Engine Limits EX Flashcards
1
Q
What is ITT
A
Interstage Turbine Temperature (ITT) is the temperature of the exhaust gases between the high pressure and the low pressure turbines. The gas temperature is measured by a number of thermocouples mounted in the exhaust stream
2
Q
What is NG %
A
Gas generator (engine speed in % RPM gas turbine speed) how much hot part of engine is working.
3
Q
Takeoff (5 min) Torque (MW) ITT (MW) NG (MW) RPM Oil PSI Oil Temp
A
Takeoff (5 min) Torque 2000 ITT 850 (775) NG 103.7% 1900RPM 85-105 PSI 32-99 c
4
Q
Max Climb Torque (MW) ITT (MW) NG (MW) RPM Oil PSI Oil Temp
A
Max Climb Torque 2000 ITT 825 (775) NG 103.7% 1900RPM 85-105 PSI 32-99 c
5
Q
Max Cruise Torque (MW) ITT (MW) NG (MW) RPM Oil PSI Oil Temp
A
Max Cruise Torque 1300 ITT 805 (775) NG 103.7% 1900RPM 85-105 PSI 32-99 c
6
Q
Iddle ITT NG Oil PSI OIL Temp
A
Iddle ITT 700 NG 55 Minutes Oil PSI 40 Minutes OIL Temp -40-99 c
7
Q
Low Idle
NG min
A
55%
8
Q
Hi idle
Ng
A
68%
9
Q
Max Reverse Torque ITT (MW) NG (MW) RPM Oil PSI Oil Temp
A
Max Reverse 1 min max Torque 2500 ITT (MW) 850 -same as max T/O NG (MW) 103.7% RPM 1825 Oil PSI 85-105 Oil Temp 32-99 c
10
Q
Transient Torque (MW) ITT (MW) NG (MW) RPM Oil PSI Oil Temp
A
Transient - think wow big Torque (MW) 2600 20 sec max ITT (MW) 905 20 sec max NG (MW) 105.4% 20 sec max RPM 2090 Oil PSI - Oil Temp 32-99
11
Q
Start Torque (MW) ITT (MW) NG (MW) RPM Oil PSI Oil Temp
A
Start -Think hot because low air flow Torque (MW) - ITT (MW) 1090 max 2 sec NG (MW) 103.7% RPM - Oil PSI 200 MAX Oil Temp -40min
12
Q
Max Rated Torque (MW) ITT (MW) NG (MW) RPM Oil PSI Oil Temp
A
Max Rated Torque (MW) 2397 ITT (MW) 825 - same max climb NG (MW) 103.7% RPM 1900 Oil PSI 85-105 Oil Temp 32-99
13
Q
approaches
RPM
A
1900
14
Q
200 Amp Gen
NG
A
70%
15
Q
Bleed air operating range
NG
A
86%-92%
