[TowerTalk] Formula?

[Tod Olson]

>From Chris, ZS6EZ --
" I'm looking for the proportionality constant (c) that relates
wind
speed (v) and antenna surface area (A) to the lateral force on
the
antenna (F), i.e. F = cAv.
Any ideas, please? "

********************

In the August Ham Radio, 1974, page 18 the formula

P=0.004 (V)^2   <<(V)^2>> is V squared

is given as the EIA Standard RS-222-B

where P is pounds per square foot and V is wind velocity in miles
per hour. The 0.004 in this formula is said to include a gust
factor and a drag coefficient for flat surfaces.

The exponent (^2) is a function of wind velocity however, and the
value "2" is considered to be good average value for the velocity
range 30-100 miles per hour.

Tod Olson, K0TO



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