OverTheTop wrote:An extension of this idea would be to fold an aluminium strip and fold it at an acute angle. It could go 10mm or so along each side of the fin. This would be fitted over a rebate on the leading edge. Heat generated on the leading edge would be rapidly moved backwards to cooler areas, keeping the front edge cooler and cloth veneer happier.
Here's one I prepared earlier.
In researching composite fins at supersonic velocities, I observed a common failure mode where the resin softens due to heating, and the airstream 'gets under' the laminate at the leading edge, peeling the layers off.
To prevent this, some 0.8mm stainless steel sheet was folded in a press brake and secured over the leading edges with about 6 M3 bolts which went through the laminate and core material (the stainless was tapped M3). These bolts were then ground flush and the whole thing faired to the fin.