Michealvalentinsmith
Well-Known Member
I came across the captive column concept recently, and given the reported strength to weight ratios I can't see why it hasn't been adapted to aircraft spars?
This web site gives some pretty impressive numbers - and pictures - but I'm suspicious. The page has the feel of a conspiracy site and everybody is against the brilliant designer. It's a bit like all those 100 mpg engines that were bought up and kept hidden by the oil companies. If the idea was a good as they say it would be used everywhere by now surely? A Construction Industry Breakthrough Technology - The Captive Column Invention
If you look at the design it seems to me the strength shouldn't be any higher or lighter than simply replacing the windings with solid material to make a box or triangular spar. But it is certain worthy of further investigation IMHO.
This web site gives some pretty impressive numbers - and pictures - but I'm suspicious. The page has the feel of a conspiracy site and everybody is against the brilliant designer. It's a bit like all those 100 mpg engines that were bought up and kept hidden by the oil companies. If the idea was a good as they say it would be used everywhere by now surely? A Construction Industry Breakthrough Technology - The Captive Column Invention
If you look at the design it seems to me the strength shouldn't be any higher or lighter than simply replacing the windings with solid material to make a box or triangular spar. But it is certain worthy of further investigation IMHO.
