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15.21 Altitude Profile Task (APT)
15.21.1 Competitors will attempt to achieve the greatest time within a set airspace. The airspace is defined by one or two bands around a given altitude profile where the time within the inner band counts 2x, the time within the outer band counts 1x and the time outside the outer band does not count. The task will be started with an electronic mark.
15.21.2 Task data:
a. description of set airspace(s) (see sketch)
15.21.3 The result is the accumulated time in the set airspace(s). Greatest result is best.
Breakdown
Breakdown
The APT is the newest task added to the rulebook. The goal of the APT is to fly as closely to the defined path as possible. It judges this path purely based on vertical position, with no consideration for horizontal position.
This is a time based task, meaning that it measures the altitude position at each time in the profile, and uses that result compared to the expected result to determine the score.
There are two layers in this task, each layer being treated as a plane. The "A Layer" is the optimal result, with a distance off from the target. In this layer, time is counted as double. The "B Layer" is outside of the "A Layer" with a set distance. In this layer, time is counted as 1x. The maximum accumulated time wins.
The image on the left is from the AXMERs (Rulebook). It shows the scoring regions.
Task Data Description
Task Data Description
Task data:
description of set airspace(s) (see sketch)
This tells the pilots how the scoring layers are configured. It will almost always be a sketch as shown above.
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