Re: [andrewstewart] Vented PCs @ terminal on a skydive?
Very little, I believe. At terminal, with a skydiving system, I think there are going to be many variables that are far more important than a vented PC.
My personal belief is that F-111 PC's are better, in terms of oscillation and orbiting (hence effect on heading) than any ZP PC's, even vented ZP PC's.
That said, I believe that the French jumpers who originally developed vented PC's used them on their skydiving rigs for quite a while before taking them into the BASE environment. They probably have some data on their use in skydiving.