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5.0
AVIT 323 Final Exam Questions with Detailed
Verified Answers (100% Correct Answers) /Already
Graded A+
Quiz: What is the boundary layer?
Ans: Layer of airflow over the surface that shows local retardation due to
viscosity.
Quiz: What is viscosity?
Ans: Resistance to shear
Quiz: True or False: Turbulent air transfers heat better
Ans: True
Quiz: True or False: Turbulent air holds a lot of kinetic energy
Ans: False
Quiz: What are the sections of the boundary layer?
Ans: Laminar, transition, turbulent
Quiz: What happens during the adverse pressure gradient?
Ans: Flows slows down to a point of reversing, once it reverses, the boundary
layer separates from the surface. Creating a separation bubble.
Quiz: What are the two types of turbulent flow?
Sunday, 02 March 2025
,Ans: Burbling
Vortex Tubes
Quiz: What causes pressure drag?
Ans: Separation
Quiz: What kind of drag dominates on non-streamlined aircraft?
Ans: Pressure drag
Quiz: What kind of drag dominates on streamlined aircraft?
Ans: Skin-friction drag
Quiz: What are the types of parasite drag?
Ans: Form/pressure
Skin friction
Profile
Interference
Cooling
Leakage
Quiz: What causes parasite drag?
Ans: Any loss in momentum due to:
Powerplant cooling
Air conditioning
Leakage through access gaps
Poor construction
Examstudy - Stuvia US
, Quiz: What is skin friction drag?
Ans: Viscous drag over the boundary layer
Quiz: What is the perfect fineness ratio?
Ans: 4:1
Quiz: What is form/pressure drag?
Ans: Caused by pressure differences of the forward and aft surfaces.
Laminar flow separates easily
Turbulent flow stays attached better
Streamlining helps boundary layer stay attached better
Quiz: What is profile drag?
Ans: It combines skin friction and form drag due to surface irregularities.
Quiz: What is cooling drag?
Ans: Form drag?
Quiz: What is leakage drag?
Ans: Leaked air from pressurized airplanes
Examstudy - Stuvia US
In today's fast-paced educational landscape, students need reliable resources to excel in their studies.
5.0
AVIT 323 Final Exam Questions with Detailed
Verified Answers (100% Correct Answers) /Already
Graded A+
Quiz: What is the boundary layer?
Ans: Layer of airflow over the surface that shows local retardation due to
viscosity.
Quiz: What is viscosity?
Ans: Resistance to shear
Quiz: True or False: Turbulent air transfers heat better
Ans: True
Quiz: True or False: Turbulent air holds a lot of kinetic energy
Ans: False
Quiz: What are the sections of the boundary layer?
Ans: Laminar, transition, turbulent
Quiz: What happens during the adverse pressure gradient?
Ans: Flows slows down to a point of reversing, once it reverses, the boundary
layer separates from the surface. Creating a separation bubble.
Quiz: What are the two types of turbulent flow?
Sunday, 02 March 2025
,Ans: Burbling
Vortex Tubes
Quiz: What causes pressure drag?
Ans: Separation
Quiz: What kind of drag dominates on non-streamlined aircraft?
Ans: Pressure drag
Quiz: What kind of drag dominates on streamlined aircraft?
Ans: Skin-friction drag
Quiz: What are the types of parasite drag?
Ans: Form/pressure
Skin friction
Profile
Interference
Cooling
Leakage
Quiz: What causes parasite drag?
Ans: Any loss in momentum due to:
Powerplant cooling
Air conditioning
Leakage through access gaps
Poor construction
Examstudy - Stuvia US
, Quiz: What is skin friction drag?
Ans: Viscous drag over the boundary layer
Quiz: What is the perfect fineness ratio?
Ans: 4:1
Quiz: What is form/pressure drag?
Ans: Caused by pressure differences of the forward and aft surfaces.
Laminar flow separates easily
Turbulent flow stays attached better
Streamlining helps boundary layer stay attached better
Quiz: What is profile drag?
Ans: It combines skin friction and form drag due to surface irregularities.
Quiz: What is cooling drag?
Ans: Form drag?
Quiz: What is leakage drag?
Ans: Leaked air from pressurized airplanes
Examstudy - Stuvia US
