10th Unit 4 Section A Lesson 2

Open Ended

Why does a balloon you have blown up fly away when you let the air out?

Open Ended

Why do parachutes slow down when they are falling?

Open Ended

How does a plane fly?

Draw

Draw and label the 4 forces. Be sure to show them as balanced. The relative length of your arrows indicate the strength of the forces.

Draw

You increase the throttle.

1. Draw arrows to illustrate the magnitude of each of the four forces of flight.

2. Explain which force is affected

3. Which force is being overcome

4. How will the airplane react as a result of the action (e.g., climb, slow down, etc.).

Draw

You push forward on the yoke and the elevator goes down.

1. Draw arrows to illustrate the magnitude of each of the four forces of flight.

2. Explain which force is affected

3. Which force is being overcome

4. How will the airplane react as a result of the action (e.g., climb, slow down, etc.).

Draw

You decrease the throttle.

1. Draw arrows to illustrate the magnitude of each of the four forces of flight.

2. Explain which force is affected

3. Which force is being overcome

4. How will the airplane react as a result of the action (e.g., climb, slow down, etc.).

Draw

You pull back on the yoke and the elevator goes up.

1. Draw arrows to illustrate the magnitude of each of the four forces of flight.

2. Explain which force is affected

3. Which force is being overcome

4. How will the airplane react as a result of the action (e.g., climb, slow down, etc.).

​This will be a group lab. Your paper airplane instructions are provided in your notebook.

Multiple Choice

The four forces acting on an airplane in flight are

• lift, weight, thrust, and drag.

• lift, weight, gravity, and thrust.

• lift, gravity, power, and friction.

Multiple Choice

When are the four forces that act on an airplane in equilibrium?

• During unaccelerated level flight.

• When the aircraft is accelerating.

• When the aircraft is at rest on the ground.

Multiple Choice

What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?

• Lift equals weight and thrust equals drag.

• Lift, drag, and weight equal thrust.

• Lift and weight equal thrust and drag.

Multiple Choice

Which statement relates to Bernoulli's principle?

• For every action, there is an equal and opposite reaction.

• An additional upward force is generated as the lower surface of the airfoil deflects air downward.

• Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface.

Multiple Choice

What is one purpose of wing flaps?

• To enable the pilot to make steeper approaches to a landing without increasing the airspeed.

• To relieve the pilot of maintaining continuous pressure on the controls.

• To decrease wing area to vary the lift.

Multiple Choice

One of the main functions of flaps during approach and landing is to

• decrease the angle of descent without increasing the airspeed.

• permit a touchdown at a higher indicated airspeed.

• increase the angle of descent without increasing the airspeed.

Multiple Choice

What is the purpose of the rudder on an airplane?

• To control yaw.

• To control overbanking tendency.

• To control roll.

Multiple Choice

Which is not a primary flight control surface?

• Flaps.

• Elevator.

• Ailerons.

Multiple Choice

The elevator controls movement around which axis?

• Longitudinal.

• Lateral.

• Vertical.

Multiple Choice

Which statement is true concerning primary flight controls?

• The effectiveness of each control surface increases with speed because there is more airflow over them.

• Only when all three primary flight controls move in sequence do the airflow and pressure distribution change over and around the airfoil.

• Primary flight controls include ailerons, rudder, elevator, and trim systems.