If I understand what you said, your sump tank would buy you about 3.2 minutes of flight at cruise FF. Worth it? Bottom line is you are limited by the unusable fuel in the Cozy tanks ( in uncoordinated flight). The sump tank won't fix that.
Tracy
Sent from my iPad
Please explain drawbacks?
In canards we have small sumps up against the fuselage to more or less
provide a low spot for access to fuel. They have been known to run dry when fuel
is down to gallons and fuel is sitting mostly in leading edge.
More importantly in a canard pusher a sump canister closer to the engine
can significantly reduce the size and run of the high pressure fuel circuit.
In uncoordinated flight the high rate of flow of the EFI circuit could pump
a small sump dry and return the fuel to the main part of the tank where it would
not be returning to the sump in use. The sump or surge tank could avoid
this.
Chrissi &
Randi
www.CozyGirrrl.com
CG
Products, Custom Aircraft Hardware
Chairwomen, Sun-N-Fun Engine Workshop
In a message dated 9/1/2011 5:41:09 P.M. Central Daylight Time,
rwstracy@gmail.com writes:
Sumps can work but frequently require fixes for their drawbacks.
If you don't have a really good reason for needing one, why use
one?
Tracy
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