Airframe 10 (Fuel System)

What is a gascolator?**. A fuel pressure regulator. A fuel strainer/water trap. A fuel vapor separator.

Why are flapper valves used in fuel tanks?. To prevent fuel aeration. To keep fuel at the pickup. To stabilize fuel temperature.

What is used to allow fuel to expand in a fuel tank due to temperature changes?. A pressure relief valve. A vent/air space. A thermal bypass line.

What would a plugged fuel tank vent cause?. Excess fuel pressure. Fuel starvation. Fuel cross-feed issues.

Why is water more of a problem with turbine fuel than it is with aviation gasoline?. It corrodes turbine blades. It can freeze. It reduces lubrication properties.

What has a higher vapor pressure: aviation gasoline or automotive gasoline?. Aviation gasoline. Automotive gasoline. Both have similar vapor pressure.

What two words must be located near the fuel tank filler hole?. Capacity and pressure. Fuel type and grade. Vent type and tank number.

What color is 80/87 fuel?. Orange. Red. Purple.

What color is 100 LL fuel?. Blue. Yellow. Green.

What color is 100/130 fuel?. Brown. Green. Clear.

How much expansion space must be provided in an aircraft fuel tank?. About 1%. About 2%. About 3%.

What two pieces of information must be provided around the filler opening of an aircraft fuel tank?. Grade and capacity. Temperature and pressure. Volume and venting method.

What type of fuel is Jet B?. Heavy kerosene jet fuel. Wide-cut jet fuel. Synthetic blend jet fuel.

What is meant by an integral fuel tank?. A tank mounted externally. Sealed aircraft structure tank. A tank isolated from the wing structure.

Why are integral fuel tanks used on aircraft?. Improves fuel economy. Saves weight, adds volume. Reduces contamination risk.

What are two uses of the additive Prist in turbine fuel?. Anti-foaming and corrosion prevention. Anti-ice and biocide. Stabilizer and detergent.

Where in a fuel tank are boost pumps located?. Near the filler neck. At the lowest point/sump. At the highest point for vapor removal.