Podcast
Questions and Answers
What is the stress defined as pull and is the stress of stretching an object?
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?
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?
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?
What is the tail end of an aircraft that helps with stability using assistance from the rudder and elevator called?
Which flight control component controls movement about the longitudinal axis of an aircraft?
Which flight control component controls movement about the longitudinal axis of an aircraft?
What is the purpose of SPOILERS on an aircraft?
What is the purpose of SPOILERS on an aircraft?
Which material is predominantly used in the body of the Boeing 787?
Which material is predominantly used in the body of the Boeing 787?
What percentage of composites are used in the Airbus A350 wings?
What percentage of composites are used in the Airbus A350 wings?
Which aircraft uses alloys like Al/Al-Li and steel in its construction?
Which aircraft uses alloys like Al/Al-Li and steel in its construction?
What are SLATS on an aircraft primarily used for?
What are SLATS on an aircraft primarily used for?
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.
