Subject: Vacuum Pumps
From: Paul
Date: 3/12/2000, 7:31 AM


Ken Powell wrote:
<... I plan to tap manifold vacuum to run at least an attitude indicator.
I realize that the throttle will have to be partially closed to generate a
vacuum ...>


Jim Sower wrote:

I would guess that 'inadvertent exposure' to conditions in which you need a
gyro are going to quite often require lots of power too.  Let's see now ...
I accidentally flounder into IMC at high power setting (no gyro) ... first
step is to pull off some power, then cage the gyro as it spools up ...
Naw ... I don't think so.  The tube in the exhaust w/burp valve and
accumulator seems far and away the best idea I've seen so far.  No moving
parts, more reliable than any engine driven pump, etc.
Just a theory ...         Jim S.

 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org