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47 Cards in this Set
- Front
- Back
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RR engines use …. for thrust setting which is ……. to …….
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Engine Pressure Ratio(EPR)
comp inlet pressure turbdischarge pressure (thrust) |
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IEPR or …
is ratio of ….. to ….. |
Integrated EPR
face of fan Px Bypass / jet nozzle combi |
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CFM engines use … or ... for thrust setting
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N1 fan speed
low pressure compressor |
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max T.O. thrust is limited to … minutes
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5 - 10
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….. thrust is not time limited
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max continuous
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Thrust setting is
required below … kts to prevent …. and to ensure ….. is met and allow for … due to ... |
80
parameters chasing performance decrease / ram rise lose |
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At initial thrust lever advancement,
EPR …. due to … and …. but later on becomes proportional to ... |
reduces / slow resp / lag
thrust |
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… is used in turbo prop engines for thrust setting
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turque meter
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…. is the most important parameter at jet engine
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Turbine temp
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…. is the limiting factor at a jet engine
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Turbine temp
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The highest temp in a jet engine is at ….
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turbine inlet
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JPT stands for ….
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Jet Pip Temp (aft turb)
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TOT stands for ….
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Turbine Outlet Temp
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ITT stands for ….
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Inlet Turbine Temp
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TIT stands for ….
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Turbine Inlet Temp
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TET stands for ….
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Turbine Entry Temp
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TGT stands for ….
(2) |
Turbine Gas Temp
Total Gas Temp |
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engine oil instrument (3)
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temp
pressure quantity |
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Fuel instruments
…… at …. …… as ... |
fuel flow
KG or lb per hr per engine fuel quantity KG or lb per hr |
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Engine vibration monitor
is by ….. and comparing to ... |
sensing relative amplitude
reference datum |
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ECTM stands for ...
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Engine Condition
Trend Monitoring |
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in ECTM the …. is …. at a … basis to collect ….. and ….. them to a ….
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engine / monitored / daily
specified data / normalize STD day |
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ECTM can provide …
(2) |
longer time btw overhauls
early engine problem detection |
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EEC is the ……..
which replaces ………… control system |
Electronic Engine Control
hydro pneumatic & mechanical fuel |
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EEC (engine system) controls
(7 items ) |
Engine spool speed
EGT EPR start monitoring Fuel Flow Ignition power Shutdown |
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FADEC stands for ...
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Full Authority
Digital Engine Control |
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FADEC controls … and … engine conditions
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all steady
transient |
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FAFC stands for ...
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Full Authority Fuel Control
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Thrust lever position
… of thrust is at …. |
50%
top 25% |
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APU has a …. gas turbin.
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constant speed
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APU as an electrical power supply does not need … or ...
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CSD (constant speed unit)
IDG (integrated drive unit) |
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SG definition
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Ratio of
Density of substance(mass/vol) to Density of reference (water) |
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SG vs. Density
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proportional
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SG vs. Temp
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i-proportional
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In capacitive measurement,
the fuel acts as a … where …… of a variable … is proportional to ... |
dielectric
capacitance / capacitor fuel content |
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In capacitive fuel measurement,
… sensors are used |
parallel
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Capacitive fuel measurement
is less prone to …. |
transient changes
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In capacitive fuel measurement.
a Reference capacitor or …. modifies fuel indication for ….. or ... |
compensator
deferent densities grades of fuel |
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Resistive fuel measurement
has a ….. |
float operated variable resistor
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Cold fuel is found towards the …. which is a safety problem
(ice etc) |
boost pump inlet
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Fuel heating advantage
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increases volatility
assists ignition |
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Fuel heating methods (2)
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fuel / oil heat exchanger
bleed air heating |
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Fuel Freezing point
is the temp @w …. will form |
wax crystal
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Fuel Pour Point
is the temp @w …. |
fuel starts solidifying
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Fuel Freezing point
vs. Fuel Pour Point |
Pour is 6 deg below Freezing
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… is used to create positive flow of fuel to engine driven pump
to prevent …. (or …) |
Fuel boost pump
cavitation vapor lock |
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Venting prevents ….. @ fuel tanks
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vacuum forming
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