Contact   Imprint   Advertising   Guidelines

Hot Air Balloon Effect in Foil Kites

For all foil kite riders
Very Frequent Poster
Posts: 960
Joined: Thu Jul 31, 2014 2:58 pm
Kiting since: 2002
Local Beach: France: St Laurent du Var, Cannes, Almanarre
Style: 62 kg , light wind
Gear: Conceptair pulsion 15&12&.369 , Elf 11 &7, OR Flite 10m , Airush One 9&6, Rally 6&4.
foil Ketos, Zone, OR mako, snowskis, kite-boat
Brand Affiliation: None
Has thanked: 12 times
Been thanked: 11 times

Re: Hot Air Balloon Effect in Foil Kites

Postby Regis-de-giens » Wed Sep 07, 2016 2:44 pm

Indeed : "total weight" is the weight of the totality of air in the kite, without kite itself ;
- for inertia issues (like reactivity to change direction), you need to do 5611+2150 = 7771 grams
- but for ability to fly at the zenith which is the topic here, you should take only the kite weight of 2150 gram (since Archimede's upward force will compensate for air weight)

User avatar
Very Frequent Poster
Posts: 5292
Joined: Fri Jul 16, 2010 6:27 am
Kiting since: 2010
Local Beach: ford lake Michigan
Gear: slingshot liquid force wainman pansh naish north cwb burton ronix rpm ozone
Has thanked: 3 times
Been thanked: 20 times

Re: Hot Air Balloon Effect in Foil Kites

Postby edt » Wed Sep 07, 2016 3:02 pm

sounds good. Does seem like a big enough effect to help keep the kite aloft on light wind days.

Very Frequent Poster
Posts: 2457
Joined: Sun Aug 23, 2015 3:20 am
Kiting since: 1337
Local Beach: Ventura Beach
Favorite Beaches: Tarifa
Style: Airstyle
Gear: Foils
Brand Affiliation: None
Has thanked: 3 times
Been thanked: 3 times

Re: Hot Air Balloon Effect in Foil Kites

Postby foilholio » Wed Sep 07, 2016 3:27 pm

edt wrote:you can of course feel all of the air in the kite that's why the foils turn so slow
It's one reason. Some others are lack of rigidity, the shape, bridles, bar input. For foils that change projected area like the pyscho4 they can turn pretty quick. It's actually the same/similar trick many inflatables use to turn quick, but they reduce PA when sheeting in vs increasing it like the pyscho4. Because the TE on an inflatable is unsupported it naturally wants to arc more when tension is applied.

Return to “Foil Kites”

Who is online

Users browsing this forum: james and 3 guests