Brainscape's Knowledge GenomeTM

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


See full index

M6 > 6.10 > Flashcards

6.10 Flashcards

1
Q

What’s 6 advantages of cables ?

A
  1. Strong
  2. Light weight
  3. Flexible
  4. High mechanical efficiency
  5. Can be setup without backlash
  6. Vibration doesn’t effect cables
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

3 disadvantages of cables ?

A
  1. Tension must be adjusted regularly
  2. Prone to wear at points of contact ( pulleys etc )
  3. Tension varies with temp changes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Whats the construction process of a cable ?

A

Number of wires braided together forming a strand, number of strands are braided together to form a cable

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

Whats an opposite direction twist called ?

A

Regular lay - twisting wire and strands in opposite directions reduces the cables tendency to uncoil
( cables either have left or right regular lay )

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

What “lay” is it called if you twist the stands around the central core ?

A

Lang lay

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

Whats the 4 common types of steel cable used for aircraft ?

A
  1. Non flexible 1x7
  2. Non flexible 1x19
  3. Flexible 7x7
  4. Extra flexible 7x19
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many wires and strands are the non flexible 1x7 cable made from ?

A

1 strand and 7 wires

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

Where are non flexible cables only aloud to be used ?

A

Straight runs where the cable doesn’t pass over any pulleys.

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

Where are flexible cables used ?

A

Straight runs, or where large pulleys are being used.

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

Where are extra flexible cables used ?

A

Used where cables must change direction over small diameter pulleys ( flight controls / trim systems )

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

Whats the 4 cable end fittings ?

A
  1. Terminals
  2. Thimbles
  3. Bushings
  4. Shackles
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Whats the 4 types of terminal fittings ?

A
  1. Threaded
  2. Fork ends
  3. Eye ends
  4. Single/double shank ball ends
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What 3 terminals are used to connect a cable to a turnbuckle and bell cranks ?

A

Threaded
Fork
Eye

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

What are the ball terminals used to attach cables to ?

A

Quadrants

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

Where are the single shank and double shank ball ends used ?

A

Single shank - end of cable
Double shank - end of cable or in centre of cable run

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

Why would you use lock clad cables ?

A

To eliminate sagging and wear in long cables.

17
Q

Whats a lock clad cable made up of ?

A

Swaged aluminium tubing around steel cable

18
Q

What does the swaged aluminium tubing on lock clad cables do ?

A

Prevents abrasion of outer wire when pain through bulkheads / other obstructions in the aircraft.

19
Q

Whats a turnbuckle ?

A

Mechanical screw device which can make minor adjustments I cable length and tension

20
Q

How can the left hand thread side of turn buckle be identified ?

A

Has a groove at end

21
Q

When screwing turnbuckle onto cable, how many threads should be left exposed at either side of the turn buckle ?

A

Not more than 3 threads

22
Q

Whats the two ways of locking a turnbuckle ?

A
  1. Lock wire
  2. Special clips
23
Q

Why is a cable tension regulator used ?

A

When the cable tension changes due to expansion and contraction of the aircraft’s structure and cables I flight.

24
Q

Why are pulleys used ?

A

To guide cables and change their direction.
( pulleys require no further lubrication during use )

25
Q

Why must pulleys have guards ?

A

To prevent cable jumping out of the grooves when there is lack in the cable

26
Q

When should you use a fair lead ?

A

When there is a possibility of the cable contacting the aircraft’s structure.

27
Q

Why are control rods used ?

A

Used in flight control systems to give push pull motion.

28
Q

What can happen to control rods which are fitted with a bearing ?

A

Can become loose or disconnected due to failure of swaging that retains ball races.

29
Q

What can happen if there is wear where the bell crank connects to the control rod ?

A

Cause a delay in response to the system it is connecting to.

30
Q

Where is a torque tube used ?

A

Where there is a twisting motion in a control system.

31
Q

Whats the two most common flexible control systems ?

A
  1. Bowden cables
  2. Teleflex control cables
32
Q

What do small light aircraft use Bowden cables for ?

A

Throttle or fuel mixture control

33
Q

What could cause Bowden cables to fail to function smoothly ?

A

If water or contaminants enter housing

34
Q

What controls on modern day aircraft do teleflex cables operate ?

A
  1. Engine controls
  2. Propeller controls
  3. Trimming controls
35
Q

Whats the 3 types of teleflex cables ?

A
  1. DS 23/2
  2. DS 380
  3. DS 169330
36
Q

Where is a sliding end fitting used ?

A

Where there is no need to convert the push-pull movement of the cable to rotary.

37
Q

When do you use a quick break unit ?

A

To facilitate the removal of components without disturbing the control.

M6 (6 decks)

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