This lesson is a basic introduction to the theory of aerodynamics. It provides a knowledge base in aerodynamic mathematics, air properties, airspeed and altitude definitions and measurements, airfoil and wing design, and the importance of center of gravity (CG).
the force with which a mass is attracted toward the center of the earth
the result of mass x acceleration
a body’s capacity to do work
created when a force is applied at some distance from an axis or fulcrum, producing
rotation about that point
Question 2
Question
Mass per unit of volume defines which of the following?
Answer
Work
Play
Density
Power
Question 3
Question
Potential energy is ______.
Answer
the ability of a body to do work due to its motion
dependent on mass and velocity
a scalar measure of a body’s capacity to do work
the ability of a body to do work due to its position or state of being
Question 4
Question
The Law of Interaction states ______.
Answer
“For every action there is an equal and opposite reaction.”
“A body at rest tends to stay at rest.”
“Two opposite forces cannot interact.”
“An unbalanced force acting upon a body produces an acceleration in the direction of the force that is directly proportional to the force and inversely proportional to the mass of the body.”
Question 5
Question
True airspeed will be ______ indicated airspeed at 10,000 feet MSL.
Answer
less than
equal to
greater than
not enough information to determine
Question 6
Question
The chord of an airfoil is defined as ______.
Answer
the angle between the longitudinal axis and the horizon
a measure of the wing along the chordline, from the leading edge to the trailing edge
an infinitely long line drawn through the leading and trailing edges of an airfoil
the length of a wing
Question 7
Question
Air density is _____ at 10,000 feet compared to ______ feet.
Answer
lower/5000
equal/5000
equal/20,000
lower/20,000
Question 8
Question
The altimeter setting for standard day where pressure altitude equals true altitude is ______in-Hg.
Answer
29.92
92.29
92.92
1013.2
Question 9
Question
The center of gravity is the point at which ______.
Answer
lift is generated
all aerodynamic forces are concentrated
elevator authority is lost
all weight is concentrated
Question 10
Question
The ______ axis is which the aircraft nose moves left or right about the center of gravity.