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==== Example of a gust from behind ==== | |||
If a gust comes from behind, the wind noise must decrease. This can be `heard` in the next video example (turn the volume up!). At first, the wind noise decreases to almost nil. Only then the hang glider starts to pitch down. | |||
The '''wind noise''' can therefore be a further '''alarm signal for pulling in'''. | |||
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Note that here the pilot also rotates around the control bar and hence his center of gravity does not move backwards. | |||
{{#ev:youtube|https://youtu.be/u-TPfaPIdUQ | 500 | inline | Turbulence - Thermalling in Greifenburg, Austria, May 3rd, 2012 - Offene Hessische Meisterschaften|frame|start=15&end=30&loop=1}} | |||
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There is a (short) '''prewarning''' time for '''gusts from above''' and '''from behind'''. Unfortunately, this is '''not the case with gusts from below'''. | |||
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The above examples apply to gusts at low flight speeds. | |||
As already mentioned, at high flight speeds the influence of gusts is less severe. | |||
Below are two examples: | |||
{{#ev:youtube|https://youtu.be/seCr0SS2GyE | 500 | inline | with Atos Hangglider in violent turbulence in Gnadenwald / Austria|frame|start=22&end=44&loop=1}} | {{#ev:youtube|https://youtu.be/seCr0SS2GyE | 500 | inline | with Atos Hangglider in violent turbulence in Gnadenwald / Austria|frame|start=22&end=44&loop=1}} | ||
{{#ev:youtube|https://youtu.be/MVtX1V_R5gQ | 500 | inline | No Hands|frame|start=0&end=21&loop=1}} | {{#ev:youtube|https://youtu.be/MVtX1V_R5gQ | 500 | inline | No Hands|frame|start=0&end=21&loop=1}} | ||
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Scary but not dangerous at all! | |||
Scary but not dangerous at all! At least as far as pitch stability is concerned. Structural integrity is a different story. | |||
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