Aviation

Question 1

As the angle of attack increases, what happen with the stagnation point and lowest static pressure?

Answer 1

DOFO.

Stagnation point moves down and low static pressure moves forwards.

Question 2

As the angle of attack decreases, what happen with the stagnation point and lowest static pressure?

Answer 2

UPAF.

Stagnation point moves up and low static pressure moves aft.

Question 3

Venturi subsonic incompressible airflow:
Standard Pressure of an undisturbed airflow - Throat
V of an undisturbed airflow - Throat
P. dyn. Throat - undisturbed airflow.
P. total Throat - undisturbed airflow.

Answer 3

[SUMATORIO=]
Standard Pressure of an undisturbed airflow > Throat
V of an undisturbed airflow < Throat
P. dyn. Throat > undisturbed airflow.
P. total Throat = undisturbed airflow.

Question 4

Constant load factor:
(V) - Induced drag
mass - Induced drag

Answer 4

(V) increases, Induced drag increases (FALSE)

mass increases, Induced drag decreases (FALSE)
mass decreases, Induced drag increases (FALSE)

Question 5

What happen with the induced drag when the AoA decreases?

Answer 5

So does Induced drag.

Question 6

What is the AoA?

Answer 6

It’s the angle between the UNDISTURBED AIRFLOW and the CHORD LINE.

Question 7

What happen with the CP when the AoA decreases?

Answer 7

CP moves backward.

Question 8

What happen with the CP when the AoA increases in a positive cambered aerofoil?

Answer 8

CP moves forward.