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[TowerTalk] Angle of maximum wind force on Yagis

To: <towertalk@contesting.com>
Subject: [TowerTalk] Angle of maximum wind force on Yagis
From: millersg@dmapub.dma.org (Steve Miller)
Date: Mon, 21 May 2001 10:53:32 -0400 (EDT)
Gene,


You are using the wrong equation.  It has been used in ham circles for a long 
time but is incorrect.

F(max) is NOT equal to W[(boom plus bracket area)(sin theta) + (element 
area)(cos theta)]

K5IU described the proper method (cross-flow principle) to determine 
aerodynamic forces on yagi antennas.
References are listed in the following TowerTalk archive post:

http://lists.contesting.com/_towertalk/199710/0321.html


Steve  N8SM/5

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