Knowledge Check

Question 1

11.1 On what type of aircraft can elevons be found?

a) Tapered wing
b) Sweptback wing
c) Delta wing

Answer 1

c) Delta wing

Question 2

11.1 Which type of aircraft is a good example of an aircraft utilising ruddervators?

a) T-tailed
b) Dual-tailed
c) V-tailed

Answer 2

c) V-tailed

Question 3

11.1 What type of aircraft don’t have a vertical or horizontal stabiliser?

a) V-tailed
b) T-tailed
c) Dual-tailed

Answer 3

a) V-tailed

Question 4

11.1 What range is the speed above Mach 5 called?

a) Hypersonic
b) Mega-sonic
b) Total-sonic

Answer 4

a) Hypersonic

Question 5

11.2 What type of system does the lower pressurised fuselage use to remove fluids from the bilge area?

a) Electrically operated valves
b) Spring loaded valves
c) Pneumatically operated valves

Answer 5

b) Spring loaded valves

Question 6

11.2 What is the process called that provides the low-resistance return path for single-wire electrical systems?

a) Earthing
b) Mating
c) Bonding

Answer 6

c) Bonding

Question 7

11.2 Which stress is described as a combination of compression & tension?

a) Shear
b) Bending
c) Torsion

Answer 7

b) Bending

Question 8

11.2 Which type of aircraft wash will remove oil, grease, or carbon deposits & most dirt, apart from corrosion & oxide films?

a) Wet wash
b) Dry wash
c) Superficial wash

Answer 8

a) Wet wash

Question 9

11.2 Name the two materials that are most commonly used for bolts used in the aircraft maintenance industry.

a) Nickel & copper
b) Tin & lead
c) Alloy steel, stainless or corrosion-resistant steel

Answer 9

c) Alloy steel, stainless or corrosion-resistant steel

Question 10

11.2 With regard to aircraft construction, what type of fastener is used in areas where high strength is required?

a) Bolts
b) Pop rivets
c) Screws

Answer 10

a) Bolts

Question 11

11.3 What is the term used to identify the main body to which the wings & tail are attached?

a) The empennage
b) The fuselage
c) The body

Answer 11

b) The fuselage

Question 12

11.3 What is the advantage of a powered cargo loading system installed on some aircraft?

a) It protects the door sill & the adjacent aircraft structure from damage during loading & unloading
b) It can be used to keep cargo from shifting during flight and ground operations
c) It allows for quicker loading once the load is inside the cargo compartment of the aircraft

Answer 12

c) It allows for quicker loading once the load is inside the cargo compartment of the aircraft

Question 13

11.3 What does a pylon structure do?

a) It withstands the forces of landing when the aircraft is fully loaded
b) It carries the loads from the wings to transfer them to the remainder of the fuselage through longerons and beams
c) It transfers the thrust loads developed by the engines to the airframe through the wing spars

Answer 13

c) It transfers the thrust loads developed by the engines to the airframe through the wing spars

Question 14

11.3 What do the LE slat attachment fittings consist of?

a) They consist of 2 pairs of flap tracks
b) They consist of hinge fittings & attachment angles
c) They consist of brackets which support the guide rollers & the actuators

Answer 14

c) They consist of brackets which support the guide rollers & the actuators

Question 15

11.3 What do smaller aircraft often use to support the wings and carry the aerodynamic & landing loads?

a) They often use external struts or wires
b) They often use cables & struts
c) They often use ribs or bulkheads

Answer 15

a) They often use external struts or wires

Question 16

11.3 Which type of fuel tank is commonly used on a large modern aircraft?

a) Integral
b) Rigid removeable
c) Bladder

Answer 16

a) Integral

Question 17

11.3 How are the attachment points between vertical stabiliser & fuselage strengthened?

a) They are strengthened by body fittings, splice plates, & stiffeners
b) They are strengthened by tension bolts
c) They are strengthened by spars, ribs, stringers, & surface skins

Answer 17

a) They are strengthened by body fittings, splice plates, & stiffeners

Question 18

11.3 What is the name given to the fixed aerofoil structure which extends vertically from the empennage?

a) Elevator stabiliser
b) Vertical stabiliser
c) Horizontal stabiliser

Answer 18

b) Vertical stabiliser

Question 19

11.3 Where are the stabilisers located?

a) They are located at the front end of the fuselage
b) They are located at the trailing edge of the trim tabs
c) They are located at the aft end of the fuselage

Answer 19

c) They are located at the aft end of the fuselage

Question 20

11.3 What is mass balancing of a control surface?

a) It is where weights are added to the leading edge of the control surface following a repair
b) It is accomplished by aerodynamically balancing the flight control surface to reduce the forces required to deflect the control surface
c) It is accomplished when a portion of the control surface of the aircraft is extended out ahead of the hinge line

Answer 20

a) It is where weights are added to the leading edge of the control surface following a repair

Question 20

11.3 The flight control surfaces are aerodynamic devices, what do they allow the flight crew to do?

a) To maintain a constant speed during flight
b) To safely take off & land only
c) To adjust & control the aircrafts flight attitude

Answer 20

c) To adjust & control the aircrafts flight attitude

Question 21

11.3 What are spoiler panels normally constructed of?

a) They are constructed of an epoxy reinforced composite construction & a honeycomb core construction covered with aluminum skin
b) They can be constructed of an upper & lower metallic or composite skin with a honeycomb sandwich layer
c) They are constructed from a honeycomb core sandwich between thin upper & lower skins

Answer 21

b) They can be constructed of an upper & lower metallic or composite skin with a honeycomb sandwich layer

Question 22

11.3 Which statement with regard to the torque box is correct?

a) It is classed as a secondary structure & consists mainly of spars, ribs, & stringers
b) It is classed as a primary structure & consists mainly of spars, ribs, & stiffeners
c) It is classed as a tertiary structure & consists mainly of spars, ribs, & frames

Answer 22

b) It is classed as a primary structure & consists mainly of spars, ribs, & stiffeners

Question 23

11.3 How are the engine mounts usually secured to the aircraft?

a) With special heat-treated steel rivets
b) With special heat-treated titanium bolts
c) With special heat-treated steel bolts

Answer 23

c) With special heat-treated steel bolts

Question 24

11.3 Powerplants are divided into cooling zones by fireproof bulkheads (firewalls). What is the heat resistant material normally used?

a) Aluminum
b) Cat iron
c) Titanium

Answer 24

c) Titanium