Write an expository essay explaining how the forces in fluids allow heavy airplanes to fly.
• Bernoulli's principle
• wing shape
• lift
• thrust
• drag
Every object on Earth has weight, a product of both gravity and mass. A Boeing 747-8 passenger airliner has a maximum takeoff weight of 487.5 tons (442 metric tons), the force of the weighty plane is drawn toward the Earth. Weight's opposing force is lift, which holds an airplane in the air. This feat is accomplished through the use of a wing, also known as an airfoil. Like drag, lift can exist only in the presence of a moving fluid. It doesn't matter if the object is stationary and the fluid is moving (like with a kite on a windy day), or if the fluid is still and the object is moving through it. What really matters is the difference in speeds between the object and the fluid.
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(Gravity provides the thrust for a glider.) The engines push air back with the same force that the air moves the plane forward; this thrust force-pair is always equal and opposite according to Newton's 3rd Law.
Drag opposes thrust. Imagine sticking your hand out the window of a moving car and flying your hand. The force that pushes your hand back is called "drag". As your hand pushes on the wind, the wind also pushes against your hand. Isaac Newton would say that force of your hand pushing on the air is always equal to the force of the air pushing on your hand; this is his third law.
Lift opposes weight. Newton's Laws and Bernoulli's Principle generate lift. A plane that sits on a runway doesn't have any lift, but it does have weight. Lift is proportional to the square of the velocity of an airplane and as a plane goes faster, its lift increases. As a plane moves forward, its lift force increases until it equals its weight. When lift equals weight, the plane can fly. In level flight, lift equals weight as the plane flies at constant
Instead of just falling to the ground it went up to the ceiling and from there it slowly descended. But eventually it broke and they were inspired to make more which eventually sparked their idea to invent the glider. “It flew across the room till it struck the ceiling, where it fluttered a while, and finally sank to the floor.” (The Wright Brothers 39)
That action is known as force. A force is something that acts on an object while it is either in motion or at rest, and tends to overcome the inertia inherent of either state. (https://www.britannica.com/science/force-physics), Sir Isaac Newton’s first and second laws of motion explain how the force acts on an object and how it affects its
The history of aerodynamics first comes from Leonardo Da Vinci he was a famous mathematician, he studied in aerodynamics and he also created two types of flying objects, one looked like a helicopter but instead it was powered by a turning wheel and the wings was just a spiral on top of the platform, and the other looked like a bird suit with wings that can flap up and down. (Phillips,Warren F, 2004) Th...
Many people are amazed with the flight of an object, especially one the size of an airplane, but they do not realize how much physics plays a role in this amazing incident. There are many different ways in which physics aids the flight of an aircraft. In the following few paragraphs some of the many ways will be described so that you, the reader, will realize physics at work in the world of flight.
Up, Up and Away! So your paper airplane takes to the air and glides gentely to the ground but you still don't understand how it is able to glide. Your paper airplane uses lift to carry it through the air and to its landing area. Now you are interested and want to know how lift works. The lift for your paper airplane doesn't work quite the same as a real airplane but understanding how an airplane maintains lift is useful. Now something important to remember is that lift can only happen when in the pressense of a moving fluid and that air has fluid properties.
For a plane to create lift, its wings must create low pressure on top and high pressure on the bottom. However, at the tips of the wings, the high pressure pushes and the low pressure pulls air onto the top of the wing, reducing lift and creating a current flowing to the top. This current remains even after the wing has left the area, producing really awesome vortices.
In the various themes of flight, one way can be referred to as actual physical flight, to fly in the air with wings. In “A Wall of Fire Rising” Guy took physical flight in the hot air balloon, soaring high above the rest of the village in hopes to fly away. Another way flight can be described as more figurative,
driven by a jet engine or a propeller. The airplanes were first used to gather
All flight is the result of forces acting upon the wings of an airplane that allow it to counteract gravity. Contrary to popular belief, the Bernoulli principle is not responsible for most of the lift generated by an airplanes wings. Rather, the lift is created by air being deflected off the wings and transferring an upward force to those wings.
plane and a boat's sail lifts and pushes it forward. Imagine the sail of a boat
This paper will explain a few of the key concepts behind the physics of skydiving. First we will explore why a skydiver accelerates after he leaps out of the plane before his jump, second we will try and explain the drag forces effecting the skydiver, and lastly we will attempt to explain how terminal velocity works.
Flight uses four forces: lift, weight, thrust, and drag. In a nutshell; so to speak, an airplane must create enough lift to support its own weight. Secondly, the airplane must produce thrust to propel itself. Finally, the aircraft must overcome the drag or the force of resistance on the airplane that is moving through the air. All four of these forces are vital and necessary for an aircraft to move, takeoff, fly, and land.
Lift is generated by the air flow around the plane's wing. This effect is explained mostly by Bernoulli's Principle which states that the pressure of the air decreases as the velocity of the air increases. The design of a plane's wing changes the airflow around the wing's surface. The air has farther to travel over the top of the wing than the air traveling below the wing. Therefore, the air traveling above the wing is traveling at a higher velocity than the air traveling below it. As air flows around the wing, a high pressure region with low air velocity is created below the wing, and a low pressure region with high air velocity is created above the wing. The difference between the two pressures generates the lift force. (JEPPESEN 1-11)
Ever since I was little I was amazed at the ability for a machine to fly. I have always wanted to explore ideas of flight and be able to actually fly. I think I may have found my childhood fantasy in the world of aeronautical engineering. The object of my paper is to give me more insight on my future career as an aeronautical engineer. This paper was also to give me ideas of the physics of flight and be to apply those physics of flight to compete in a high school competition.
The invention of the airplane, ever since it was invented in 1903 has impacted the world in many ways. It has increased the job rate, boosted the economy, created cultural diversion, and created less pollution than most means of travel. Orville Wright once said, “The airplane stays up because it doesn't have time to fall.” The airplane never did fall and excelled in everything it did, not falling once. The airplane, one of the most important inventions created in the 20th century, impacted travel ways across the world.