3. Aeronautical - Pascal's Principle

Question 1

What is the Pascal’s principle formula and why is it useful?

Answer 1

F2=F1 A2/A1

It’s used in sealed hydraulic systems - constant pressure

Question 2

What is hydraulic pressure?

Answer 2

Is a result of static fluid. A still fluid produces this due to the mass of the fluid acting on the container (liquid) or the random move mn of molecules (gas)

Question 3

What is the pressure formula?

Answer 3

Pressure=Force per unit area

P=F/A

Question 4

What is the formula for hydrostatic pressure at a specific depth?

Answer 4

P=P0+pgh

P0-pressure at top (Pa)
p-density of the fluid (kgm-3)
g-acceleration due to gravity (ms-2)
h-depth below the top (m)

Question 5

What is dynamic pressure?

Answer 5

Occurs from a moving fluid, creates pressure because of velocity.

Question 6

What is the formula for dynamic pressure?

Answer 6

PD=1/2 X pv(squared)

p-density
v-velocity

Question 7

What does Pascal’s principle state?

Answer 7

The pressure applied to an enclosed liquid is transmitted undiminished to every point in the fluid and to the walls of the container.