Bernoulli
This principle explains how an increase in airspeed results in a decrease in pressure.
What is Bernoulli’s Principle?
Newton’s Third Law states that for every action there is an equal and _____ reaction.
What is opposite?
These brothers achieved the first successful powered, sustained, controlled flight in 1903.
Who are the Wright brothers?
Camber refers to the _____ of an airfoil.
What is curvature?
True or false: Bernoulli’s Principle alone fully explains lift on an airplane wing.
What is false?
When a wing pushes air downward, the reaction force on the wing is directed _____.
What is upward?
The Wright brothers made their historic first flight near this location in North Carolina.
What is Kitty Hawk?
Increasing camber generally increases lift at a given airspeed by doing what to airflow?
What is increasing airflow deflection and pressure difference?
According to Bernoulli, air moving faster over a wing results in ______ pressure.
What is lower pressure?
Newton’s Third Law explains lift because wings _____ air downward.
What is push (or deflect)?
Unlike earlier aviators, the Wright brothers focused heavily on controlling the airplane in all _____ axes.
What are three axes (roll, pitch, yaw)?
Compared to a symmetrical airfoil, a cambered airfoil produces more lift at _____ angle of attack.
What is zero (or lower)?
This airflow characteristic must exist for Bernoulli’s Principle to meaningfully contribute to lift over a wing.
What is a difference in airspeed between the upper and lower surfaces?
Which is the correct action–reaction pair involved in lift generation?
What is “the wing pushes air downward, and the air pushes the wing upward”?
This control method, developed by the Wright brothers, allowed them to roll the airplane.
What is wing warping?
Flaps increase lift primarily by increasing wing camber and _____.
What is surface area?
Bernoulli’s Principle applies only when the airflow is assumed to be _____ and _____.
What is steady and incompressible?
(acceptable: smooth or continuous flow)
Why does lift still exist if airflow over the top and bottom of a wing travels the same distance?
What is “because lift can be created by downward momentum change of air per Newton’s Third Law”?
What key mistake did many early aviators make that the Wright brothers avoided?
What is focusing on power before control?
What tradeoff comes with increasing camber too much?
What is increased drag (and potential flow separation)?