Why do airplanes fly?

Basic concepts

Forces	Gravity	Weight
Engineering	Air pressure	Fluid dynamics

The following is an introduction:

Why do planes fly? Well, one of the main reasons is the aerodynamics and lift forces they produce. Through different models of paper airplanes you can enter the world of aeronautics and the physical principles that govern it.

Scientific basis

The experiment aims to make an aircraft that flies as far as possible, and we achieved this by finding the optimal balance between lift and aerodynamic resistance. Through three model airplanes you will see how different geometries and mass distributions achieve from the same sheet of paper a plane that does not fly much, an extraordinary glider and the world record in distance. The differences are in front of you, shape or aerodynamic profile, weight distribution and speed are the variables. Enjoy them.

Materials

• Sheets of used paper.

Conducting the experiment - steps to follow

1. We put on our safety glasses
2. We made the simple model airplane using used paper
3. We make the model glider
4. We manufacture the world's long-range airplane model
5. We fly planes, pushing with different force, and we look not only at the distance but at the position of the plane against the 'wind'

The procedure

It's as simple as throwing the plane. Try different throwing force, height. Try to get as far as you can... and remember, minimum three reps per launch condition, scientific method!

Observation and results

Carefully follow the steps described in the experiment.

Doing science experiments at home is a fun way to learn the practical part of science, but it may require taking extra precautions and/or cluttering or dirtying the work area.

Pick it up!

Make sure you leave everything clean and tidy once you're done doing the experiment. And don't forget to recycle the planes.

Adult supervision and safety first

• Follow the experiment instructions carefully.
• It is advisable for an adult to supervise the performance of the test, assisting in the use of potentially dangerous materials or utensils if not used correctly.
• An adult should also determine whether the experiment is appropriate for the age of the student participating in the activity.
• Doing science experiments at home is a fun way to learn the practical part of science, but it may require taking extra precautions and/or cluttering or dirtying the work area.