Twotikes@aol.com wrote:

Attached is a sketch of a neat dual pump system.  There are two independent
filters associated with two independent pumps.  If the pumps are both
operating then the fuel passes through them in series.  This avoids doubling
the flow if both pumps are turned on.  If either pump is shutoff or either
filter is clogged then the fuel automatically bypasses through check valves.
>From experiments I can also say that fuel pressure is maintained if either
check valve fails as long as both pumps are on.

Jeff Spitzer

Jeffs-fuel-sys.jpg

The Aircraft Rotary Engine Newsletter.              Powered by Linux.

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