Avit 323- Block 9 (Dilse) Comprehensive
Questions (Frequently Tested) with
Verified Answers Graded A+
What are the two axis labeled on a stall diagram sheet - Answer: Coefficient of lift
Angle of attack
Planform - Answer: the shape of the wing viewed from above
Chord line - Answer: An imaginary straight line from the leading edge to the trailing edge of an
airfoil.
Camber - Answer: A measure of the curvature of the airfoil.
Adverse pressure gradient - Answer: A pressure gradient of increasing static pressure in the
direction of airflow.
Aspect ratio - Answer: The relationship of width to height
-High aspect ratio: longer wing (glider)
-Low aspect ratio: shorter wing (fighter)
Bernoullis principle - Answer: as the velocity of a fluid increases, the pressure exerted by the
fluid decreases
Magnus Effect - Answer: Deviation in the trajectory of a spinning object toward the direction of
spin
, Newtons 1 law - Answer: An object at rest stays at rest and an object in motion stays in motion
with the same speed and in the same direction unless acted upon by an unbalanced force.
Newtons 2 law - Answer: Force=MA
Newtons 3 law - Answer: For every action there is an equal and opposite reaction
Conservation of mass - Answer: the principle stating that matter is not created or destroyed
during a chemical reaction
Conservation of energy - Answer: Energy cannot be created or destroyed
Laminar flow - Answer: Flows in parallel lines in a smooth progression
-Higher stall speed
-Separates earlier
-More pressure drag
-Less viscus drag
Turbulent flow - Answer: Irregular flow with random variations in pressure.
-Lower stall speed
-Separates later
-Less pressure drag
-More viscus drag
Describe a stall - Answer: when the airplane exceeds the critical angle of attack and is unable to
produce lift
Questions (Frequently Tested) with
Verified Answers Graded A+
What are the two axis labeled on a stall diagram sheet - Answer: Coefficient of lift
Angle of attack
Planform - Answer: the shape of the wing viewed from above
Chord line - Answer: An imaginary straight line from the leading edge to the trailing edge of an
airfoil.
Camber - Answer: A measure of the curvature of the airfoil.
Adverse pressure gradient - Answer: A pressure gradient of increasing static pressure in the
direction of airflow.
Aspect ratio - Answer: The relationship of width to height
-High aspect ratio: longer wing (glider)
-Low aspect ratio: shorter wing (fighter)
Bernoullis principle - Answer: as the velocity of a fluid increases, the pressure exerted by the
fluid decreases
Magnus Effect - Answer: Deviation in the trajectory of a spinning object toward the direction of
spin
, Newtons 1 law - Answer: An object at rest stays at rest and an object in motion stays in motion
with the same speed and in the same direction unless acted upon by an unbalanced force.
Newtons 2 law - Answer: Force=MA
Newtons 3 law - Answer: For every action there is an equal and opposite reaction
Conservation of mass - Answer: the principle stating that matter is not created or destroyed
during a chemical reaction
Conservation of energy - Answer: Energy cannot be created or destroyed
Laminar flow - Answer: Flows in parallel lines in a smooth progression
-Higher stall speed
-Separates earlier
-More pressure drag
-Less viscus drag
Turbulent flow - Answer: Irregular flow with random variations in pressure.
-Lower stall speed
-Separates later
-Less pressure drag
-More viscus drag
Describe a stall - Answer: when the airplane exceeds the critical angle of attack and is unable to
produce lift
