Engine Flashcards
five sections
inlet, compresser, diffuser, combustion, exhaust
Take-off power (TOP) of T53-L-703
1800 SHP
Max continuous power (MCP) of engine
1500 SHP
transmission (xsmn) TOP (five minutes)
1290 shp (100% torque (%Q)
transmission (xsmn) MCP
1134 shp (88% Q)
components of compressor section
five stage axial compressor, one stage centrifugal compressor, stator vanes, main bearings 1 and 2
bleed air reservoir (piggy back chamber) provides compressed air for what?
cabin heating and defrosting, oil cooler fan, engine de-ice, improved particle separator (if installed)
P3 pressure air tap operates what?
interstage bleed air actuator and self-purging particle separator (if installed)
Engine Gas Temperature (EGT) gauge colors at start
Green band 0-950 deg, red >950
Engine Gas Temperature (EGT) gauge colors engine stabilized
white 0-400, green 400-820, yellow 820-880, red >880
what are restrictions of yellow band in EGT?
can only fly in yellow for 30 minutes
where is torquemeter assembly?
air inlet section housing of engine
main drive shaft rpm
6,600 RPM
what do variable inlet guide vanes (VIGV) do?
change angle of attack between inlet air and first compressor rotor blades to maintain airflow requirements of compressor rotor assembly
what controls VIGV actuator?
computer section of the FCU
what operates the VIGV actuator?
fuel pressure
improved particle separator limits
use below 4C or 39F
expect icing of air inlet screens when?
below 4.4C (40F)
what happens to fuel flow with heat or de-ice on?
increases by 14 lbs (2%) or 21 lbs (3%) respectively
how much oil in oil tank reservoir?
2.8 Gallons
oil pressure limits
25 minimum, 80-100 continuous, 100 max. allowed up to 105 at start
OIL PRESS LOW comes on when?
below 25 psi
engine oil temp limits
less than or equal to 30 deg C free air temp, 93C max
>30 C FAT, 100 C max
where is engine oil filter?
In engine compartment left side
