Ok - so I had a brain fart - decided to share.
Problem - wind too light, kite (LEI) too heavy to fly .
What if - you filled it all with helium...
Free idea - if someone makes money off of this, give some of it to charity and I'll be happy - I'll also buy the kite!...
well, if you are so inventive, why didn't you check this Forum on searchword "helium
you'll be surprised how many "inventors" reached this solution before you.
only problem they were not good at physics.
suppose litewind kite 14sqm weighs 3.5kg (8.75lb)
-density of air at sea level is about 1.2 g/l
-density of helium
is 0.18 g/l
so, suppose your kite has in total (exaggeratedly) 200l of air in its bladders, it would make a difference of just 1 gramme per liter or 200g(7oz) per kite!
by this numbers you'll need a 3.5m3 of extra space to contain a volume of a helium
enough to zero the kite's weight. so it takes a ca 18 times more volume than the original bladders volume. this volume needs containers with their weight, so the quantity of helium
is even more then that.
and to fans of hydrogen, it is more buoyant than the helium
for just 7%. and it is highly flammable.
why don't you search for "helium
" in the Forum before you start asking questions that might embarrass you?