RE: What is cubic wing loading????
Seems to me I've seen stuff where the airfoil thickness is taken into account in calculating the wing volume.
From what I see here it's only considering the AREA rather than the actual wing volume. The forumula here is just covering the basics wing area loading with chocolate to come up with a number that does not properley consider the actual wing volume. Granted the resulting number means something but it's no more sifnificant than the basic wing loading since the third dimension to make it cubicly related isn't there.
There's more out there than I haved time to find just now but perhaps someone else can back me up on this.