CPAER GENERAL KNOWLEDGE - SHARPER EDGE
UPDATED QUESTIONS AND ACCURATE ANSWERS
GRADED A+
Chord - CORRECT ANSWER✅✅✅Straight line joining leading edge to the trailing edge
Camber line - CORRECT ANSWER✅✅✅Line which runs midway between upper and
lower surfaces of the airfoil joint the trailing and leading edge.
Camber - CORRECT ANSWER✅✅✅The measure of the curvature of the airfoil.
Expressed as a percentage
Angle of attack - CORRECT ANSWER✅✅✅The angle between the chord of the wing and
the relative airflow
Centre of pressure - CORRECT ANSWER✅✅✅Lift and drag act through the centre of
pressure of the wing. The centre of pressure moves with a change in the angle of attack.
Centre of gravity - CORRECT ANSWER✅✅✅The point through which the resultant of the
weight of all of the components on the aircraft can be considered to act.
The centre of ____ is ahead of the centre of _____. - CORRECT ANSWER✅✅✅Gravity,
pressure.
Axes of rotation - CORRECT ANSWER✅✅✅Three axes which rotate about the aircrafts
centre of gravity
Lateral axis associated with... - CORRECT ANSWER✅✅✅Pitch
, Longitudinal axis associated with... - CORRECT ANSWER✅✅✅Roll
Vertical axis associated with.... - CORRECT ANSWER✅✅✅Yaw
Lift acts... - CORRECT ANSWER✅✅✅Perpendicular to relative airflow
Weight acts... - CORRECT ANSWER✅✅✅Towards the centre of earth (gravity)
Thrust acts... - CORRECT ANSWER✅✅✅Along the longitudinal axis in the direction of
motion
Drag acts... - CORRECT ANSWER✅✅✅Parallel to relative airflow
Aspect ratio - CORRECT ANSWER✅✅✅The measure of the slenderness of a wing.
The ratio of the wing span to the wing chord.
Wings with a ___ aspect ratio are more efficient and aerodynamic. Why? - CORRECT
ANSWER✅✅✅High because they produce less induced drag.
Laminar flow wings - CORRECT ANSWER✅✅✅Keep the airflow laminar much further
back along the wing reducing drag.
Maximum thickness of the wing occurs much further back.
Disadvantage of laminar flow wings? - CORRECT ANSWER✅✅✅Abrupt stall behaviour
Substantial drag increase when contaminated.
UPDATED QUESTIONS AND ACCURATE ANSWERS
GRADED A+
Chord - CORRECT ANSWER✅✅✅Straight line joining leading edge to the trailing edge
Camber line - CORRECT ANSWER✅✅✅Line which runs midway between upper and
lower surfaces of the airfoil joint the trailing and leading edge.
Camber - CORRECT ANSWER✅✅✅The measure of the curvature of the airfoil.
Expressed as a percentage
Angle of attack - CORRECT ANSWER✅✅✅The angle between the chord of the wing and
the relative airflow
Centre of pressure - CORRECT ANSWER✅✅✅Lift and drag act through the centre of
pressure of the wing. The centre of pressure moves with a change in the angle of attack.
Centre of gravity - CORRECT ANSWER✅✅✅The point through which the resultant of the
weight of all of the components on the aircraft can be considered to act.
The centre of ____ is ahead of the centre of _____. - CORRECT ANSWER✅✅✅Gravity,
pressure.
Axes of rotation - CORRECT ANSWER✅✅✅Three axes which rotate about the aircrafts
centre of gravity
Lateral axis associated with... - CORRECT ANSWER✅✅✅Pitch
, Longitudinal axis associated with... - CORRECT ANSWER✅✅✅Roll
Vertical axis associated with.... - CORRECT ANSWER✅✅✅Yaw
Lift acts... - CORRECT ANSWER✅✅✅Perpendicular to relative airflow
Weight acts... - CORRECT ANSWER✅✅✅Towards the centre of earth (gravity)
Thrust acts... - CORRECT ANSWER✅✅✅Along the longitudinal axis in the direction of
motion
Drag acts... - CORRECT ANSWER✅✅✅Parallel to relative airflow
Aspect ratio - CORRECT ANSWER✅✅✅The measure of the slenderness of a wing.
The ratio of the wing span to the wing chord.
Wings with a ___ aspect ratio are more efficient and aerodynamic. Why? - CORRECT
ANSWER✅✅✅High because they produce less induced drag.
Laminar flow wings - CORRECT ANSWER✅✅✅Keep the airflow laminar much further
back along the wing reducing drag.
Maximum thickness of the wing occurs much further back.
Disadvantage of laminar flow wings? - CORRECT ANSWER✅✅✅Abrupt stall behaviour
Substantial drag increase when contaminated.
