Powerplant Flashcards
1
Q
ENGINES
- Model –
- BPR –
- LP – __ fan / __ turbine
- HP – __ axial / __ cent / __ turbine
A
ENGINES
- Model – HTF7250G
- BPR – 4.2:1
- LP – 1 fan / 3 turbine
- HP – 4 axial / 1 cent / 2 turbine
2
Q
THRUST
• MCT (SE) –
• TO @ SL, ISA –
• APR @ ISA +20 –
up to 15000ft, linear decrease to CLB at 20,000ft
A
THRUST
• MCT (SE) – 7240 lbs
• TO @ SL, ISA – 7624 lbs
• APR @ ISA +20 – 7624 lbs
(up to 15000ft, linear decrease to CLB at 20,000ft)
3
Q
IGNITION
• No. of ignition plugs – • No. of plus used: Air start / CONT IGN – Ground start – • Stall activation • Electrical source –
A
IGNITION
• No. of ignition plugs – 2 (4 and 8 o’clock) • No. of plus used: Air start / CONT IGN – Both Ground start – 1 • Stall activation • Electrical source – E Bus or PMA
4
Q
FADEC
• No. of ECUs per FADEC –
START • Fuel flow – N2 > \_\_ • SOV cut out – \_\_ N2 + \_\_ secs • PMA – > \_\_ N2 • E Bus – < \_\_ N2
A
FADEC
• No. of ECUs per FADEC – 2
START • Fuel flow – N2 > 6-8.9% • SOV cut out – 46% N2 + 2 secs • PMA – > 45% N2 • E Bus – < 45% N2
5
Q
ENGINE SYNCH
- Synch options – __/__/__
- When is Synch avail – __/__/__
- Which is Master –
A
ENGINE SYNCH
- Synch options – N1/N2/OFF
- When is Synch avail – CRZ/CLB/Above idle
- Which is Master – No master (whichever is higher or L when same)
6
Q
APR
- On when –
- OEI – __ mins
- Manual – __ mins
A
APR
- On when 1 – 5% N2 split / 1 lever at TO power
- OEI – 10 mins
- Manual – 5 mins
7
Q
ENGINE FUEL
- Jettison rate – ___ lbs/min
- No. of fuel nozzles –
- No. nozzles used for start –
- What drives CVGA (Compressor variable Geometry Actuators) –
- Fuel heated by –
A
ENGINE FUEL
- Jettison rate – 180 lbs/min
- No. of fuel nozzles – 16
- No. nozzles used for start – 4 (increase to 16)
- What drives CVGA (Compressor variable Geometry Actuators) – Fuel pressure
- Fuel heated by – FHOC (between LP, HP pumps)
8
Q
BLEED AIR
- LP/IP –
- HP –
A
BLEED AIR
- LP/IP – 4th stage axial
- HP – centrifugal compressor
9
Q
TR - LOCKS
- _______
- _______
- _______
A
TR - LOCKS
- Primary hydraulic
- Primary electrical balked hydraulic lock
- Internal locks on actuators
10
Q
TR - Deployment
- Max avail above –
- 85 to 65 kts – decrease to __ of max
- Idle by –
A
TR - Deployment
- Max avail above – 85 kts
- 85 to 65 kts – decrease to 68% of max
- Idle by - 40 kts
11
Q
TR - CONDITION
- _______
- _______
- _______
A
TR - CONDITION
- LG down and locked
- WOW or wheel spin 45 kts
- Reverse idle
12
Q
TO/GA
- Trust range to ____
- TL to ___
- Sequences ___
- Command bar to __ or __ (OEI)
- NAV source to ___
A
TO/GA
- Trust range to TO/GA
- TL to max
- Sequences Flight Plan
- Command bar to 17 or 8 (OEI)
- NAV source to FMS
13
Q
LIMITATIONS - Engine Ground Start
- Max Crosswind –
- Max Tailwind –
A
LIMITATIONS - Engine Ground Start
- Max Crosswind – 20 kts
- Max Tailwind – 15 kts
14
Q
LIMITATIONS - Max ITT during start
- N2<40% –
- N2>40% –
A
LIMITATIONS - Max ITT during start
- N2<40% – 650 °C
- N2>40% – 950 °C
15
Q
LIMITATIONS - Starter Duty
- __ consecutive starts, __ mins cooling
- __ mins motoring, __ mins cooling
A
LIMITATIONS - Starter Duty
- 3 consecutive starts, 15 mins cooling
- 5 mins motoring, 15 mins cooling
