POWERPLANT

49問 • 1年前

問題一覧

"LVR CLB" flashes white on FMA, if the throttles are not in CL position when:

The A/C is above the altitude of thrust reduction

A/THR can be engaged:

Automatically when pilot initiates a take-off or a go-around or if there is an alpha floor detection after T/O and down to 100ft (RA) on landing

After a FLEX TO, you have an engine failure and you want to select MCT:

You set the throttle levers out of the FLEX/MCT detent (to TOGA or CLB detent) then back to FLEX/MCT position

At Toulouse (500 ft): Tref is 29°C, outside air temp. is 36°C and you found a corrected flex temp of 33°C.. Is it possible to use FLEX thrust for take-off?

At take-off, as soon as the power is set (FLEX or TOGA):

ATS function is engaged but not active

Cranking may be manually selected by setting:

With Master Sw. to OFF, the MODE selector to CRANK and MAN START pb to ON

During an automatic start on ground, the sequence is:

Ignition by N2 > 16%, HP fuel valve opening by N2 > 22% - start valve closure by N2 > 50%

During an automatic starting sequence, when does the pack valve close?

When IGN/START is selected

During an automatic starting sequence:

Start valve closes at N2>50%

EGT indication turns red on E/WD, when EGT is higher than:

950°C

How is the oil cooled?

By the servo fuel heater and fuel/oil heat exchanger

In A/THR Mode the thrust computed by the FMGC is limited:

By the ECU (with the TLA)

In flight, if the instinctive disconnect pb is pressed for more than 15 sec., the A/THR including alpha floor is definitely lost:

Right

In manual mode, when the thrust levers are between the CLB detent and IDLE:

Each position of the levers corresponds to an N1

In manual thrust, in cruise, the pilot should limit the N1. What is the limit?

Displayed MAX CLB N1, minus 1.9 %

Is the MAX CRUISE N1 displayed on upper ECAM:

Is the engine still supplied in case of fuel filter CLOG?

Yes, by by-passing the fuel filter (by-pass) valve)

LVR ASYM amber message (FMA) means:

The thrust lever are not aligned

MCT amber message (in the left part of the FMA) means:

Throttles are not in MCT position after engine failure in flight

Maximum EGT during engine start is:

725°C

Oil pressure indicator turns red when pressure is lower than?

13 psi

On ground the automatic start sequence is:

Start valve and LP fuel valve opens, ignition starts when N2 > 16%, HP fuel valves open when N2 > 22% when N2 > 50%, start valve closes and igniter off

On ground, the start sequence is automatically aborted:

In case of hot start, hung start, a stall or no light up

Pressing the ENG. FIRE pb switch (on the ENG fire panel) causes the closure of:

Fuel LP valve

REV GREEN appears on the N1 indicator when?

The reverse doors are fully deployed

Reduced thrust is permitted:

If corrected temp. is lower than Tmax FLEX (ISA + 53°C)

Reverse deployment requires TLA-3°, signal from the SEC's. One reverse will be lost if:

Any

Starter cool down time requirements are:

15 min cooling time after 4 cycles of 2 min

The FADEC automatically selects continuous ignition in the following cases:

Ignition delay during start, flameout detected or EIU failure while engine running

The FADEC system is:

Self powered above 12% N2

The low pressure rotor (N1) consists of:

A front fan (1 stage) - 4 stage LP compressor - 4 stage LP turbine

The maximum continuous oil temperature limit may be exceeded . What is the limit, and under what conditions?

155°C for less than 15 min

The maximum reverse thrust should not be used below:

70 knots (idle reverse down to A/C stop)

The thrust limit is computed by:

The ECU according to the thrust lever position

The thrust reverser activation condition are:

Aircraft on the ground and thrust lever between reverse idle detent and max reverse

Thrust reversers are actuated by:

Hydraulic actuators: green for engine 1 - yellow for engine 2

What device provides direct closure of the HP and LP shut-off valves?

The ENG MASTER switch in the OFF position

What is the EGT limit at TOGA power setting?

950°C for 5 min both engine running

What is the FADEC?

Is a digital engine control system that performs complete engine management

What is the maximum N1:

104%

What is the maximum N2 for starter engagement:

20%

What is the maximum N2:

105%

What is the maximum allowable flex temperature?

ISA + 53°C

What is the maximum continuous oil temperature:

140°C

What is the maximum starter operating time: (4 consecutive cycles of)

2 min. followed by 20 sec. of no operation

What is the minimum oil pressure at ground idle:

13 psi

What is the minimum oil quantity (ECAM indications):

9.5 qts + estimated consumption (0.5 qt/hr)

What is the minimum starting oil temperature:

-40°C

Which valve ensures an adequate fuel flow:

The fuel metering valve

B777 - Part 5

Angelo Ortiz · 50問 · 3年前

B777 - Part 5