pardon my ignorance guys (Slowie & Boogie) but does a super cavitating foil have a really thick / flat leading edge and does it work like those torpedoes that effectively create an air bubble (high or low pressure?) in front of itself thus reducing or eliminating drag completely. The science / mechanics behind it all is beyond my brain's limited capacity. I will google it and do some research.
10 minutes later.......................
Okay I'm an expert on the matter now
Firstly a few corrections above;
It's not an air bubble but rather a vapour bubble that's created
it's only the leading edge or head of the torpedo that is in contact with the water with the vapour bubble being created entirely around the trailing body
& it only really works effectively at speeds greater than 100knots.
So in theory at what speeds could a supercavitating fin effectively be utilised (+70knots , greater?) and would you require mechanically means to get you to effective operational speeds initially as drag would be too difficult to overcome as noted above?
