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M11 > M11.2 > Flashcards

M11.2 Flashcards

1
Q

What is the difference between monocoque and semi monocoque construction?

A

The difference is that monocoque construction has no bracing members and therefore the skin takes all the load whereas semi monocoque has bracing members that provide structural strength and carry the loads.

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2
Q

Do you floorboards have to be environmentally sealed?

A

Yes

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3
Q

What is the job of nacelle?

A

To contain the engine and its accessories and to reduce the aerodynamic profile of the engine

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4
Q

What is the strongest type of joining method?

A

Nut and bolt

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5
Q

In most cases, the structural members are designed to carry … loads rather than … loads.

A

End loads, side loads.

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6
Q

True or false: the failsafe method relies upon the duplication of certain structural members.

A

True

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7
Q

What is the damage tolerance method/concept?

A

It is the concept that should serious damage occur to the structure then the remaining structure will withstand reasonable loads, until the damage is detected

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8
Q

What is fatigue?

A

Where a material will fracture after a series of cyclic loads that may be much less than the ultimate load.

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9
Q

What are the three classifications of aircraft structures?

A

Primary secondary and tertiary

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10
Q

Name all six dresses that can affect a structure of an aircraft

A

Compression, torsion, tension, hoop stress, shear and bending

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11
Q

What classification of structure would a wing root fairing be?

A

Tertiary

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12
Q

What are the structural members of the aircraft design to do?

A

Carry a load or resist stress

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13
Q

Describe compression stress

A

It is stress that resists a crushing force

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14
Q

Describe torsion stress

A

Stress that causes twisting

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15
Q

What two stresses is bending stress a combination of?

A

Compression and tension

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16
Q

Name one side effect of hoop stress

A

Causes the compartment to stretch longitudinally, the other causes the circumference of the compartment to expand

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17
Q

What is the abbreviation for body station?

A

BS

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18
Q

What are the three axes of motion on an aircraft?

A

Longitudinal, lateral and vertical

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19
Q

What are the aircraft zones?

A

The primary areas of the aircraft fuselage, the wings and the engine

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20
Q

What are body water lines?

A

They are the horizontal planes at right angles to the body stations and the body buttock lines

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21
Q

Where is the body buttock line zero located?

A

It is the body centre line

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22
Q

What is the abbreviation for left body buttock line?

A

L BBL

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23
Q

Is the reference plane of an aircraft swing the same as (parallel to) the dihedral angle of the wing?

A

Yes

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24
Q

What are nacelles divided into?

A

In the cell stations, nacelle buttock lines and nacelle waterlines

25
Q

Where is the nacelle station zero located?

A

In front of each forward engine mount

26
Q

What is the nacelle buttock line defined by?

A

The wing buttock lines

27
Q

What are the nacelle water lines parallel to?

A

The wing reference plane

28
Q

The stabiliser chord plane is also called what?

A

Horizontal stabiliser reference plane

29
Q

At what angle is the horizontal stabiliser buttock line to a stabiliser chord plane?

A

90°

30
Q

How does the horizontal stabiliser buttock line lay in relationship to the body centre line?

A

Parallel to it

31
Q

Where is the horizontal stabiliser station zero?

A

At the intersection of the leading edge extension and the horizontal stabiliser buttock line zero

32
Q

Where is the rudder station zero?

A

At the intersection of the rudder hinge centreline and the body waterline

33
Q

What are the vertical stabiliser coordinates divided into?

A

Fin stations, water lines, leading edge stations and rudder stations

34
Q

Where is the vertical stabiliser leading edge station?

A

At right angles to the stabiliser leading edge

35
Q

Where is the rudder station located?

A

At right angles to the rudder hinge centre line

36
Q

How many major zones are there?

A

Eight

37
Q

What is the wing reference plane known as?

A

Wing Datum

38
Q

Where is the right angle of the wing reference plane formed?

A

At a right angle to rib one

39
Q

Is the nacelles station zero located from the same point as the body station zero?

A

No it is located aft of the body station zero

40
Q

What are the major zones divided into and why?

A

They are divided into sub major zones so it is easy to locate assemblies, subassemblies and panels

41
Q

Generally what type of numbers are on the right hand side of the aircraft?

A

Even

42
Q

What does the first, second and third digit represent?

A

Major zone, sub major zone, and zone

43
Q

What two types of damage does lightning strikes usually result in?

A

Direct and indirect

44
Q

Where are the most likely areas for lightning strikes to occur?

A

The fuselarge nose section and the aerofoil trailing edge tips

45
Q

When installing grounds what are the three conditions that apply?

A

Grounds must be separated; AC, DC and shields, there must be no more than four terminals on one stud, and in a fuel vapour area dual grounds must be installed

46
Q

How are fluids directed to drainholes?

A

By a system of longitudinal and cross drain paths through the stringers and frame shear clips

47
Q

What load does a tie rod take?

A

Tensile

48
Q

What are the two types of general types of fuselage construction?

A

Monocoque and truss type

49
Q

In a true monocoque construction, what gives shape to the fuselage?

A

Formers, frame assemblies and bulkheads

50
Q

Why are floorboards in wet areas sealed?

A

To prevent moisture ingress which could cause galvanic corrosion

51
Q

What is zone 100?

A

The lower half of the fuselage

52
Q

What is there in 200?

A

The upper half of the fuselage

53
Q

What is zone 300?

A

The empennage (tail)

54
Q

What is zone 400?

A

Power plants and struts

55
Q

What is in zone 500?

A

The left wing

56
Q

What is in zone 600?

A

The right wing

57
Q

What is in zone 700?

A

The main landing gear and landing gear doors

58
Q

What is in zone 800?

A

The doors

M11 (7 decks)

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