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15.11 ELBOW (ELB)
15.11.1 Competitors will attempt to achieve the greatest change of direction in flight.
15.11.2 Task data: (If no markers are used)
a. description of track point "A"
b. description of track point "B"
c. description of track point "C"
15.11.3 (see section IV events with observers)
15.11.4 The result is 180 degrees minus the angle ABC. Greatest result is best.
Breakdown
Breakdown
The elbow is a relatively simple task. It requires the greatest change in direction between three points. In modern ballooning, these points are traditionally denoted with logger marks.
A common characteristic of the Elbow is its pairing with other tasks, like a FON. This adds an element of strategy in the placement of the fly on, because the optimal elbow result means that the pilot must have either as much left or as much right as possible, which affects the direction of the elbow.
See the diagram at the left for a photographic description of the Elbow.
Because a greater change in direction will result in a lower angle (overlapping A and C points leads to a 0 degree angle), the result would be 180. This means that the greatest result is best with a maximum of 180.
Task Data Description
Task Data Description
Task data: (If no markers are used)
description of track point "A"
Tells the pilots what will be considered as their A mark, as well as any conditions on that point. This could be a time or distance constraint such as 10 minutes after the previous mark or 3 km between logger marks.
description of track point "B"
Tells the pilots what will be considered as their B mark, as well as any conditions on that point. This could be a time or distance constraint such as 10 minutes after the previous mark or 3 km between logger marks.
description of track point "C"
Tells the pilots what will be considered as their A mark, as well as any conditions on that point. This could be a time or distance constraint such as 10 minutes after the previous mark or 3 km between logger marks.
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