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01. L01 (unidad 1 profesor)

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Tema 1 Avionics Quiz on 01. L01 (unidad 1 profesor), created by Jose Antonio Vazquez on 04/03/2018.
Jose Antonio Vazquez
Quiz by Jose Antonio Vazquez, updated more than 1 year ago
Jose Antonio Vazquez
Created by Jose Antonio Vazquez over 6 years ago
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Resource summary

Question 1

Question
Q1. It is not a function of the airframe
Answer
  • 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

Question 2

Question
Q2. The use of biplanes at the beginning of the aviation was due to
Answer
  • Structural considerations
  • Aerodynamic considerations
  • A and B are true
  • A and B are false

Question 3

Question
Q3. The failure of the Langley flight in 1903 was a consequence of
Answer
  • 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

Question 4

Question
Q4. The buckling is a phenomenon that appear in (i) structures subjected to (ii) loads
Answer
  • (i) wide (ii) tension
  • (i) wide (ii) compression
  • (i) thin (ii) tension
  • (i) thin (ii) compression

Question 5

Question
Q1. What does the AXIAL STRESS consist on?
Answer
  • 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.

Question 6

Question
Q2. The factor that doesn’t affect creep (elongation) is:
Answer
  • Material type
  • Temperature applied
  • Duration of the load
  • Type of object that produces it

Question 7

Question
Q3. Which of the following events does not produce SHOCK LOADS?
Answer
  • 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

Question 8

Question
Q4. What is DESIGN LIMIT LOAD OR DLL
Answer
  • 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

Question 9

Question
Q5. The Safe life is based on:
Answer
  • Landings
  • Pressurisation cycles
  • Calendar time
  • All the above

Question 10

Question
Q6. About FAIL-SAFE STRUCTURE:
Answer
  • 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.

Question 11

Question
Q7. DUL = Design Ultimate Load magnitude order in airplanes is:
Answer
  • X4
  • X5.5
  • X10
  • None of above

Question 12

Question
Q.8 FRAME CONSTRUCTION in airplanes involves the use of mainly:
Answer
  • SEMI-MONOCOQUE STRUCTURES
  • MONOCOQUE STRUCTURES
  • BICOQUE STRUCTURES
  • BULB SHAPE STRUCTURES

Question 13

Question
Q.9 In regard to the pressurization of the plane:
Answer
  • 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

Question 14

Question
Q.10.PASSENGER CABIN WINDOWS
Answer
  • 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

Question 15

Question
Q.11 ALUMINUM ALLOYS used in aviation:
Answer
  • 2024
  • 4070
  • 7075
  • A and C are correct

Question 16

Question
Q.12 Which of the COMPONENTS OF WING STRUCTURE has holes to let fuel go throw?
Answer
  • Spars
  • Ribs
  • Stringers
  • Skin

Question 17

Question
Q.13 Which of these resins are used in aviation?
Answer
  • BLU-TACK
  • PTFE
  • A and B are true
  • A and B are false

Question 18

Question
Q.14 Which of the following materials has been introduced in contemporany times into the structure of new airplanes?
Answer
  • Aluminium
  • Steel Phosphate
  • Composites
  • Zinc plus Gold

Question 19

Question
Q.15 According to the shape of fuselages, in which type of fuselage is common to find the area rule?
Answer
  • Subsonic
  • Supersonic
  • Both of them
  • None is correct

Question 20

Question
Q.16 Which are the three spars normally used in a large aircraft?
Answer
  • 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

Question 21

Question
Q.17 The torsion box:
Answer
  • 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

Question 22

Question
Q.18 From JAR 23s. Aircraft are categorised into 3 groups:
Answer
  • Normal, fixed wing aircraft and rotatory wing aircraft
  • Normal, utility and aerobatic
  • Normal, aerobatic and fixed wing aircraft
  • Normal, utility and rotatory wing aircraft

Question 23

Question
Q. 19 In combat aircraft the nose and forward fuselage is used to:
Answer
  • place the main intake ducts for engines
  • Minimize the length
  • Place secondary fuel tanks
  • Radar and laser-ranging installations

Question 24

Question
Q.20 According to monocoque structures, choose the right answer:
Answer
  • Are tubes with horizontal armours
  • The skin only supports ground loads
  • Are used in missiles
  • Are easy to design

Question 25

Question
Q.21 Which one is the main structural element that gives longitudinal strength?
Answer
  • Stringers
  • Formers
  • Longerons
  • Frames

Question 26

Question
Q.22 What elements support the pressure loads?
Answer
  • Bulkhead and skin
  • Stringers
  • Longerons
  • Longerons and frames

Question 27

Question
Q.23 The main objective of winglets is:
Answer
  • Delay the critical Mach
  • Increase the stall speed
  • Aesthetic reasons
  • Reduce wing tip vortices
  • Mal porque pone que es Aesthetic reasons

Question 28

Question
Q. 24 According to wing mounted engines:
Answer
  • 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
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