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Icaro Laminar 13 MRX: Difference between revisions
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→Gust directly from above
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==== Gust directly from above ==== | ==== Gust directly from above ==== | ||
In the following, the 6th sequence in the video (t=1:52) will be analyzed: Gust directly from above (-90°). | |||
The negative angle of attack due to the gust initially only leads to a harmless `wire slap`. The hang glider is pitching up slightly. However, the sink rate increases (see vario) as there is no lift for a while. Up to this point, everything is pretty safe. | |||
Only afterwards it becomes interesting: Why does the hang glider is pitching down so rapidly? | |||
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The timing of the gust in this example is just such that the gust begins to decay after 2.5s, which corresponds to a gust directly from below (+90°). The inflow velocity is added to the already high sink rate (-5m/s) at this time. This means that there is a high inflow velocity at a high angle of attack. This must inevitably lead to a violent pitch-down! | |||
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It can also be seen in a positive light: The '''`wire slap` is the alarm for pulling in'''! Depending on the duration of the gust, the pitching down may not be so strong, however it could occur. You are therefore on the safe side by pulling in. | |||
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There is a (short) prewarning time for gusts from above. Unfortunately, this is not the case with gusts from below. | |||
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