<table><tr><th>From:</th><th>jeffrey E. &lt;jeevacation@gmail.com&gt;</th></tr><tr><td>Sent:</td><td>Tuesday, December 1 2015 8:47 PM</td></tr><tr><td>To:</td><td>Larry Visoski</td></tr><tr><td>Subject:</td><td>Re: Fun</td></tr></table>

so if the voltage is jumping around is the precooler=valve opening and closing widly.

> wrote:

From Pete

Sent from my iPhone

Begi= forwarded message:

Email communication:

*   **From:** Pete Rawson
*   **To:** Larry Visoski
*   **Date:** December 1, 2015, 1:38:14 PM AST
*   **Subject:** RE: Fu=

Hi La=ry,

The answers to the questions from JE =nd you are;

The dorsal allows ram air to =ormally go through the left and right heat exchangers. The= are part of the air cycle machines, nothing to do with the precoolers. There are no components, the only change in flow is speed of =he aircraft. It also allows ram air to enter the cabin whe= "Ram" is selected- part of the emergency pressurization

system.=/span>

The air cycle machines "Packs" then work the tem=erature for the cabin.

pylon-That The overboard is the fan air air that =rom goes the through the p=ecooler valve, and across the pylon radiator. mean-Low open-Air The flows=across panel voltage, re=dings should the also pylon have radiator low pressure and cools ind=cation- the input air That to allows the temp the system. precooler valve to

close-No High air voltage, across the should pylon=radiator. also have high pressure- =hat causes the precooler to

Each side is separate, both in =ontrol and function.

See you tomorrow-<pan>

Regards,

Pete

-----Original Message-----
From: Larry Visoski
Sent: Tuesday, December 01, 2015 9:01 AM
To: Pe=e Rawson
Subject: Fun

What does dorsal fin do on the G4, I know in the G2=it provided emergency pressurization

Sent=from my iPhone

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