Aircraft Design Classification Quiz

17 Questions

What are two requirements placed upon load bearing members?

Specific Strength and Minimum Mass

Which components make up the longitudinal framework of load bearing members?

Spars, False Spars, and Stringers

What type of forces do ribs primarily take in an aircraft structure?

Aerodynamical loads

In what sections do ribs take the forces of intrinsic pressure?

In tank sections

What is the purpose of a 'spar' in an aircraft structure?

To take bending moment, lateral force, and torque

What are the two types of rib designs mentioned in the text?

Normal and Reinforced ribs

What is the primary factor used to classify aircraft based on purpose?

Range

Which of the following airfoil section shapes is described as having high lift ability and being applied to low-speed aircraft?

Convex-concave

What is the typical range of values for the coefficient of drag (c) for supersonic aircraft?

c = 3...9%

Which airfoil section shape is described as having the lowest drag at high subsonic speeds?

Symmetrical

What is the purpose of lenticular airfoils, according to the text?

They have acute edges

Which airfoil section shape is described as theoretically the most useful for supersonic (hypersonic) speeds?

Double wedge

What is the primary function of high-lift devices on the wings of an aircraft?

To increase the aircraft's lift during takeoff and landing

Which of the following is NOT a type of high-lift device on the trailing edge of the wing?

Krueger flap

What is the primary purpose of using an adaptive wing on an aircraft?

All of the above

Which of the following is a device used to increase the aircraft's drag during landing or deceleration?

Spoilers

Which of the following is a high-lift device used on the leading edge of the wing?