Properties Flashcards
Start ITT
1000 C (5 sec)
Start TQ
N/A
Start Oil Pressure
200 max
Start N1
N/A
Start Np
N/A
Start Oil Temp
-40 C min
Idle TQ
3-8% ground; allowable torque range with Np stabilized and PCL at idle
Idle ITT
750 C
Idle ITT
750 C
Idle N1
60-61 ground
67 min flight
N1 values presented for PMU ON. With PMU OFF, N1 may may vary from these values
Idle Np
46-50 ground
Avoid stabilized ground operations from 62-80 Np
Idle Oil Pressure
90 min
Idle Oil Temp
-40-105 ground
10-105 flight
106-110 acceptable for ground operation at and below 20% torque
Takeoff/Max TQ
100 max
Takeoff/Max ITT
820 C
Takeoff/Max N1
104 Max
N1 values presented for PMU ON. With PMU OFF, N1 may vary from these values
Takeoff/Max Np
100 Max
Avoid stabilized ground operation from 62-80% Np
With PMU OFF, permissible maximum Np is 100 +/- 2%
Takeoff/Max Oil Pressure
90-120 psi
Normal oil pressure during steady state conditions is 90-120 psi. Operation at oil pressure less than 90 psi at flight idle or above is indicative of oil system malfunction
Takeoff/Max Oil Temp
10-105 C
Transient TQ
131% 20 sec
Torque at 131% is a materials limit above which damage to the engine may occur. Torque above 102% is indicative of a system malfunction
Transient ITT
870 20 sec
Transient N1
104 max
N1 values presented for PMU ON. With PMU OFF, N1 may vary from these values.
Transient Np
102% 20 sec
110% permissible at all powers for completion of flight in emergency
Avoid stabilized ground operation from 62-80% Np
Transient Oil Pressure
40-130 psi
Operation at this range permitted only during aerobatics or spins, and 15-40 psi for 5 sec with PCL at IDLE