hmmm. interesting.

but

let us also consider the advantages and disadvantages of being a purple cumquat...

similarly if a kite is made from rock, sitting on the ground and shaped like a bulldozer, does the coefficient of lift still apply?

finally,

Is 'knots' trying to start a discussion?.. Discuss.

whatthe whatthe

You guys need to go kiting pretty badly ....

The kite is similar to a air foil ( wing).
When you increase the angle of attack into the on stream air flow , it will spoil the air flow over the concave component of the kite.Thus reducing lift , thrust and increase parasite drag(kite will not fly it will stall)
Their are kites on the market that will have these characteristics and there has been evidence supporting this over the last six months in this forum.
Wind shear will have the same effect on a kite particularly in gusting conditions.
Awareness is all this is about.
Having witness kites stall and then power up in a uncontrolled line of flight.

I reckon it'd be stalled alright. The thing would be, that's just the kite no longer acting like a wing and having air pass from LE to TE. Instead it would be catching every bit of that 30 knots as a flat sail.

For those who doubt my knowledge or experience.I have 12m Naish.
Have witness kite's stall and drop out of the sky under various wind conditions.

When I was younger and in my prime I used to ....
be a hanglider test pilot - it 'were' great fun & stalling was ....
Reynolds Nos -- tick
Drag ratio -- tick
Induced drag -- tick (changes due to pilot actions)
Parasitic drag -- tick (fixed due to shape)
Speed many variables here....

Without being able to mathematically prove it (test pilots give feed back!!) Bottom line flatter kite profile and higher aspect ratio more likely to stall with higher angle of attack. This means loss of lift, loss of control, and usually a drop till recovery or impact. The bonus of a kite is that it is anchored to U. U spend most of the time on a solid surface so when it stalls the direction the drag is acting is critical and dependant on the wind strength. Strong wind strong stall and big jump sum it up.

However the qu I want answered () once U have stalled and kite hits the water on a modern C kite do you still have to swim towards it to setup for re-launch aka old C kites (I hated having to do that)??

Ta

knots said...

For those who doubt my knowledge or experience.I have 12m Naish.
Have witness kite's stall and drop out of the sky under various wind conditions.

Hmmmmm. Sorry. Still a doubter of your knowledge and experience. You have tried to convince us of these qualities by saying you own a kite and have watched other kites.....

I don't think you've imparted any useful knowledge about kite surfing yet.

Name some kites that you think have inherent design faults that you have witnessed or preferably experienced. (assuming that's what you are trying to say)

I'll definitely keep reading though, to see what happens.

knots said...

For those who doubt my knowledge or experience.I have 12m Naish.

Touche! How could anyone doubt the knowledge and experience of someone with a 12m Naish?

I've always thought the Naish's (well, at least the sigmas) to be ugly and cumbersome, but knots has me thinking: perhaps I should get one so that simply by owning it my knowledge, experience and credibility will be increased!

Anyone got a crusty old Naish 12m for this seeker of knowledge and experience? I'll set it up as the centrepiece of a shrine in my living room and consult it as an oracle on all matters of importance.

Thankfully (most) kites fly much better than the spelling we have seen from knots of late.

I have nothing to say.

Technical stuff about flight... Great...
Noting that lift is proportional to velocity squared, at the upper end of the wind speed scale you will be getting ripped off the beach/water long before you can stall the kite due to excessive alpha !!! Unless you are a massive anchor ! A plane would not have that problem as it is not 'Tethered' and is free to stall at any speed.
In my opinion (whatever that's worth), bad (or rather inexperienced) piloting would be the cause of stalling in 98% of cases.
Having lived where there was not much wind for several years, I think I can pretty much keep anything up (pun intended) in minimal conditions...
What we all still see is people getting 'Tricked' by changing conditions. Please note that wind is not the nice, laminar flow of theory books and wind tunnels !!!
The answer is generally to FLY the thing and not let it sit... And feel what it is doing... (Use the Force !!!)
Or maybe not !!! Up to you...
BAP

who gives a ****! when is this thread going to disappear to page 2

pfr said...

who gives a ****! when is this thread going to disappear to page 2

not while im around.

(Use the Force !!!)

Paulio. Sorry to hear about your 'minimal conditions'.. Hope your partner doesn't read this forum.

^^^ = Too funny !!! Expected something along these lines...
My only mistresses are the sea and the wind !!!
Which probably explains a lot !!!