Powerplant and Propellers Flashcards
NTOP Horsepower
2142 SHP
NTOP RPM and Torque
1200 (max 1212), 92% TQ (90 in air)
NTOP Nh and ITT
101% Nh, 765deg ITT
Can you exceed the NTOP ITT limit?
Yes up to 5degrees for 30seconds
MTOP Hp
2380 SHP
MTOP TQ + RPM
100%, 1200 RPM
MTOP limits
102.7%NH, 800ITT, 105.6%TQ, 1212RPM
How long can you have MTOP set for?
5 mins max
Max continuous power?
90%/1200RPM or 96%/1125RPM or lower. 102.7%NH, 800ITT
Max Transient NH and ITT
103.7%NH and 840deg ITT
Max transient TQ and RPM
115% and 1320RPM
What is the time limit for transient settings?
20Sec unless otherwise stated
Normal oil pressure range?
55-65PSI (60PSI)
When is an oil pressure lower than 55 PSI allowed?
40-55PSI permitted below 75%NH as per QRH
What pressure does the OIL PRESS warning come on?
42 PSI +/-2
What is the action for an OIL PRESS warning?
ENGINE FIRE/FAIL/SHUTDOWN
Memory items for ENGINE FIRE/FAIL/SHUTDOWN
P/L FI C/L off Aux Fx FX T handle PULL Aux pump off
Normal minimum oil pressure?
55PSI
Minimum temp for Unfx?
0deg
What is the normal oil temp range?
45-115deg
What is the significance of the minimum oil temp before takeoff?
Adequate temp for inlet rim anti-ice protection
When do the bypass doors have to be open?
On the ground below 10deg, in the air below 5deg, any visable moisture
When do the engine intake heaters turn on?
Below 15degrees and bypass doors open (w engine running)
What are the engine ITT starting limits?
800+ for 20secs, 840-900 for 12 secs, 900-950 for 5secs
What is the maximum time you can engage the starter for?
1 min
What are the Starter rest time requirements?
1/2/1/2/1/30
If we have an engine failure after take off with autofx armed, how much will the good engine uptrim by?
10% of current TQ
What compressor drives the ACC g/box?
NH
What accesories are driven by the accessory gbox?
MFC
OIL PUMP
DC GEN
EDP
What acccessories are driven by the RGB?
PCU Oil pump for the PCU Overspeed gov Hydraulic pump AC Gen
What prevent the P/L from being inadvertantly selected to below FI in flight?
gate + beta warning horn/lockout system (disables at 20ft RAD alt
What is the cockpit indication that an ECU has failed?
10% TQ uptrim on that engine,
ECU manual mode indicated on the ECU
#1/2 ECU MAN Caution
What precautions should you take on approach/landing with an engine in manual mode?
No precise fuel control/HBOV so small or smooth changes in power selection to prevent surge/stall,
No harmonic protection (500-780RPM) so not below disc on LDG,
Assymetric lever position for equal thrust
No auto uptrim if other engine fails