Fuel Systems Flashcards
What do the numbers in avgas stand for?
The anti-detonation characteristics of the fuel
What is vapor lock?
The fuel inside a fuel line begins to evaporate and can then form air bubbles
Two types of fuel systems
gravity and pressure systems
What must the minimum fuel flow rate of a gravity feed fuel system be?
At least 150% of take off fuel requirements
Types of fuel tanks
- Built-up tanks
- Bladder tanks
- Integral tanks
Each fuel tank mus have an expansion space of?
Not less that 2% of the tank capacity
What is an integral tank?
Pare of the aircraft structure is used as a fuel tank aka wet wing
Baffle plates
Used to control fuel surging
Flapper valves
check valves used to control fuel flow inside fuel tanks and help keep pumps primed
Why is sumping important
removes any accumulated water since it slowly settles to the bottom of the tank
What must each tank filler be marked with?
type of fuel and minimum grade
Vapor pressure
the pressure of the air above the liquid that is needed to keep the liquid from evaporating
Cross-feed valves
allow running engines from any tank in case of fuel system failure
Two types of fuel pumps
electric or engine driven
Fuel heater can be?
air-to-fuel
oil-to-fuel
