Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

B300 Course > 28 Fuel Systems > Flashcards

28 Fuel Systems Flashcards

1
Q

What type of fuel storage is on the aircraft?

A

Series of rubber bladder type cells and an integral tank in each wing connected by a cross feed line with a valve.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Where is the aux fuel tank located and what is its capacity?

A

Center sections of the wing and 79.5 Gallons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the total usable fuel capacity?

A

539 gallons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does the MAIN fuel system consist of?

A

Nacelle tank, 2 wing leading edge tanks, 2 box section tanks and an integral tank.
(6 total)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How is the outboard fuel delivered to the nacelle tank?

A

Via gravity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How is fuel transferred from the aux system to the main system?

A

Via a jet pump mounted adjacent to the outlet strainer and drain in the aux cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many sump drains are there for the main and aux systems?

A

5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How many drains does the nacelle have and what purpose?

A

2 at the bottom fwd side of the nacelle, inb drain is for standby boost pump and the outboard is for the nacelle sump.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The gravity feed line/tube has 1 drain valve where is this located?

A

aft outboard side of main landing gear structure.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How is the main and aux fuel system vented?

A

Through a recessed vent (to prevent icing) coupled to a static vent (heated to prevent icing) on the underside of the wing.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What happens in the event the recessed vent becomes blocked?

A

Your secondary static vent will take over venting the fuel system.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What prevents back flow from the nacelle tanks into the wing tanks?

A

A flapper type check valve located at the end of the gravity fed line.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What type of probes are used on the fuel system?

A

Fuel Capacitance probes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Explain the make up of the fuel capacitance probes.

A

Two concentric tubes, integral compensator located at the lowest point. (always suspended in fuel)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How does the capacitance fuel probe work?

A

The fuel in the space between the 2 tubes acts as the dielectric, the capacitance of the probe changes in relation to the dielectric (the fuel to air ratio in the tank)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What other factors can effect the capacitance of the probe?

A

Density changes in fuel manufacturers or temperature.

17
Q

The fuel probe lengths are difference sizes to match the contour of the tank, why?

A

Provide linear capacitance vs volume in the tank at differing altitudes.

18
Q

What can the integral compensator of the fuel probe sense?

A

Variations of the dielectrics constant cause by temperature change of the fuel.

19
Q

When the empty capacitance test is carried out where should this be recorded?

A

airframe log book.

20
Q

What needs to happen anytime a fuel probe is changed?

A

A new empty tank value will need to be established.

21
Q

What are the preferred and alternate procedures of calibrating the fuel system?

A

Preferred - Empty tank, drained sumps.

Alternate - Fuel tanks at any level (Full Tanks) (or Level Fuel)

22
Q

How do you carry out a leakage test of a fuel cell bladder?

A

Plug all openings, inflate with 1/4 PSI with a mixture of shop air an ammonia gas. check leakage with phenolphthalein solution.

23
Q

What filter is added to the standby pump?

A

A noise filter to prevent interference.

24
Q

Where are the fuel pump RF filters located?

A

1 each side next to the electrical standby pump.

25
Q

How does the Aux system jet transfer pump get activated?

A

Via the engine driven boost pump which activates your motive flow valve.

26
Q

When the switch for your AUX system is in AUTO what happens to your motive flow valve?

A

power is applied to the motive flow valve by your automatic fuel transfer module.

27
Q

If you want to manually turn on your motive flow valve for AUX fuel transfer what must be done?

A

Place the switch into the AUX TRANSFER OVERIDE position.

28
Q

When fuel is low in the AUX tank how is the motive flow valve turned off?

A

Via a low level float valve.

29
Q

Does your crossfeed system feed fuel directly to the tank or the engine?

A

Engine.

30
Q

Where are your firewall shut off valves located?

A

Behind the firewall on the inboard side.

31
Q

Where is your crossfeed valve located?

A

inboard side of left wheel well.

32
Q

What are installed close to your standby pump to prevent interference?

A

radio frequency filter.

33
Q

What type of fuel indicating system is installed on the aircraft?

A

Capacitance type, compensated for specific gravity and reads in pounds on a linear scale.

34
Q

What amount of fuel will bring on your L/R FUEL QUANTITY annunciator?

A

300 pounds giving you approx 30 minutes of flight time remaining.

35
Q

What sequence is fuel indicating system carried out?

A

system ins, prob ins, system cap, probe cap, indicator test

B300 Course (37 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions