AVIT 323 FINAL EXAM WITH ALL CORRECT & 100%
VERIFIED ANSWERS|ALREADY GRADED A+
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
Which wing exhibits the most favorable stall characteristics? Correct answer-Rectangular
What is considered "favorable stall characteristics" Correct answer-Stalling at the wing root first to
enable good slow flight control with ailerons
The CG Correct answer-Is a point where the sum of weight vectors of every party of the aircraft act
The following is a practical application of the Bernoulli's theorem Correct answer-The Venturi
At what height is experienced half the weight of the atmosphere? Correct answer-18,000 feet
What affects total lift production Correct answer-The net effect of airflow around the airfoil
Bernoulli's Principle would show Correct answer-A decrease in the speed of flow would cause
increase in the fluids static pressure
Most of the weather is contained in which layer of the atmosphere? Correct answer-Troposphere
What two things in the lift equation can you control directly to affect lift while maneuvering the
aircraft? Correct answer-Coefficient of Lift and Velocity
What best describes the turning of air around a rotating cylinder that generates up-wash, down
wash, and lift Correct answer-Magnus effect
Ozone exposure is greater in which part of the atmosphere? Correct answer-Lower stratosphere
Drag is... Correct answer-Resistance to airflow
Parasite drag is the sum of... Correct answer-Pressure drag and drag caused by skin friction
Viscosity is part of the reason air separates from the surface of the wing Correct answer-True
The boundary layer is Correct answer-The area between the surface of the wing and free stream
air
The area where laminar becomes turbulent is called? Correct answer-Transition region
Separation along an aerodynamic object occurs because Correct answer-Because of adverse
pressure gradient and the shape of the object
Ground effect has a tendency to make an airplane behave like it has a Correct answer-higher
aspect ratio
When a wing is within 1/10 of its span to the surface, its induced drag is reduced Correct answer-
by nearly half
VERIFIED ANSWERS|ALREADY GRADED A+
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
Which wing exhibits the most favorable stall characteristics? Correct answer-Rectangular
What is considered "favorable stall characteristics" Correct answer-Stalling at the wing root first to
enable good slow flight control with ailerons
The CG Correct answer-Is a point where the sum of weight vectors of every party of the aircraft act
The following is a practical application of the Bernoulli's theorem Correct answer-The Venturi
At what height is experienced half the weight of the atmosphere? Correct answer-18,000 feet
What affects total lift production Correct answer-The net effect of airflow around the airfoil
Bernoulli's Principle would show Correct answer-A decrease in the speed of flow would cause
increase in the fluids static pressure
Most of the weather is contained in which layer of the atmosphere? Correct answer-Troposphere
What two things in the lift equation can you control directly to affect lift while maneuvering the
aircraft? Correct answer-Coefficient of Lift and Velocity
What best describes the turning of air around a rotating cylinder that generates up-wash, down
wash, and lift Correct answer-Magnus effect
Ozone exposure is greater in which part of the atmosphere? Correct answer-Lower stratosphere
Drag is... Correct answer-Resistance to airflow
Parasite drag is the sum of... Correct answer-Pressure drag and drag caused by skin friction
Viscosity is part of the reason air separates from the surface of the wing Correct answer-True
The boundary layer is Correct answer-The area between the surface of the wing and free stream
air
The area where laminar becomes turbulent is called? Correct answer-Transition region
Separation along an aerodynamic object occurs because Correct answer-Because of adverse
pressure gradient and the shape of the object
Ground effect has a tendency to make an airplane behave like it has a Correct answer-higher
aspect ratio
When a wing is within 1/10 of its span to the surface, its induced drag is reduced Correct answer-
by nearly half
