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18th October 2021 | 21:46

#4 (permalink)

safetypee

Joined: Dec 2002

Posts: 2,775

Likes: 353

From: UK

I am not familiar with the A320, but previous discussions suggested lag / filter, or smoothing delays of up to 30 sec. This provided a reasonable estimate of average wind speed; and although instantaneous wind can be quickly accessed, it may not be ‘now’, nor consider gusts.

“Wind speed and wind direction are available parameters in FDM data that are calculated in FMS. However these parameters cannot be used for analysis because it is known that FMS wind has a velocity bias of several knots, and a direction bias of several degrees. These deviations are caused by inaccuracies in the calculation of the drift angle, from the aircraft sensor data.”

https://www.futuresky-safety.eu/wp-c..._D3.4_v2.0.pdf

related:-

https://core.ac.uk/download/pdf/53034171.pdf

https://core.ac.uk/download/pdf/53034581.pdf

https://www.skybrary.aero/bookshelf/books/2069.pdf

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