[Drake] Cooling fans - blow in or out?

[Anthony W. DePrato]

>
>If you want to actively cool a component surface, you need to blow onto it.
>Air naturally follows a path of least resistance. Air sucked into a fan
>tends to have a neat, ordered flow and will skirt round components, leaving
>a thin layer of stagnant air right on the surface. Air coming out of the fan
>blades has a lot of turbulence, and it's this that breaks up the stratified
>flow and gets moving air in contact with the component surface.
>
>Steve
Yes but does this not also make hot spots on the back side of the tubes.. 
seems like a study was done years ago about cooling transmit tubes with 
side mounted fans.. and tests showed that a hot spot showed up on the back 
side of the tube away from the fan.
air sockets came about for this reason. I alway put the fan on top of all 
six of my c-line transmitters during contest.
correct me if i am wrong about this study.
73 Tony



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