DT 17 - Boomerang

Official description

Judges will particularly consider

• Parallel lines
• ½ Axels
• Arcs
• All kites following in a straight line while in downward vertical flight,
• Relative placement of the components
• Synchronicity of execution

Explanation

Kites enter from opposite sides of the wind window as indicated, executing a ½ axel at centre of the window and continue into an arc. At the highest point of the arc all kites execute a sharp turn into downward vertical line. On reaching the point where the ½ axel was initiated, each kite executes a sharp 90 degree turn as indicated. The line of exit should effectively be a continuation of the original line of entry.

Our reading

What follows is our reading of those documents, not an official document: the diagram and the description above are what counts.

Animation

Sequence

1. forward flight
2. half axel
3. green, blue : counter-clockwise arc, forward · red, magenta : clockwise arc, forward
4. green, blue : 90° counter-clockwise turn · red, magenta : 90° clockwise turn
5. forward flight, nose down
6. green, blue : 90° clockwise turn · red, magenta : 90° counter-clockwise turn
7. forward flight