Your link on Gurney strips was fascinating Martin, but I had no idea that the concept had spread to aeronautics in general. A Gurney strip is nothing more than a lift modifier on the trailing edge of an aerofoil section, which could I suppose be a boat rudder. The name comes from one Daniel Sexton Gurney, one of the best racing drivers that the USA has ever produced, still a regular visitor to the Goodwood Festival, and an absolutely charming gentleman. His original idea was to add a narrow strip of aluminium, or aluminum as he would have caused it, to the full width rear bodywork of sports racing cars, as far as I can remember, he first did this to cars he was racing in the 1960s, but after a while most such cars were equipped with fairly substantial downforce inducing shapes moulded into the bodies, and a Gurney was an additional metal strip bolted to the rear of the moulded part, usually with slotted holes to that it could be moved up and down to alter the effect. The term is still used in racing today, and I never imagined that my early employment history would ever be useful in this way on Mayhem.
