PPRuNe Forums - Fuel Gravity Feeding

PPRuNe Forums (https://www.pprune.org/)

- Professional Pilot Training (includes ground studies) (https://www.pprune.org/professional-pilot-training-includes-ground-studies-14/)

- - Fuel Gravity Feeding (https://www.pprune.org/professional-pilot-training-includes-ground-studies/575034-fuel-gravity-feeding.html)

sebastian arango

20th Feb 2016 20:32

Fuel Gravity Feeding

Hi, i want to know why do I have to descent below an specific altitude when a gravity fuel feeding is to be performed, what happens to fuel at higher altutudes and how this afects the gravity feeding?

Tks

wanabee777

20th Feb 2016 23:58

Do you mean "suction" feeding??

paco	21st Feb 2016 03:56

Depending on the fuel it might boil at altitude - some helicopters have fuel boost pumps for this reason to prevent cavitation. If they fail, most flight manuals state that you have to descend below 6 000 feet. Probably not so much a factor with modern fuels, but still something to be aware of.

Phil

All times are GMT. The time now is 06:24.