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Re: Do the large higher yaw drag savings seen in the wind tunnel transfer to the real world? [AlexS]
How silly of me. I coded to only look for wind angles greater than 10 degrees, but did not include angles less than -10 degrees. So the results simply double (I changed the plot in the above post to reflect this).
Keep in mind, this plot is based on equal probability of wind occurring from any direction (reasonable assumption as any I suppose).
Some reference line plots are shown for different wind speeds that commonly occur. With a ground speed of 30kph, and wind of 5kph, there is no possible way to obtain a yaw angle above 10 degrees. That same ground speed with a 10kph wind, produces a yaw angle greater than 10 degrees at >65% of all possible wind angles. If on average, wind is experienced in all directions with equal probability, it would seem that the % values can be stated at time values. More than 65% of the time when you are traveling at 30kph with a wind of 10kph, your wind angle experienced will be greater than 10 degrees (as an example).



Chris Morton, PhD
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Last edited by: AeroTech: Mar 8, 18 14:19

Edit Log:

  • Post edited by AeroTech (Cloudburst Summit) on Mar 8, 18 14:16
  • Post edited by AeroTech (Cloudburst Summit) on Mar 8, 18 14:19