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From: Walter Atkinson <walter@advancedpilot.com>
Subject: Re: [LML] Plenum cooling
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Mark:

As the air slows down (as the area increases), the **pressure**=20
increases.  Increased pressure is what helps the air go through the=20
fins to the area of low pressure below the cylinders.   Does that help?

Walter


On Oct 18, 2004, at 8:32 AM, Mark Ravinski wrote:

This science of making a larger volume chamber under the cowling=20
confuses me.
The air in this chamber isn't doing anything useful.=A0 The volume as =
the=20
air is passing the cylinder cooling fins may be what's important.=A0 If=20=

the air expands and cools above the engine but speeds up and heats up=20
as it goes past the cylinders, have we gained anything?
=A0
As confused as ever
Mark Ravinski
N360KB 1305 hrs.

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Mark:


As the air slows down (as the area increases), the **pressure**
increases.  Increased pressure is what helps the air go through the
fins to the area of low pressure below the cylinders.   Does that
help? =20


Walter



On Oct 18, 2004, at 8:32 AM, Mark Ravinski wrote:


<fontfamily><param>Arial</param><smaller>This science of making a
larger volume chamber under the cowling confuses =
me.</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>The air in this chamber isn't
doing anything useful.=A0 The volume as the air is passing the cylinder
cooling fins may be what's important.=A0 If the air expands and cools
above the engine but speeds up and heats up as it goes past the
cylinders, have we gained anything?</smaller></fontfamily>

=A0

<fontfamily><param>Arial</param><smaller>As confused as =
ever</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>Mark =
Ravinski</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>N360KB 1305 =
hrs.</smaller></fontfamily>


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