Q1. It is not a function of the airframe
Transmit the loads
Allow the taxiing of the aircraft in the airport
Provide the aerodynamic configuration in every flight condition
Protect the payload from the environmental conditions
Q2. The use of biplanes at the beginning of the aviation was due to
Structural considerations
Aerodynamic considerations
A and B are true
A and B are false
Q3. The failure of the Langley flight in 1903 was a consequence of
A defect of velocity to generate enough lift force
A lack of wing stiffness
A wrong aerodynamic wing design
The interference between the front and rear wings
Q4. The buckling is a phenomenon that appear in (i) structures subjected to (ii) loads
(i) wide (ii) tension
(i) wide (ii) compression
(i) thin (ii) tension
(i) thin (ii) compression
Q1. What does the AXIAL STRESS consist on?
It occurs when the aircraft is pressurised and the pressure hull lengthens.
Stress raised in a container when it is filled, where the contents act to expand the container.
It occurs when an structure is subject to several different loads.
It produces Stress Cracks due to tension and compression.
Q2. The factor that doesn’t affect creep (elongation) is:
Material type
Temperature applied
Duration of the load
Type of object that produces it
Q3. Which of the following events does not produce SHOCK LOADS?
Bird strike directly on to the compressor blades of a jet engine
Heavy landing
Old rubber band stretches and then fails before the normal load is applied
High intensity wind gust
Q4. What is DESIGN LIMIT LOAD OR DLL
This is the maximum load that the aircraft designer or component manufacturer expects the airframe or component to be subject to in operation.
After the aircraft has been subject to this load, there may be permanent deformation of the aircraft’s structure, but it must not collapse.
Is equal to the safety factor multiplied by 2
Load which produces a catastrophic failure
Q5. The Safe life is based on:
Landings
Pressurisation cycles
Calendar time
All the above
Q6. About FAIL-SAFE STRUCTURE:
Structure safe because one strong takes the entire load.
Allows the structure to continue operating normally up to the static ultimate permanently.
Damage would be found by luck because the structure does not show any problem.
Extra structural items have a weight penalty, and this has led to a change toward designing damage-tolerant structures.
Q7. DUL = Design Ultimate Load magnitude order in airplanes is:
X4
X5.5
X10
None of above
Q.8 FRAME CONSTRUCTION in airplanes involves the use of mainly:
SEMI-MONOCOQUE STRUCTURES
MONOCOQUE STRUCTURES
BICOQUE STRUCTURES
BULB SHAPE STRUCTURES
Q.9 In regard to the pressurization of the plane:
It has a Front Pressure Bulkhead
It has a TOP Pressure Bulkhead
The plane is completely pressurized to avoid internal forces
The Pressure is different depending of the seat that you occupy
Q.10.PASSENGER CABIN WINDOWS
Are essential for temperature regulation
The higher pressure of the outside can make them break in mid air
Are non-FAIL-SAFE STRUCTURE
Are points where the structure weakens
Q.11 ALUMINUM ALLOYS used in aviation:
2024
4070
7075
A and C are correct
Q.12 Which of the COMPONENTS OF WING STRUCTURE has holes to let fuel go throw?
Spars
Ribs
Stringers
Skin
Q.13 Which of these resins are used in aviation?
BLU-TACK
PTFE
Q.14 Which of the following materials has been introduced in contemporany times into the structure of new airplanes?
Aluminium
Steel Phosphate
Composites
Zinc plus Gold
Q.15 According to the shape of fuselages, in which type of fuselage is common to find the area rule?
Subsonic
Supersonic
Both of them
None is correct
Q.16 Which are the three spars normally used in a large aircraft?
Front spar, forward spar and main spar
Front spar, rear spar and auxiliary spar
Forward spar, main spar and auxiliary spar
Front spar, forward spar and rear spar
Q.17 The torsion box:
Increases the rigidity of the wing and resists the twisting and bending motion
Increases the mass of material used during the construction and due to this the weight is increased
Is formed between the spars and the stringers
Is the best structure to resist the compression forces
Q.18 From JAR 23s. Aircraft are categorised into 3 groups:
Normal, fixed wing aircraft and rotatory wing aircraft
Normal, utility and aerobatic
Normal, aerobatic and fixed wing aircraft
Normal, utility and rotatory wing aircraft
Q. 19 In combat aircraft the nose and forward fuselage is used to:
place the main intake ducts for engines
Minimize the length
Place secondary fuel tanks
Radar and laser-ranging installations
Q.20 According to monocoque structures, choose the right answer:
Are tubes with horizontal armours
The skin only supports ground loads
Are used in missiles
Are easy to design
Q.21 Which one is the main structural element that gives longitudinal strength?
Formers
Longerons
Frames
Q.22 What elements support the pressure loads?
Bulkhead and skin
Longerons and frames
Q.23 The main objective of winglets is:
Delay the critical Mach
Increase the stall speed
Aesthetic reasons
Reduce wing tip vortices
Mal porque pone que es Aesthetic reasons
Q. 24 According to wing mounted engines:
Engines are joined to the wing structure by a pylon
The pylon is attached to the front and mains spars
In flight, the weight of the engine balances the aerodynamic loads (lift)
All of them are right
