Bernoulli’s Flashcards
Total pressure equation
Static+dynamic
What is the stagnation region
Area of high static pressure in front of any object with airflow
Total air reaction formula
Lift+drag
What is lift
Flight force that is part of TAR and acts perpendicular to relative airflow
What is drag
Flight force that is part of TAR and acts in the same direction as the relative air flow
What is the center of pressure and how does it vary when AofA increases
Point where all the lift is said to act through. Moves forward when AofA is increased
Separation point, what happens when AofA increases.
Point that airflow leaves the upper surface of a wing. As AofA increases, separation point increases.
Stall point
When the separation point reaches the leading edge
What is a stall
A large decrease in lift and a large increase in drag at the same time.
What is the boundary layer
Layer of air closest to an object’s surface that slows down from free stream velocity to zero at the objects surface.
Laminar BL
Smooth layers of air
Turbulent BL
Erratic air flow
5 properties of laminar airflow
Smooth flow, gradual velocity profile, thinner, less KE, less skin friction
5 properties of turbulent airflow
Erratic particle flow, steeper velocity profile, 10x thicker, more KE, delays separation
