What is the formula that you would use to figure out what the wing loading of a particular plane would be.
Thanks
AL

Weight in oz divided by wing area in square feet gives oz/sqft.

Wing loading is usually listed as Ounces/Sq Ft.

Example

So on a UCD3D the wing area is 1072 sq in.

To convert that to square feet you divide it by 12 TWICE to get 7.44 sq ft.

Advertised weight is 7 lbs to 7lbs 6oz. wishful thinking.

More like 8 to 9 lbs.

But lets assume the factory weight for now.

convert pounds to ounces by multiplying 7 by 16 (16 oz per pound)

That would give you a range of 112 to 118 ounces

112/7.44 = 15.05 oz/sq ft
118/7.44 = 15.86 oz/sq ft

Realisticly 8-9 lbs it comes in at 17.2 to 19.35 oz/sq ft.

So like golf, the lower the number the better (slower it will fly before stalling)

awsome!!! Thank you. I had everything right except the divide by 12 twice part...DUH!

Thanks Guys
AL

if you can remember the number, you can divide pounds by square inches and multiply by 2304. 2300 comes about as close as most scales.

7 / 1072 x 2304 = 15.05

7 / 1072 x 2300 = 15.02

Just remember 2300

Since this is the 3D forum, figured I point out quickly that wing cubic loading is often a better indicator of flight performance than area loading. To find cubic loading, divide the weight of the plane by the volume of the wing.

If I can't use my fingers and toes to do the math, I'm pretty much done.

I imagine it's quite elaborate to calculate a wings volume. Please tell us more!