Comments on: Winds Aloft Calculation http://www.dannyvacar.ca/blog/winds-aloft-calculation/ Adventures in the air, on the ground and in between Mon, 16 Jan 2012 21:10:12 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Michelle http://www.dannyvacar.ca/blog/winds-aloft-calculation/comment-page-1/#comment-16761 Michelle Wed, 17 Nov 2010 19:46:59 +0000 http://www.dannyvacar.ca/blog/?p=1775#comment-16761 The question is testing if you can read the winds aloft correctly and if you understand that they are always reported in degrees true. Answers 1 and 3 are wrong because the winds are reported as magnetic. Use the 6000 feet values, which are close enough to the flight altitude 5,500 feet. Average winds are approximately an average of 28 kts @ 270 degrees and 32 kts @ 310 degrees true Answer 4 cannot be correct because it's 310 degrees. Answer 2 remains, and makes sense because 290 degrees is halfway between 270 degrees and 310 degrees and 30 kts halfway between 28 kts and 32 kts. The question is testing if you can read the winds aloft correctly and if you understand that they are always reported in degrees true.

Answers 1 and 3 are wrong because the winds are reported as magnetic.
Use the 6000 feet values, which are close enough to the flight altitude 5,500 feet.
Average winds are approximately an average of 28 kts @ 270 degrees and 32 kts @ 310 degrees true
Answer 4 cannot be correct because it’s 310 degrees.
Answer 2 remains, and makes sense because 290 degrees is halfway between 270 degrees and 310 degrees and 30 kts halfway between 28 kts and 32 kts.

]]> By: Frank Ch. Eigler http://www.dannyvacar.ca/blog/winds-aloft-calculation/comment-page-1/#comment-8174 Frank Ch. Eigler Fri, 28 May 2010 13:42:11 +0000 http://www.dannyvacar.ca/blog/?p=1775#comment-8174 What an unfortunate question. In practice, the inaccuracies of the measurements and the unreality of the linear interpolation assumption will render the difference between 290/30 and 310/31 absolutely moot. What an unfortunate question. In practice, the inaccuracies
of the measurements and the unreality of the linear interpolation
assumption will render the difference between 290/30 and 310/31
absolutely moot.

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