review 3 Flashcards
1
Q
Blade angle is the angular difference between the _____ of the blade and ______
A
chord line and plane of rotation
2
Q
Feathering a blade means changing it’s ____ angle around the ____ axis
A
pitch angle/ feathering axis
3
Q
When an airflow is deflected by an airfoil, the force acting more or less at a right angle to the airfoil is called _____
A
total reaction
4
Q
When an airflow speeds us, the pressure of the flow ____
A
decreases
5
Q
Coefficient of lift of an airfoil is determined by its ____and ____
A
shape and angle of attack
6
Q
Center of pressure of a symmetrical airfoil ______with changes of angle of attack
A
remains steady
