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Question 1

most turbine oil is compatible with other oils that meet the same military specification.

Answer 1

Compabilty

Question 2

essential for the life of engines with carbon seals that lubricant properties prevent wear of the carbon at the carbon seal face

Answer 2

Seal wear

Question 3

has a relatively low maximum vapor pressure compared to automotive gasoline, only 7 psi.

Answer 3

AVGAS

Question 4

these are chelating agents and chemical compounds

Answer 4

Meta deactivator

Question 5

can be added to the bulk fuel and also directly into the aircraft fuel tank, usually during refueling.

*These are basically diethylene glycol solutions that work as antifreeze.

Answer 5

Fuel anti ice additives

Question 6

engines store the lubricating oil in the engine proper

Answer 6

Wet sump

Question 7

engines utilize an external tank mounted on the engine or somewhere in the aircraft structure near the engine, similar to reciprocating piston engines mentioned earlier.

Answer 7

Dry sump

Question 8

Reffered to as secondary airflow

Answer 8

Air cooling

Question 9

Although the dry-sump systems use an oil tank that contains most of the oil supply, a small sump is usually included on the engine to hold a small supply of oil

Answer 9

Oil tank

Question 10

designed to supply oil under pressure

Answer 10

Oil pump

Question 11

discharge side of the pump limits the output pressure of the pump

Answer 11

A regulating relief valve

Question 12

they remove foreign particles that may be in the oil.

Answer 12

Turbine oil filter

Question 13

type system that keeps the pressure fairly constant.

Answer 13

Oil pressure regulating valve

Question 14

A relief valve is used to relieve pressure only if it exceeds the maximum limit for the system.

Answer 14

Oil pressure relief valve

Question 15

measures the pressure of the lubricant as it leaves the pump and enters the pressure system.

Answer 15

Oil pressure gauge

Question 16

used to remove excess air from the bearing cavities and return the air to the oil tank

Answer 16

Breather subsystem

Question 17

prevent reservoir oil from seeping (by gravity) through the oil pump elements and high-pressure lines into the engine after shutdown.

Answer 17

Check valve

Question 18

are included in oil systems using an oil cooler.

Answer 18

Thermostatic bypass valve

Question 19

are used in the lubricating systems of some turbine engines to reduce the temperature of the oil

Answer 19

Air coolers

Question 20

acts as a fuel oil heat exchanger in that the fuel cools the hot oil and the oil heats the fuel for combustion

Answer 20

Fueled cooled oil cooler

Question 21

used in the oil system to detect and catch ferrous (magnetic) particles present in the oil.

Answer 21

Magnetic chip detector