10 Questions
True or false: An airfoil is a streamlined body that produces more lift than drag when set at a suitable angle of attack.
True
True or false: The mean camber line is the line joining the midpoints between the upper and lower surfaces of an airfoil and measured parallel to the chord line.
False
True or false: The chord line is the line joining the end points of the mean camber line.
True
True or false: The thickness of an airfoil is the height of profile measured parallel to the chord line.
False
True or false: The thickness ratio of an airfoil is the maximum thickness to chord ratio, t/c.
True
True or false: The camber of an airfoil is the maximum distance of the mean camber line from the chord line.
True
True or false: The leading-edge radius of an airfoil is the radius of a circle tangent to the upper and lower surfaces, with its center located on a tangent to the mean camber line drawn through the leading edge of this line.
True
True or false: The resultant of all the pressure and shear forces acting on an airfoil can be represented by a single aerodynamic force known as lift.
False
True or false: The resultant of all the pressure and shear forces acting on an airfoil can be resolved into two components: lift and drag.
True
True or false: The mean camber line of an airfoil is the line joining the midpoints between the upper and lower surfaces, measured normal to the chord line.
False
Study Notes
Airfoil Characteristics
- An airfoil is a streamlined body that produces more lift than drag when set at a suitable angle of attack.
- The mean camber line is the line joining the midpoints between the upper and lower surfaces of an airfoil, measured normal to the chord line.
- The chord line is the line joining the end points of the mean camber line.
Airfoil Dimensions
- Thickness is the height of the airfoil profile measured normal to the chord line.
- Thickness ratio is the maximum thickness to chord ratio, represented as t/c.
- Camber is the maximum distance of the mean camber line from the chord line.
- Leading edge radius is the radius of a circle tangent to the upper and lower surfaces, with its center located on a tangent to the mean camber line drawn through the leading edge.
Aerodynamic Forces
- The summation of all pressure and shear forces can be represented by a single aerodynamic force known as the resultant.
- The resultant can be resolved into two components: lift and drag.
- Lift is the component perpendicular to the relative wind.
- Drag is the component parallel to the relative wind.
Test your knowledge on airfoil design and terminology with this quiz! Learn about the mean camber line, chord line, and thickness of an airfoil, and how they contribute to lift and drag. Perfect for aviation enthusiasts and engineering students.
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