Base Aereodyn

Question 1

Fondumental

Answer 1

ENERGY and MASS can neither be created nor

destroyed, just transform

Question 2

Principle of Continuity

Answer 2

The Equation of Continuity

A × V × ρ = Constant on low subsonic >400kts density change insignificant so it is not considering.

Question 3

Bernoulli Thereom

Answer 3

“In the steady flow of an ideal fluid the sum of the pressure energy and the kinetic energy remains constant”.

Pressure + Kinetic energy = Constant
p + 1/2 ρ V^2 = Constant

Question 4

Streamline

Answer 4

A streamline is the path traced by a particle of air in a steady airflow, and streamlines cannot
cross. When streamlines are shown close together it illustrates increased velocity, and vice versa

Question 5

Streamtube

Answer 5

A streamtube is an imaginary tube made of streamlines. There is no flow into or out of the
streamtube through the “walls”, only a flow along the tube