Bernoullis

Question 1

In basic aerodynamics, is air considered a perfect fluid?

Answer 1

Yes

Question 2

Above roughly what speed does the density change become significant

Answer 2

300ktas or 0.4M

Question 3

What concept does that equation of continuity refer to

Answer 3

That the mass of a fluid cannot be created nor destroyed

Question 4

WRT pressure and velocity, describe Bernoullis principle through a venturi

Answer 4

As the speed of a fluid increases over a curved surface, the static pressure of the fluid decreases

Question 5

Is the camber of a wing often referred to as a half venturi

Answer 5

Yes

Question 6

At what point of the venturi is air pressure at its lowest

Answer 6

Thinnest point

Question 7

Does the air pressure increase or decrease past the point of max camber/ thinnest ventuir

Answer 7

Increase

Question 8

What is the area past the max camber point often called and why

Answer 8

Adverse pressure gradient.

Because air is flowing contrary to nature L to H

Question 9

How does the pressure differential change WRT velocity.

Answer 9

Varies as the square of the speed

Eg.
If velocity is doubled, pressure differential is 4x as large

Question 10

As an aircraft moves through air, does it create static or dynamic pressure?

Answer 10

Dynamic

Question 11

Does static pressure apply to a moving aircraft

Answer 11

Yes, it always acts upon everything

Question 12

What kind of pressure does the pitot tube detect?

Answer 12

Both static and dynamic

Question 13

Where are static ports located on pc21
A. Near the wings
B. Engine bay
C. Aft of wings on fuselage

Answer 13

C

Question 14

How is dynamic pressure determined

Answer 14

By subtracting static pressure from total pressure (pitot)