PRIVATE PILOT EXAM - ASA
CHAPTER 1: BASIC AERODYNAMICS
QUESTIONS & ANSWERS
Airfoil - Correct Answers -is a structure or body which produces a useful reaction to air
movement. Airplane wings, helicopter rotor blades and propellers are airfoils.
Chord Line - Correct Answers -is an imaginary straight line from the leading edge to the
trailing edge of an airfoil. Changing the shape of an airfoil will change the chord line
relative wind - Correct Answers -is the wind relative to the airfoil. it is created by the
movement of air past an airfoil, by the motion of an airfoil through the air, or by a
combination of the two.
angle of attack - Correct Answers -is the angle between the chord line of the airfoil and
the relative wind. By manipulating the aircraft controls, the pilot can vary the angle of
attack
angle of incidence - Correct Answers -is the angle at which a wing is attached to the
aircraft fuselage. The airplane pilot has not control of the angle of incidence
lateral axis - Correct Answers -is an imaginary line from wingtip to wingtip for an
airplane
pitch - Correct Answers -is the rotation around the lateral axis, and is controlled by the
airplane's elevators, or by pushing the yoke forward or pulling it backwards
longitudinal control or longitudinal stability - Correct Answers -is the rotation along the
lateral axis, or pitch
Flaps - Correct Answers -They increase the airplane's camber, which increases lift and
induced drag
Ground effect - Correct Answers -occurs when flying within one wingspan or less above
the surface. The airflow around the wing and wing tips is modified and the resulting
pattern reduces the down wash and the induced drag
CHAPTER 1: BASIC AERODYNAMICS
QUESTIONS & ANSWERS
Airfoil - Correct Answers -is a structure or body which produces a useful reaction to air
movement. Airplane wings, helicopter rotor blades and propellers are airfoils.
Chord Line - Correct Answers -is an imaginary straight line from the leading edge to the
trailing edge of an airfoil. Changing the shape of an airfoil will change the chord line
relative wind - Correct Answers -is the wind relative to the airfoil. it is created by the
movement of air past an airfoil, by the motion of an airfoil through the air, or by a
combination of the two.
angle of attack - Correct Answers -is the angle between the chord line of the airfoil and
the relative wind. By manipulating the aircraft controls, the pilot can vary the angle of
attack
angle of incidence - Correct Answers -is the angle at which a wing is attached to the
aircraft fuselage. The airplane pilot has not control of the angle of incidence
lateral axis - Correct Answers -is an imaginary line from wingtip to wingtip for an
airplane
pitch - Correct Answers -is the rotation around the lateral axis, and is controlled by the
airplane's elevators, or by pushing the yoke forward or pulling it backwards
longitudinal control or longitudinal stability - Correct Answers -is the rotation along the
lateral axis, or pitch
Flaps - Correct Answers -They increase the airplane's camber, which increases lift and
induced drag
Ground effect - Correct Answers -occurs when flying within one wingspan or less above
the surface. The airflow around the wing and wing tips is modified and the resulting
pattern reduces the down wash and the induced drag
