Aerodynamics and Bernoulli's Principle

Front

What is Bernoulli's Principle?

Back

Bernoulli's Principle explains the production of lift force by an aerofoil. It states that an increase in the velocity of a fluid is accompanied by a decrease in pressure.

Front

What are the components of total pressure in a fluid according to Bernoulli's Principle?

Back

Total pressure consists of static pressure (the weight of the molecules) and dynamic pressure (due to motion).

Front

What happens to static pressure in a venturi tube?

Back

In a venturi tube, at the narrowest point where the speed of the flow is fastest, the static pressure is least.

Front

What is the relationship between velocity and pressure in a moving fluid?

Back

An increase in the velocity of a fluid is always accompanied by a decrease in pressure.

Front

What are the implications of reduced temperature in fluid flow?

Back

Reduced temperature can lead to icing of external and internal components, such as wings and carburettors, requiring de-icing systems.

Front

How does airflow behave in relation to Bernoulli's Principle?

Back

Airflow behaves like any other liquid in its flow and pressure characteristics, allowing Bernoulli's Principle to be applied to air over a curved surface.

Front

What are the three methods to increase lift force over an aircraft's wings?

Back

1. Increasing the wing's angle of attack. 2. Increasing the camber of the wing. 3. Increasing the speed of the relative airflow over the wing.

Front

What is streamline flow or laminar flow?

Back

Streamline flow, or laminar flow, occurs when molecules follow the same path, offering the least air disturbance and drag.

Front

What is turbulent flow?

Back

Turbulent flow, or unsteady flow, occurs when molecules no longer follow a streamline pattern, causing eddying and increased drag.

Front

What is the transition point in airflow over a wing?

Back

The transition point is where the boundary layer of air next to the wing becomes turbulent during normal flight.