Todd Carrico wrote:

If you vented the header tank to the wing tanks, your vapor would have a
place to escape, and excess fuel if something were to plug up.  However,
you could end up with transfering fuel from one tank to the other and
over filling it!

In the event of a rollover, you would have fuel coming
from the wing tank vents.  I suppose you could install a gravity type check
valve in the vent line.

The AeroCanard vent lines actually run from one side of the AC, up to the
highest part of the firewall, and down to the opposite side.  They exit
lower than the fuel tank, which ends up being the high spot if a rollover
were to take place.  The header tank has a burp line used to initialize the
tank.

For the record, I am building a COZY/AeroCanard.

tc

If you U shape the vents you might get a syphon going.
I think it might be better to install a gravity ball check valve.

Paul Lamar
 
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