.gsal.org/projects/Robt_Sawyer/70Staud.htm

That one? 350 lbs. dry. [X(]

I think the AMA would frown on that one at a sanctioned flyin.:D

Airbike

08-25-2004 10:56 PM

RE: 3D wing loading

350 lbs!
Well, just gotta get a 720 lb thrust setup, howz about an IO-320?:D

Seriously, the wing loading desired for 3D aerobatics will depend on the Reynolds number that the model is operating in. A simplistic way of looking at it is that the larger the model is, the higher the wing loading can be and still fly like the lighter wing loading of the smaller models.

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