Book 3 - Engine Fuel Control Flashcards
engine fuel control is provided by three levers in the flight deck:
- the HPSOV or HP ____ which is is an __/OFF valve which is used to open or close the fuel supply to the engine during _____ up and _____ down
- the ________, which is used to control fuel flow to engine, thus allowing the pilot to control engine _____. often the HP cock and throttle are ________ in one lever
- the LPSOV or LP ____ which is used to isolate the engine fuel system from the ________. used mainly by _________ during maintenance
engine fuel control is provided by three levers in the flight deck:
- the HPSOV or HP COCK which is is an ON/OFF valve which is used to open or close the fuel supply to the engine during START up and SHUT down
- the THROTTLE, which is used to control fuel flow to engine, thus allowing the pilot to control engine SPEED. often the HP cock and throttle are COMBINED in one lever
- the LPSOV or LP COCK which is used to isolate the engine fuel system from the AIRFRAME. used mainly by ENGINEERS during maintenance
properties of jet A1:
- flash point: __ celsius minimum
- specific gravity: approximately 0.__ at 15 celsius
- freeing temperature: -__ celsius maximum
properties of jet A1:
- flash point: 38 celsius minimum
- specific gravity: approximately 0.81 at 15 celsius
- freeing temperature: -47 celsius maximum
kerosene is the fuel generally used in gas turbine engines and is known commercially as Jet __.
it must be remembered that kerosene is _________ which means it will attract and absorb water from the atmosphere
kerosene is the fuel generally used in gas turbine engines and is known commercially as Jet A1.
it must be remembered that kerosene is HYGROSCOPIC which means it will attract and absorb water from the atmosphere
volatility is the degree of ease at which a liquid can be changed into a _________
volatility is the degree of ease at which a liquid can be changed into a VAPOUR
_____ _______ _______ (RVP) is the common measure of the volatility of gasoline
REID VAPOUR PRESSURE (RVP) is the common measure of the volatility of gasoline
JET A is a ________ fuel with a freezing point of -__ celsius. and a SG of 0.___ to 0.__
available only in the USA
JET A is a KEROSENE fuel with a freezing point of -40 celsius. and a SG of 0.775 to 0.83
available only in the USA
Jet B and JP4 are known as ____ cut gasolines with SG’s of 0.__
Jet B and JP4 are known as WIDE cut gasolines with SG’s of 0.76
JP5 is a high _____ point kerosene mainly for aircraft ______ use. SG around 0.__
JP5 is a high FLASH point kerosene mainly for aircraft CARRIER use. SG around 0.83
AVGAS is lighter than ________ fuels, having a SG of approx 0.__. only grade available is 100__ which has an octane rating of ___ and ___ lead content.
use may require additional checks and _________ to be carried out
gasoline has very powerful _______ properties and it is essential it doesn’t come in to contact with certain components such as ___________ panels and ______
AVGAS is lighter than KEROSENE fuels, having a SG of approx 0.72. only grade available is 100LL which has an octane rating of 100 and LOW lead content.
use may require additional checks and MAINTENANCE to be carried out
gasoline has very powerful SOLVENT properties and it is essential it doesn’t come in to contact with certain components such as TRANSPARENT panels and TYRES
any fuel spillage must be __________ and then cleaned up immediately IAW ______ procedures
any fuel spillage must be CONTAINED and then cleaned up immediately IAW LOCAL procedures
static ___________ additives even out __________ difference within the fuel by making it more conductive
static DISSIPATE additives even out POTENTIAL difference within the fuel by making it more conductive
corrosion _________ additives are added to fuel to protect the ________ metal components in the fuel system such as pipelines and fuel storage tanks from corrosion. can take the form of strontium chromate tablets
corrosion INHIBITOR additives are added to fuel to protect the FERROUS metal components in the fuel system such as pipelines and fuel storage tanks from corrosion. can take the form of strontium chromate tablets
FSII additives reduce the freezing point of the ______ that is present in the fuel, thus helping to prevent the formation of ice particles. the freezing point of the water in the fuel can be reduced to -__ - -__ celsius by using FSII
FSII additives reduce the freezing point of the WATER that is present in the fuel, thus helping to prevent the formation of ice particles. the freezing point of the water in the fuel can be reduced to -47 - -50 celsius by using FSII
biocidal additives are added to combat growth of microbiological __________ in the fuel
biocidal additives are added to combat growth of microbiological ORGANISMS in the fuel
cladosporium resinae spores exist _______ in fuels in most parts of the world, however, they will propagate when ______ is present and temperatures are between __ and __ celsius. the geographical zones when conditions are favourable to fungal growths is between __ degrees north to __ degrees south
fungus is of _____ black nature and may appear as any colour varying from white to ______ to near ______. in large quantities, it possesses as offensive _______.
can also cause erratic, or false, fuel ________ indications
cladosporium resinae spores exist DORMANT in fuels in most parts of the world, however, they will propagate when WATER is present and temperatures are between 25 and 35 celsius. the geographical zones when conditions are favourable to fungal growths is between 30 degrees north to 30 degrees south
fungus is of SLIMY black nature and may appear as any colour varying from white to BROWN to near BLACK. in large quantities, it possesses as offensive ODOUR.
can also cause erratic, or false, fuel QUANTITY indications
