Aircraft Structural Components and Major Stresses Quiz
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Questions and Answers

What is the stress defined as pull and is the stress of stretching an object?

  • Torsional stress
  • Bending stress
  • Shear stress (correct)
  • Compression stress
  • In an aircraft structure, which stress is exerted when two pieces of fastened material tend to separate?

  • Compression stress
  • Shear stress (correct)
  • Torsional stress
  • Bending stress
  • Which component generates the lifting force needed for flight in an aircraft?

  • Engine
  • Wing (correct)
  • Fuselage
  • Landing gear
  • What is the tail end of an aircraft that helps with stability using assistance from the rudder and elevator called?

    <p>Empennage</p> Signup and view all the answers

    Which flight control component controls movement about the longitudinal axis of an aircraft?

    <p>Primary ailerons</p> Signup and view all the answers

    What is the purpose of SPOILERS on an aircraft?

    <p>Reduce drag by controlling lift</p> Signup and view all the answers

    Which material is predominantly used in the body of the Boeing 787?

    <p>Carbon laminate composite</p> Signup and view all the answers

    What percentage of composites are used in the Airbus A350 wings?

    <p>53%</p> Signup and view all the answers

    Which aircraft uses alloys like Al/Al-Li and steel in its construction?

    <p>Airbus A350</p> Signup and view all the answers

    What are SLATS on an aircraft primarily used for?

    <p>Increasing lift at low speeds</p> Signup and view all the answers

    Study Notes

    Aircraft Components

    • Wings consist of flaps, slats, and spoilers, which are high-lift devices used to increase lift during takeoff and landing
    • Flaps are hinged panels on the trailing edge of the wing, while slats are extendable high-lift devices on the leading edge
    • Spoilers intentionally reduce lift to control airflow

    Materials Used in Aviation

    • Materials used in the 787 body:
      • Carbon sandwich composite
      • Fiberglass
      • Aluminum
      • Carbon laminate composite
    • Composition of 787 body:
      • 50% composites
      • 20% aluminum
      • 10% steel
      • 5% titanium
      • 15% miscellaneous
    • Airbus A350 composition:
      • 19% Al/Al-Li
      • 6% steel
      • 53% CFRP (composites)
      • 22% others

    Aircraft Stresses

    • Torsion: twisting force, e.g., engine crankshaft while running
    • Shear: pulling apart, e.g., two fastened materials tend to separate
    • Bending: combination of tension and compression
    • Compression: forces acting towards each other, squeezing material

    Aircraft Components and Functions

    • Engine: includes engine and propeller, necessary for aircraft function
    • Fuselage: main structure, providing space for personnel, cargo, controls, and accessories
    • Wing: generates lifting force, also known as foils
    • Empennage: tail end, helps with stability, assisted by rudder and elevator
    • Landing Gear: includes wheels and shock absorbers

    Flight Controls

    • Primary Controls:
      • Ailerons: control movement about the longitudinal axis
      • Rudder: controls rotation about the vertical axis
      • Elevator: controls movement about the lateral axis

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    Description

    Test your knowledge on the structural components and major stresses in aircraft. Learn about torsion, tension, shear, bending, and compression in aircraft structures.

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