AVIT 323 Final Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
What's the difference between an airfoil section and a wings platform? - CORRECT
ANSWER - An airfoil section is a side-view of the wing, amd the wing's planform is a top
down view
What is the difference between mean camber line and the chord line? - CORRECT
ANSWER - Mean camber: Divides an airfoil section in half between then upper and lower
cambers
Chord line: A straight line from the leading edge to the trailing edge
What are the two characteristics of a laminar flow boundary layer? - CORRECT
ANSWER - - Good for high speeds
- Leaves the wing surface at low speeds
Calculate the potential energy of an Archer weighing 2,500lbs if it is 0.5ft above the ground -
CORRECT ANSWER - 1250lbs
Law of Conservation of Energy - CORRECT ANSWER - Energy cannot be created or
destroyed
The amount of yawing moment that the rudder can generate is affected by which two factors? -
CORRECT ANSWER - Aerodynamic force / Distance from C.G. to rudder
A 100lb. weight is dropped from a height of 20ft. What is the Ep before it is dropped? -
CORRECT ANSWER - 2,000ft/lbs
What is the KE of the same weight at the moment of impact after falling 20 feet? - CORRECT
ANSWER - 2,000ft/lbs
, In order to increase CL, high lift devices... - CORRECT ANSWER - Any of these answers
AOA is measured between the - CORRECT ANSWER - Chord line and relative wind
Vortex generators increase lift by - CORRECT ANSWER - adding kinetic energy to the
boundary layer
An increase in air density affects the air density by - CORRECT ANSWER - Decreasing
Slots increase energy in the boundary layer by allowing air from below the wing to slip through
the wing during high AOA flight - CORRECT ANSWER - True
Fowler flaps increase a wings - CORRECT ANSWER - camber and surface area
The momentum change theory of lift production states that by accelerating airflow downward,
lift is created. This is explained by... - CORRECT ANSWER - Newton
The earth's atmosphere contains a constant amount of nitrogen, oxygen, and other gases but
increases in density with an increase in altitude - CORRECT ANSWER - False
The standard atmospheric values are - CORRECT ANSWER - - 15 degrees Celsius
- 59 degrees Fahrenheit
- 29.92"
Which best describes now lift is created? - CORRECT ANSWER - Newton and
Bernoulli's theories together
According to Bernoulli's principle; in a Venturi with mass flow, if dynamic pressure increases,
static pressure will? - CORRECT ANSWER - Decrease
Exam Questions and CORRECT Answers
What's the difference between an airfoil section and a wings platform? - CORRECT
ANSWER - An airfoil section is a side-view of the wing, amd the wing's planform is a top
down view
What is the difference between mean camber line and the chord line? - CORRECT
ANSWER - Mean camber: Divides an airfoil section in half between then upper and lower
cambers
Chord line: A straight line from the leading edge to the trailing edge
What are the two characteristics of a laminar flow boundary layer? - CORRECT
ANSWER - - Good for high speeds
- Leaves the wing surface at low speeds
Calculate the potential energy of an Archer weighing 2,500lbs if it is 0.5ft above the ground -
CORRECT ANSWER - 1250lbs
Law of Conservation of Energy - CORRECT ANSWER - Energy cannot be created or
destroyed
The amount of yawing moment that the rudder can generate is affected by which two factors? -
CORRECT ANSWER - Aerodynamic force / Distance from C.G. to rudder
A 100lb. weight is dropped from a height of 20ft. What is the Ep before it is dropped? -
CORRECT ANSWER - 2,000ft/lbs
What is the KE of the same weight at the moment of impact after falling 20 feet? - CORRECT
ANSWER - 2,000ft/lbs
, In order to increase CL, high lift devices... - CORRECT ANSWER - Any of these answers
AOA is measured between the - CORRECT ANSWER - Chord line and relative wind
Vortex generators increase lift by - CORRECT ANSWER - adding kinetic energy to the
boundary layer
An increase in air density affects the air density by - CORRECT ANSWER - Decreasing
Slots increase energy in the boundary layer by allowing air from below the wing to slip through
the wing during high AOA flight - CORRECT ANSWER - True
Fowler flaps increase a wings - CORRECT ANSWER - camber and surface area
The momentum change theory of lift production states that by accelerating airflow downward,
lift is created. This is explained by... - CORRECT ANSWER - Newton
The earth's atmosphere contains a constant amount of nitrogen, oxygen, and other gases but
increases in density with an increase in altitude - CORRECT ANSWER - False
The standard atmospheric values are - CORRECT ANSWER - - 15 degrees Celsius
- 59 degrees Fahrenheit
- 29.92"
Which best describes now lift is created? - CORRECT ANSWER - Newton and
Bernoulli's theories together
According to Bernoulli's principle; in a Venturi with mass flow, if dynamic pressure increases,
static pressure will? - CORRECT ANSWER - Decrease
