Engine Limitations Flashcards
1
Q
Max Reverse
A
Prop RPM = 1825 Oil Press = 85-105 Max ITT = 805 SHP = 675 Torque = 1865 Ng% = 101.6% Oil Temp = 0-99
2
Q
Max Idle
A
Oil Press= Min 40
ITT = 685
Ng% = Min 52%
Oil Temp = -40-99
3
Q
Transient
A
Prop RPM = 2090 ITT = 850 for 2 sec Torque = 2400 for 20 sec Ng% = 102.6% for 2 sec Oil Temp = 0-104 for 10 minutes
4
Q
Take Off
A
Prop RPM = 1900 Oil Press = 85-105 ITT = 805 SHP = 675 Torque = 1865 / 1970 with 1800 Prop RPM (SOP: 1800 if runway dist is 1.5x required t/o roll) Ng% = 101.6% Oil Temp = 10-99
5
Q
Max Cruise
A
Prop RPM = 1900 (SOP: 1750 or 1600 VIP) Oil Press = 85-105 ITT = 740 (SOP: 700) SHP = 675 Torque = 1865 / 1970 with 1800 Prop RPM Ng% = 101.6% Oil Temp = 0-99
6
Q
Start
A
ITT = 1090 (SOP: 900, if ITT is continue rising towards 900 CANCEL START)
Oil Temp = -40
7
Q
Max Continues Rated
A
Prop RPM = 1900 Oil Press = 85-105 ITT = 805 SHP = 675 Torque = 1865 / 1970 with 1800 Prop RPM Ng% = 101.6% Oil Temp = 10-99
8
Q
Max Climb
A
Prop RPM = 1900 Oil Press = 85-105 ITT = 765 (SOP: 740) SHP = 675 Torque = 1865 / 1970 with 1800 Prop RPM Ng% = 101.6% Oil Temp = 0-99
9
Q
Time Limitiations
A
Reverse = 1 minute (SOP: 30 sec) ITT Above 765 = 5 minutes Max transient torque = 20 sec Max transient ITT and Ng% = 2 sec Max ITT = 2 sec
10
Q
Ng%
A
100% = 37,500 RPM
101.6% = 38,100 RPM
Power Turbine 33,000 RPM
11
Q
Engine Start Cycle
A
1) BATT START
30 sec ON - 60 sec OFF
30 sec ON - 60 sec OFF
30 sec ON - 30 min OFF
2)EXTERNAL START
20 sec ON - 120 sec OFF
20 sec ON - 120 sec OFF
20 sec ON - 60 min OFF
