Motion
An object in Motion must _____ __ ______
Stay in motion
What is needed for an aircraft in steady flight?
Lift must equal weight
Thrust must equal drag
This will create a stable and steady flight
How is lift generated on a wing?
Lift is generated by high-speed air flowing over the wing. The wing creates a high-pressure area underneath from lower speed air, pushing the wing up.
Which of Newton's 3 laws explains the physics of a wing generating lift?
the 3rd law
Why would you need to determine your center of gravity?
So you know how to correctly place objects and people in the aircraft to avoid imbalances.
For every action, there is an equal and opposite reaction. What law is this?
Newton's third Law
Yes, depending on the type of plane there are some structures of smaller aircraft that help produce lift like the cabin.
Why might reducing drag be beneficial?
Reduced drag allows for faster acceleration, increased range, and better fuel efficiency.
What is skipping stone theory?
Lift is produced by air hitting the bottom of the wing.
How do you calculate the center of gravity?
CG = total moment/total weight
What law states that the acceleration of an object is dependent on net force and mass?
the second law
Why is it important to have a plane's cargo not resting on a one side of the plane?
To guarantee that the plane does not stall mid-flight.
What happens when you increase the angle of attack on an aircraft?
The wing/airfoil will generate more lift until a critical angle is reached.
How do you pronounce Ariel's name?
Air - ree - ale
What is the weight shift equation?
Weight shifted/total weight = change in CG/distance weight is shifted
What is the first law of motion?
An object at rest stays at rest
An object in motion will tend to stay in motion.
What happens when an aircraft reaches a critical angle of attack?
The air flowing over the wing separates from the surface and creates turbulent airflow on the wing.
What ways can a pilot control lift?
By adjusting the angle of attack, increasing/decreasing airspeed.
What theory states that the molecules from the front of the wing must reach the end of the wing at the same time?
The Equal Transit time theory
What happens when you are taking too much weight when taking off?
You will stall out of the air and crash towards the ground.
Why are forces vectors?
Forces such as lift have a direction and magnitude, therefore they are a vector.
The aircraft would tend to pitch nose-down and will be extremely hard to take off with.
What is parasite drag and what affects it?
Drag created by the shape of the aircraft and its imperfections. The surface of the aircraft, the rivets that make bumps, and the fuselage itself can all contribute to parasite drag.
What can Daniel Bernoulli's principle be summarized as?
He explained how the pressure of a moving fluid varies with speed.
What determines the coefficient of lift of a wing?
The wing shape+surface area