Podcast
Questions and Answers
What is the force that attracts all material objects to the earth?
What is the force that attracts all material objects to the earth?
- Thrust
- Drag
- Lift
- Gravity (correct)
What is necessary to generate the required lifting force?
What is necessary to generate the required lifting force?
- Lightweight wing
- Stationary wing
- Relative movement between the wing and the air (correct)
- Large wing size
What is the purpose of the aerofoil-shaped cross-sections of an aircraft wing?
What is the purpose of the aerofoil-shaped cross-sections of an aircraft wing?
- To increase thrust
- To generate lift (correct)
- To decrease weight
- To reduce drag
What determines the choice of wing design for an aircraft?
What determines the choice of wing design for an aircraft?
What is the role of the propeller or turbojet in generating lift?
What is the role of the propeller or turbojet in generating lift?
What is the relationship between the mass of an object and the force of gravity?
What is the relationship between the mass of an object and the force of gravity?
What are the two classes of aircraft being considered?
What are the two classes of aircraft being considered?
What must be opposed in order for an object to rise from the earth's surface and maintain itself in a continual ascent or at a constant height?
What must be opposed in order for an object to rise from the earth's surface and maintain itself in a continual ascent or at a constant height?
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Study Notes
Understanding Aircraft Flight and Control
Fixed-Wing Aircraft
- Lift: a force that opposes gravity, necessary to rise from the earth's surface and maintain a constant height
- Gravity: a force that attracts all material objects to the earth, proportional to the object's mass
- Wing design: specific plan forms and aerofoil-shaped cross-sections chosen based on size, weight, and performance requirements of the aircraft
- Wing geometry: typical plan forms, aerofoil cross-sections, and associated terminology (as shown in fig. 1.1)
- Lifting force generation: requires relative movement between the wing and surrounding air
- Practical implementation: the wing is moved through the air due to propulsive thrust from a propeller or turbine
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