more pics…
check out my test tunnel …foil simulator…for observing flow around foils…
this day the pressure was to high for testing tho…
Hi Bert
can anyone give an example of a wing that is twisted so the leading edge is lower at the tip???
The only real example I know of is when you go to anhedral in a wing rather than diheadral all though they still have washout
very few aircraft have it ,some hang gliders have it ,it completly changes the stability of the wing,it works on hang gliders because they have a floating variable wing ie the wing twist changes inflight between the two tips when the glider is turning
It may relate to fins as cant, but I doubt it
Regards Mike
ps Have you checked out the abroholis islands yet
Some important factors to consider is that fins do not travel through pure water alone. That is, we are dealing with both air and water. The amount of aerated water that surrounds the fin and rails in varying degrees and consistancies will affect the overall performance of the board. The difference can be likened to sliding along on a pure glassy wave as opposed to riding through white water.
cheers Hicksy
hey sabs…about 2 months back i got an offer to go out to the abrohlos…
but i turned it down coz the condititions werent favourable…plus it was one of those real impromptu things…you know the ones where you wake up the next day and say “how the hell did i get here???”
have seen some nice pics of the place…
those photos i posted of surf are on the mainland just past the shadow of the islands…hm might have said to much then…
the place needs some people anyway…when im up there i get sick of surfing by myself…
so the term washout may still be relevant then???if it applies to wings that flex??
if thats the case wouldnt a flexible wing with a raked tip automatically handle the problem of wash out because when the whole wing is starting to stall at the base first because of to much AOA ,then the tip would flex in such a way as to not be experiencing as much AOA…
has anyone got a flight manual or some aircraft literature that clearly defines what washout is and the effects of it???
im sure blakestah spoke about it at one stage ,i think??
what keith did was invalueable , in keeping the various meanings in precise terms…
i got something out of that …coz i always thought camber was the thickest part of the foil…but its actually the distance from the chord line…so it would be measured differently, than just measuring the thickest part of the fin…
anyway having the correct meaning for every term will ensure we can make progress establishing working principals and avoid ambiguity…
regards
BERT