Ground Ops Vocab

Question 1

Flammable

Answer 1

Easily sets fire

Question 2

Spontaneous Combustion

Answer 2

Combustion with no apparent cause

Question 3

Kindle Point

Answer 3

The lowest temperature at which the fuel will spontaneously ignite in a normal atmosphere without an external source of ignition such as a flame or spark

Question 4

Halogenated Hydrocarbon

Answer 4

Fire extinguisher type shit

Question 5

Vapor Pressure

Answer 5

The pressure exhibited by vapor present above a liquid surface

Question 6

Vapor Lock

Answer 6

A condition in which AVGAS vaporizes in the fuel line

Question 7

Detonation

Answer 7

An explosion of the fuel-air mixture inside the cylinder

Question 8

Fuel Grade

Answer 8

The grade or octane rating of aviation gasoline

Question 9

Performance Numbers

Answer 9

Lean Mix/Rich Mix

Question 9

Iso-Octane

Answer 9

A primary reference fuel for determining the octane number of gasoline

Question 10

Standard Day Conditions

Answer 10

Conditions that have been decided upon by the ICAO for comparing all aircraft and engine performance. 29.92inches of mercury

Question 11

Tetraethyl Lead

Answer 11

An antiknock agent in gasoline and jet fuels

Question 12

Volatility

Answer 12

The ability of a liquid to turn into a gas at a relatively low temperature

Question 13

Tricresyl Phosphate (TCP)

Answer 13

As an additive in lubricating oils and a plasticizer, and as a fire retardant

Question 14

Flash Point

Answer 14

The lowest temperature at which there will be enough flammable vapor to support combustion when an ignition source is applied.

Question 14

Manifold Pressure

Answer 14

Gauge in an airplane measures the pressure of the fuel/air mixture within the intake manifold of the engine.

Question 15

Chamois Skin

Answer 15

Used to filter fuel that has been stored in drums, which often allow water in, or from other doubtful storage source.

Question 16

Underground Fuel Hydrant

Answer 16

Underground fuel distribution system

Question 17

Bayonnet-Type Fuel Nozzle

Answer 17

A type of nozzle used for pressure or single-point fueling. The nozzle is connected into an aircraft receptacle and the handle is turned to lock the nozzle in place

Question 18

De-Icing

Answer 18

A critical maintenance process of removing snow, ice, or frost from an aircraft’s surface

Question 19

Anti-icing

Answer 19

Systems designed for activation before the aircraft enters icing conditions to prevent the formation of ice.

Question 20

Reciprocating Engine

Answer 20

Engines that operate on the basic principle of converting chemical energy (fuel) into mechanical energy

Question 21

Flooded Engine

Answer 21

An internal combustion engine that has been fed an excessively rich air-fuel mixture that cannot be ignited

Question 22

Hydraulic Lock

Answer 22

A condition in which a volume of liquid, equal to or greater than the clearance volume of the combustion chamber, is drawn into the cylinder during starting

Question 23

Internal Supercharger Drain Valve

Answer 23

A pressure-operated valve in the bottom of the internal supercharger section of a reciprocating engine that is open when the pressures inside and outside

Question 24

FOD (Foreign Object Damage)

Answer 24

Foreign Object Damage

Question 25

Hot Start

Answer 25

An excessively rich fuel/air mixture entering the combustion chamber casuing the engine to start but the exhaust gas temp exceeds limits,

Question 26

Hung Start

Answer 26

The result of insufficient power to the starter causing the engine to start normally but the rpm remaining at a low value