There are four forces that are needed on a plane to enable flight. Let’s break down these four forces for a better understanding:
Weight – Pulls the plane down with gravity
Lift – Brings the plane up by using the downward momentum and meeting the resistance of air
Thrust – Pulls the plane forward [Engines]
Drag – Creates air resistance pulling the plane back
To understand the basic physics of flight, think of air as a fluid like water. If you move your hand, palm flat, through a tub of water or hold your hand outside of a moving vehicle, you will experience a force of resistance. The resistance you feel is the motion of the fluid or air resisting the object or your hand. In order for a plane to take flight there has to be a careful relationship of the four opposing forces of weight, lift, thrust, and drag. You might think engines are all that is needed to make a plane fly but the four forces are needed and have to work together allowing planes to fly through the air.
A plane’s engines are designed to move the plane forward at high speeds that make air flow rapidly over the wings. The air flow is thrown down toward the ground, generating an upward force called lift. This lift overcomes the planes weight and holds it in the sky. A simpler explanation would be that an engine move the aircraft forward, and the wings move it upward. Wings make the lift and are the key to making planes fly.
Wings of a plane have a curved upper surface with a flat bottom surface, creating a cross-sectional shape called an airfoil. When air moves over the curved upper wing surface, it has to travel further and go faster than the air that passes underneath. Basic theory of physics states that fast-moving air is at a lower pressure than slower moving air. This means that the pressure above the wing is lower than the pressure below, creating the lift that holds the plane up. This is an excellent explanation of how wings work, but it is not the only factor involved in making the plane fly.
Creating the lift has many factors to consider, wings are not completely flat. They are tilted slightly back so that they hit the air at an angle. The angle directs the airflow downward, pushing the wings upward to produce the lift. Have you ever wondered what the flaps are on the wings of a plane? Flaps are there to increase lift during take-off as well as create drag when landing. During take-off, the plane is moving at a slower speed, so the flaps will extend to push more air down to produce the lift the plane needs to take off of the ground.
There are still many more other factors that allow a plane to fly, but hopefully you get the basics and understand that the wings are the key but not only element needed to fly a plane. Remember the four forces as these are the basics of plane flight.
Thanks to Lyndon for this post, Lyndon writes for Custom Fittings. Custom Fittings supply Stainless Steel Hydraulic Fittings and Aerospace testing adaptors.
VN:F [1.9.22_1171]
Rating: 0.0/10 (0 votes cast)
VN:F [1.9.22_1171]