Where Laminar smooth flowing turns into Turbulent flow, is where the Reynolds Number reaches critical value

Air is the fluid through which airplanes move

Contributes to Aerodynamic Drag

is comprised of all the forces that work to slow an aircraft’s movement.

this type of stall are practiced to simulate normal approach-to-landing conditions and configurations

Assumed to involve no friction, thermal conduction, or diffusion

The relationship between the drag coefficient and the lift coefficient.

Are smooth and regular and the fluid elements smoothly along the streamlines

More severe than un-accelerated stalls and are often unexpected

A condition in aerodynamics and aviation wherein the AOA increases beyond a certain point such that lift begins to decrease

Breaks up and a fluid elements move in a random, irregular torturous fashion

Causes shear stress at the surface

simulates a base to final skidding turn, where pilots may apply aileron in one direction rudder in the direction.

As the air and vortices roll off the back of your wing, they angle down

occurs when you pull the aircraft nose up too high while maintaining full power.

is the portion of parasite drag generated by the aircraft due to its shape and airflow around it.

this type of stall are practiced to simulate take-off and climb-out conditions and configurations

Measure of ratio if inertial forces to viscous forces

 is the aerodynamic resistance due to the contact of moving air with the surface of an aircraft.

comes from the intersection of airstreams that creates eddy currents, turbulence, or restricts smooth airflow.

Pressure drag due to separation

The second basic type of drag

Sticky or adhesive characteristic of a fluid.

occurs when an aircraft is in a landing configuration, usually with the landing gear down and reduced power.

The region of viscous flow which has been retarded owing to friction at the surface