Jose Antonio Vazquez
Quiz by , created more than 1 year ago

Tema 1 Avionics Quiz on 01. L01 (unidad 1 profesor), created by Jose Antonio Vazquez on 04/03/2018.

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Jose Antonio Vazquez
Created by Jose Antonio Vazquez almost 7 years ago
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01. L01 (unidad 1 profesor)

Question 1 of 28

1

Q1. It is not a function of the airframe

Select one of the following:

  • 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

Explanation

Question 2 of 28

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Q2. The use of biplanes at the beginning of the aviation was due to

Select one of the following:

  • Structural considerations

  • Aerodynamic considerations

  • A and B are true

  • A and B are false

Explanation

Question 3 of 28

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

Select one of the following:

  • 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

Explanation

Question 4 of 28

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Q4. The buckling is a phenomenon that appear in (i) structures subjected to (ii) loads

Select one of the following:

  • (i) wide (ii) tension

  • (i) wide (ii) compression

  • (i) thin (ii) tension

  • (i) thin (ii) compression

Explanation

Question 5 of 28

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Q1. What does the AXIAL STRESS consist on?

Select one of the following:

  • 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.

Explanation

Question 6 of 28

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Q2. The factor that doesn’t affect creep (elongation) is:

Select one of the following:

  • Material type

  • Temperature applied

  • Duration of the load

  • Type of object that produces it

Explanation

Question 7 of 28

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

Select one of the following:

  • 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

Explanation

Question 8 of 28

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Q4. What is DESIGN LIMIT LOAD OR DLL

Select one of the following:

  • 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

Explanation

Question 9 of 28

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Q5. The Safe life is based on:

Select one of the following:

  • Landings

  • Pressurisation cycles

  • Calendar time

  • All the above

Explanation

Question 10 of 28

1

Q6. About FAIL-SAFE STRUCTURE:

Select one of the following:

  • 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.

Explanation

Question 11 of 28

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Q7. DUL = Design Ultimate Load magnitude order in airplanes is:

Select one of the following:

  • X4

  • X5.5

  • X10

  • None of above

Explanation

Question 12 of 28

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Q.8 FRAME CONSTRUCTION in airplanes involves the use of mainly:

Select one of the following:

  • SEMI-MONOCOQUE STRUCTURES

  • MONOCOQUE STRUCTURES

  • BICOQUE STRUCTURES

  • BULB SHAPE STRUCTURES

Explanation

Question 13 of 28

1

Q.9 In regard to the pressurization of the plane:

Select one of the following:

  • 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

Explanation

Question 14 of 28

1

Q.10.PASSENGER CABIN WINDOWS

Select one of the following:

  • 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

Explanation

Question 15 of 28

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Q.11 ALUMINUM ALLOYS used in aviation:

Select one of the following:

  • 2024

  • 4070

  • 7075

  • A and C are correct

Explanation

Question 16 of 28

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Q.12 Which of the COMPONENTS OF WING STRUCTURE has holes to let fuel go throw?

Select one of the following:

  • Spars

  • Ribs

  • Stringers

  • Skin

Explanation

Question 17 of 28

1

Q.13 Which of these resins are used in aviation?

Select one of the following:

  • BLU-TACK

  • PTFE

  • A and B are true

  • A and B are false

Explanation

Question 18 of 28

1

Q.14 Which of the following materials has been introduced in contemporany times into the structure of new airplanes?

Select one of the following:

  • Aluminium

  • Steel Phosphate

  • Composites

  • Zinc plus Gold

Explanation

Question 19 of 28

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Q.15 According to the shape of fuselages, in which type of fuselage is common to find the area rule?

Select one of the following:

  • Subsonic

  • Supersonic

  • Both of them

  • None is correct

Explanation

Question 20 of 28

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

Select one of the following:

  • 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

Explanation

Question 21 of 28

1

Q.17 The torsion box:

Select one of the following:

  • 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

Explanation

Question 22 of 28

1

Q.18 From JAR 23s. Aircraft are categorised into 3 groups:

Select one of the following:

  • Normal, fixed wing aircraft and rotatory wing aircraft

  • Normal, utility and aerobatic

  • Normal, aerobatic and fixed wing aircraft

  • Normal, utility and rotatory wing aircraft

Explanation

Question 23 of 28

1

Q. 19 In combat aircraft the nose and forward fuselage is used to:

Select one of the following:

  • place the main intake ducts for engines

  • Minimize the length

  • Place secondary fuel tanks

  • Radar and laser-ranging installations

Explanation

Question 24 of 28

1

Q.20 According to monocoque structures, choose the right answer:

Select one of the following:

  • Are tubes with horizontal armours

  • The skin only supports ground loads

  • Are used in missiles

  • Are easy to design

Explanation

Question 25 of 28

1

Q.21 Which one is the main structural element that gives longitudinal strength?

Select one of the following:

  • Stringers

  • Formers

  • Longerons

  • Frames

Explanation

Question 26 of 28

1

Q.22 What elements support the pressure loads?

Select one of the following:

  • Bulkhead and skin

  • Stringers

  • Longerons

  • Longerons and frames

Explanation

Question 27 of 28

1

Q.23 The main objective of winglets is:

Select one of the following:

  • Delay the critical Mach

  • Increase the stall speed

  • Aesthetic reasons

  • Reduce wing tip vortices

  • Mal porque pone que es Aesthetic reasons

Explanation

Question 28 of 28

1

Q. 24 According to wing mounted engines:

Select one of the following:

  • 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

Explanation

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