"Rosine, Steve" wrote:

THe primary reason for not returning the fuel to the fuel pump inlet side is
to prevent heating of the fuel, right?  If the returned fuel were cooled to
ambient, then it could be teed into the fuel supply.

 How about using a section of 3/8" OD aluminum tube which is cemented with
alum. filled epoxy into a heat sink?  Marlin P. Jones & assoc.
http://WWW.MPJA.com  carries a couple of surplus semiconductor heat sinks
8"x2.25"x5/8" and 15.5"x2.75"x2" with fins running the long dimension.
Cement the tube into one of the middle fin channels and secure the heatsink
to airframe. Maybe blow some air over it with one of MPJA's surplus fans.
Should be lighter and simpler than additional tankage.

Steve ROsine

 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

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