PPRuNe Forums - View Single Post - american a321 accident charlotte aug 15 2015
Old 4th Jul 2020, 02:25
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RatherBeFlying
 
Join Date: Sep 2001
Location: Toronto
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Miscellaneous parameters in Figure 9 show 2D wind direction and speed. The acceleration spikes seem to be a result of ground contact. Vertical speed goes from - 600 to - 1200 fpm in the few seconds before touchdown while the 2D wind flops around. Alpha is not shown in the FDR report. It could be interesting.

See Flight in Low-Level Wind Shear, Frost 1983 for equations with 3D wind components.
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