# Circoflex Kite Information

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### Circoflex Information Found Here...

Original Circoflex Plan (English)
Circoflex Hints and Tips (including bridle calculations)
Mini-Circoflex Plan (make a smaller 3 to 4 meter circoflex)
Anthony's Circoflex Construction Notes
Cover for a large 12 meter Folded Circoflex
Internet Photos of Circoflexi and Responses Recieved
Bridal Line Calculator (java script)

### Other Circoflex Information...

Circoflex Plan Revisited (by Gary Engvall)
Plan to construct a 20 foot, ripstop circoflex
A Garbage Bag Circoflex by Andrew Kinsman
It's more of a tube kite than a circoflex!
Original Circoflex Plan (French)
The Virtual Kite Zoo, on Circoflex Kites

Here are some of the comments I have recieved or seen floating about for circoflex kites. Prehaps you like to help add a few more!
• Looks like a cookie cutter making holes in the wind!
• Looked like a giant bubble from out at the point (2 km away)
• Is it filled with gas?
• Where is the string?
• Can I fly my kite though the middle?
Some fool tried to do this on my prototype too!
• Looks like a stargate! -- Judge at Australian Festival of Winds, 1998
• The ULTIMATE in vented kites! Hahahahah...
It's just a big HOLE with some fabric wrapped around it
-- Stan... aka Bofh <bofh@hellcent.com>

### How does it fly!

If you look at the mini-circoflex kite photo to the left, you will see that the kite actually leans back slightly. Often this is so slight it is not noticable, especially on the full sized normal versions. Because of the lean, lift is attained.

To keep the kite in this position, a small amout of `ballast' weight is added just inside the trailing edge of the lower side (black section of the kite in the photo). Without this ballast the kite will fly upside down (which you can only do of a bridge) , as there is more weight above the bridle point than below.

As in basically all kites, the bridle is also off center, just as it would be in a typical box kite, though this is often invisible from the ground.

To make sure it keeps its circular shape a spar is inside the leading edge. And to stop the fabric from `rippling' like a flag in the wind, a line in the trailing edge (leech line) makes the rear edge a centimeter or so smaller in diameter. As such the wind is restricted slightly, and a slightly higher air pressure is on the inside the ring than outside, puffing out the fabric.

Created: 15 May 1997
Updated: 19 November 1999
Author: Anthony Thyssen, <A.Thyssen@griffith.edu.au>