MI 02 - Ladder Up (Experienced)

Compulsory figure from the series Multi-line individual figures.

Reference diagram

MI 02 - Ladder Up (Experienced)

Official document: ISK Compulsories Book v3.0, p. 71

Official description

Judges will particularly consider

  • Rotation
  • Position within the precision grid
  • Relative placement of components
  • Parallel lines

Explanation

  • The kite rotates forward around one wingtip after the other as it climbs.
  • The 1st rotation is counter clockwise, the 2nd clockwise, the 3rd counter clockwise, and the 4th clockwise.
  • The position of the kite after each rotation is determined by the width of the kite. Therefore, the vertical position of the kite at the end of each rotation and the last horizontal line are undefined.

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

Doubts & discrepancies

Uncertain readings of the diagram or the official text, and disagreements between sources, to be validated. The animation follows the reading we chose, which is not an official interpretation.

No specific doubt or discrepancy about this figure.

Common to the whole family of figures

  • douteOverall speed: we chose a constant speed of 15 units per second (about 4.4 m/s with 37 m lines), without any flight measurement. The ISK requires a constant speed (§II.V) without giving a value.
  • douteKite size: our assumption is a wing 2.30 m wide, i.e. 8 grid units (1 unit ≈ 0.29 m with 37 m lines), with the proportions of the Hadzicki wing drawn in kite-physics; the dual-line wing has the same span. For the reference competition, we only found the scale of the grid (ISK §II.C: about 0.3 m for 38 m), not a kite size. At this size, the wings of a team overlap at times (MT 01, 02, 06 and 09). Lead: a smaller kite.
  • douteWe added a brief stop (0.25 s) before and after each rotation on the spot, and at each corner where the wing goes from one translation to another with a different leading-edge orientation. It does not appear in the list of steps, and the rules do not ask for it: they only mention the stops marked on the diagram or cited in the text.

Keep going

In the series Multi-line individual figures

  1. MI 02 - Ladder Up (Experienced) — you are here
  2. MI 03 - Steps and Turns (Master)
  3. MI 04 - Two Down (Experienced)
  4. MI 07 - Arc Circle (Master)
  5. MI 08 - Camel Back (Master)
  6. MI 09 - Clock Tower (Master)
  7. MI 13 - Z Pass (Experienced)

All 29 figures of the discipline

Elsewhere on the site

How to read ISK figures

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