Air exit vent with engine box?

I'm trying to visualize where the fuel tank is that requires routing
fuel lines under the seat pan to get to the engine bay.* The engine
bay is aft of the wing, isn't it?* Where's the fuel carried?



I'm guessing the pilot wants a cut-off available; if you have multiple tanks (wing tanks), you also have to be able to switch tanks...

Am Mittwoch, 25. November 2015 16:33:41 UTC+1 schrieb Dan Daly:
I'm trying to visualize where the fuel tank is that requires routing
fuel lines under the seat pan to get to the engine bay.* The engine
bay is aft of the wing, isn't it?* Where's the fuel carried?

The electric fuel pump is seated under the seat pan, so the fuel gets routed there, and then through the shut-off underneath the wing spar connection on to the engine. The fuel tank is underneath the wing spar connection.

Now why exactly this pump is located under my left leg, I have strictly no idea. Maybe the intention is to have it at a relatively low spot with regard to the tank, and in this case there are no other spots left.

Bert
Ventus cM TW

Thanks, but wouldn't it be simpler and safer to have the electric pump
in the engine bay along with an electrically operated shutoff valve?
They could be wired such that the shutoff switch would also disable the
pump and the ignition. Surely there's a corner where those things could
be located. I'm sure the designers had their reasons...

On 11/25/2015 8:47 AM, Tango Whisky wrote:
Am Mittwoch, 25. November 2015 16:33:41 UTC+1 schrieb Dan Daly:
I'm trying to visualize where the fuel tank is that requires routing
fuel lines under the seat pan to get to the engine bay. The engine
bay is aft of the wing, isn't it? Where's the fuel carried?
The electric fuel pump is seated under the seat pan, so the fuel gets routed there, and then through the shut-off underneath the wing spar connection on to the engine. The fuel tank is underneath the wing spar connection.

Now why exactly this pump is located under my left leg, I have strictly no idea. Maybe the intention is to have it at a relatively low spot with regard to the tank, and in this case there are no other spots left.

Bert
Ventus cM TW


--
Dan, 5J

At 15:58 25 November 2015, Dan Marotta wrote:
Thanks, but wouldn't it be simpler and safer to have the electric pump
in the engine bay along with an electrically operated shutoff valve?
They could be wired such that the shutoff switch would also disable the
pump and the ignition. Surely there's a corner where those things could
be located. I'm sure the designers had their reasons...

--
Dan, 5J

It seems odd to me that the pump is external, almost everything in Europe
from ride on lawnmowers to SUV's have the pump IN the fuel tank, this cuts

down on piping, also it allows for a twin pipe flow & return system to give
a
constant fuel pressure for more consistent engine performance.
The other big advantage is if the pump develops a leak then the fuel just
returns to the tank rather than the cockpit.
Also I would expect any exposed flexible fuel lines to be stainless steel
braided.
Just my ha'penny worth.
Ben.