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WorksheetsM8.2 Airflow Fundamentals
Total questions: 12
Worksheet time: 12mins
What disrupts laminar flow over a wing?
Smooth surfaces
Surface distortions
High pressure
Low velocity
What is Free Stream Flow?
The flow of air directly affected by the aircraft
Fluid far enough away from a moving body unaffected by it
The direction of airflow with respect to the object
A region where the velocity of the relative airflow is zero
What type of boundary layer is more energetic and resists negative pressure gradients better?
Laminar
Turbulent
Transitional
Stationary
What is the role of stall warning devices in heavier aircraft?
To increase speed
To reduce drag
To alert pilots of potential stalls
To enhance lift
What happens when a wing stalls due to high pressure drag?
It increases speed
It increases lift
It slows the aircraft and the stall increases
It enhances fuel efficiency
What is the term for the airflow returning to its original state after passing over the aerofoil?
Upwash
Downwash
Stagnation
Vortex
What must be considered on a finite wingspan in addition to the bound vortex when considering the air flow around an aerofoil?
Wing-tip vortices
Leading edge vortices
Trailing edge vortices
Stagnation vortices
What is the span-wise element created by the pressure differential?
Towards the root on the top surface of the wing
Away from the root on the top surface of the wing
Towards the tip on the upper surface of the wing
Away from the tip on the lower surface of the wing
What is the primary function of winglets on an aircraft?
To reduce wingtip vortices
To decrease aircraft weight
To increase fuel consumption
To enhance passenger comfort
How does a turbulent boundary layer affect the drag on an aircraft?
It increases drag
It has no effect on drag
It decreases drag
It stabilizes drag
What is the effect of increasing the angle of attack on a wing?
It has no effect on lift
It reduces fuel efficiency
It increases lift until a critical angle
It decreases lift
What is the primary cause of induced drag on an aircraft?
High speed
Engine thrust
Wingtip vortices
Low altitude
