Fuel management

[Oldfox]

Hi there!

 

Enjoying being back on warbirds after some time on jets, but I have some questions about the fuel management of the Spit.

 

I looked at Chuck's guide and it doesn't seem to work as expected, or maybe I missed something?

 

When climbing high I would be expecting the low pressure light showing and this would be solved by using the "pressurize tank" cock.

 

Instead of that the engine just shut down without any warning and the pressurize tank cock moved to ON doesn't solve anything. In fact I can only get the engine back using the electrical fuel pump.

 

So is this the normal use of that fuel pump? Getting fuel to the engine at high altitudes?  And so what is the function on the pressurize tank cock?

 

Thanks!   

 

 

 

Edited December 14, 2020 by Oldfox

[saburo_cz]

The fuel tank "pressure system" does not provide sufficient pressure to re-gain lost pressure (when yellow light is on). So the wooble hand pump or el. booster pump must be used to re-gain pressure. (do not know if it was IRL or it is only DCS feature)

 

To avoid it, switch ON the "pressurize tank" cock before you reach altitude when fuel pressure will be lost or left el. booster pump ON during whole flight except part when you fly on fuel from the external fuel tank, if is used.

Edited December 14, 2020 by saburo_cz

[Oldfox]

Roger!  Seems to work exactly as you described indeed, thanks!

 

Would the electric pump force the fuel to be taken from internal tank only?

[saburo_cz]

Yes, the electric pump is there only to draw fuel from internal fuel tank.