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WorksheetsAirframe Structure
Total questions: 25
Worksheet time: 25mins
Name
Class
Date
1.
A Fuselage Station is a
a)
lateral line on an aircraft wing.
b)
vertical line on aircraft fuselage.
c)
longitudinal line on the aircraft fuselage.
2.
The main forces on an aircraft structure are
a)
tension, compression, torsion, and shear.
b)
tension, compression, torsion and strain.
c)
tension, compression, twisting, and shear.
3.
A member taking a compression load is called a
a)
beam.
b)
cable.
c)
fairing.
4.
Which of the following is primary structure for fuselage?
a)
Frame.
b)
Rib
c)
Stringer.
5.
Which parts of the aircraft are classified secondary structures?
a)
These parts of the airframe are highly stressed but if damaged will not cause failure of the aircraft.
b)
These parts of the airframe are highly stressed and if damaged may cause failure of the aircraft and loss of life.
c)
These are lightly stressed parts such as fairings, wheel shields and minor component brackets et
6.
One purpose of a rib is to
a)
support the bending loads on a fuselage.
b)
form the main lateral member in an aerofoil.
c)
maintain the correct contour of aerofoils covering.
7.
The two common configurations for landing gear arrangements are:
a)
Conventional and tricycle
b)
Traditional and bicycle
c)
Amphibian and belly gear
8.
What is attached to the rear of the vertical stabilizer?
a)
Elevator.
b)
Aileron.
c)
Rudder.
9.
An elevator controls the aircraft motion in
a)
yaw.
b)
pitch.
c)
roll.
10.
Jet engines are usually mounted by
a)
aluminum castings.
b)
forged mounts and bolted to aircraft forged structure.
c)
welded steel tubing.
11.
The term 'empennage' incorporates
a)
rudder, ailerons, spoilers.
b)
elevators, stabiliser, ailerons.
c)
elevators, stabilizer, rudder.
12.
The four main structural items making up a horizontal stabilizer are
a)
spar, rib, bulkheads, skin panels.
b)
spar, rib, stringers, skin panels.
c)
spar, rib, longerons, skin panels.
13.
Where does a slat is usually attached to?
a)
At leading edge of the main wing
b)
The leading edge of the horizontal stabilizer
c)
The leading edge of the vertical stabilizer
14.
Which of the following is not a secondary control surface?
a)
Spoiler
b)
Flap
c)
Aileron
15.
Which statement below that can best relate to the advanced composite material?
a)
Low strength to weight ratio
b)
High strength to weight ratio
c)
High stiffness to strength ratio
16.
The following ATA Chapter is about aircraft structures, general information?
a)
57
b)
51
c)
25
17.
The main function of aircraft’s bulkhead is to
a)
maintains the pressure required for aircraft cabin.
b)
stabilize the airplane movement during flight.
c)
improve fuselage bending strength during flight.
18.
Tension is the stress of
a)
crush or compression.
b)
elongation or stretch.
c)
twisting or bending.
19.
Aircraft above 5700kg MTWA are listed in
a)
EASA 23.
b)
EASA 25.
c)
EASA 27.
20.
Strain can be defined as the ratio of
a)
original length/stress.
b)
change in length/original length.
c)
original length/change in length.
21.
Fatigue refers to the loss of strength or resistance to load, experienced by a component or structure as the number of
a)
load cycles
b)
ultimate load applied
c)
flying hours increase.
22.
Safe life time period may be indicated in
a)
flying hours.
b)
elapsed time or flying hours.
c)
elapsed time , flying hours or pressurisation cycles.
23.
Rivets are identified by
a)
length, diameter and weight.
b)
length, weight and head shape.
c)
head shape, length and diameter.
24.
Structure and components are granted a period of time during which it is considered that failure is extremely unlikely. What design concept is this?
a)
Damage tolerance
b)
Safe life
c)
Fail safe
25.
Main spar is classified as which structural category?
a)
Tertiary
b)
Secondary
c)
Primary
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