# What is the physics behind flight?

Airplane wings are shaped to make air move faster over the top of the wing. When air moves faster, the pressure of the air decreases. So the pressure on the top of the wing is less than the pressure on the bottom of the wing. The difference in pressure creates a force on the wing that lifts the wing up into the air.

## What are the 4 mechanics of flight?

The four forces acting on an aircraft in straight-and-level, unaccelerated flight are thrust, drag, lift, and weight. They are defined as follows: Thrust—the forward force produced by the powerplant/ propeller or rotor.

## What forces must you understand in order to safely fly an aircraft?

These same four forces help an airplane fly. The four forces are lift, thrust, drag, and weight. As a Frisbee flies through the air, lift holds it up.

## When the plane is flying at a constant height which two forces must be balanced?

Cruising at a constant height The height does not change, so the forces acting up and down must be balanced. The two forces acting up and down on a plane are weight and lift, shown opposite.

## What are the 5 forces of flight?

1. Airline industry Porter’s five forces model shows different forces that act on the players in the airline industry. These forces are competition in the industry, the threat of new entrants, suppliers’ bargaining power, buyers’ bargaining power, and the threat of substitutes.

## What are the 5 forces that affect flight?

An airplane in flight is acted on by four forces: lift, the upward acting force; gravity, the downward acting force; thrust, the forward acting force; and drag, the backward acting force (also called wind resistance).

## What are the 7 stages of flight?

The general flight phases are divided into: planning phase, takeoff phase, climb phase, cruise phase, descent phase, approach phase, and taxi phase.

## What are the 3 flight types?

• Buoyant flight.
• Aerodynamic flight.
• Ballistic.

## What are the 3 primary flight controls?

The ailerons, elevator (or stabilator), and rudder constitute the primary control system and are required to control an aircraft safely during flight.

## What is the most important force of flight?

Perhaps the most importance force to a pilot is lift. Lift directly opposes the weight of the aircraft to keep it aloft. As the aircraft moves faster, lift increases until its force is equal to weight. When equilibrium between weight and lift is established, the aircraft is pushed upward.

## What force causes planes to turn?

Centrifugal force is the “equal and opposite reaction” of the airplane to the change in direction and acts equal and opposite to the horizontal component of lift. This explains why, in a correctly executed turn, the force that turns the airplane is not supplied by the rudder.

## How does gravity affect flight?

Gravity is the force that pulls objects toward the Earth. Lift is the force that pushes an aircraft into the air. When paper airplanes are thrown up, gravity pulls them down. This movement causes a difference of air pressure on the airplane wings, which then causes lift.

## What are the 4 forces?

Forces and carrier particles There are four fundamental forces at work in the universe: the strong force, the weak force, the electromagnetic force, and the gravitational force. They work over different ranges and have different strengths. Gravity is the weakest but it has an infinite range.

## How does thrust affect flight?

Thrust is the force which moves an aircraft through the air. Thrust is used to overcome the drag of an airplane, and to overcome the weight of a rocket. Thrust is generated by the engines of the aircraft through some kind of propulsion system.

## What are the 2 natural forces acting on an airplane?

Lift and drag are considered aerodynamic forces because they exist due to the movement of an object (such as a plane) through the air. The weight pulls down on the plane opposing the lift created by air flowing over the wing. Thrust is generated by the propeller (engine) and opposes drag caused by air resistance.

## What are the 6 fundamentals of flight?

Lift depends upon (1) shape of the airfoil (2) the angle of attack (3) the area of the surface exposed to the airstream (4) the square of the air speed (5) the air density. Weight: The weight acts vertically downward from the center of gravity (CG) of the airplane.

## What are the six motions of flight?

An airplane rotates in bank, pitch, and yaw while also moving horizontally, vertically, and laterally. The four fundamentals (straight-and-level flight, turns, climbs, and descents) are the principal maneuvers that control the airplane through the six motions of flight.

## What is thrust in flight?

Thrust is the force needed to overcome the resistance of air (drag) to the passage of an aircraft.

## Why can humans not fly?

Humans are not physically designed to fly. We cannot create enough lift to overcome the force of gravity (or our weight). It’s not only wings that allow birds to fly. Their light frame and hollow bones make it easier to counteract gravity.

## What creates lift?

In heavier-than-air craft, lift is created by the flow of air over an airfoil. The shape of an airfoil causes air to flow faster on top than on bottom. The fast flowing air decreases the surrounding air pressure. Because the air pressure is greater below the airfoil than above, a resulting lift force is created.

## Can you have lift without gravity?

Yes. Lift is a component of the aerodynamic force (the other component being drag) and is not dependent on gravity.

## What is the 3/6 Rule aviation?

For larger aircraft, typically people use some form of the 3/6 Rule: 3 times the altitude (in thousands of feet) you have to lose is the distance back to start the descent; 6 times your groundspeed is your descent rate.

## How many flight types are there?

There are three (3) basic types of flights. The combined point of origin and departure are known as a city pair. Travels between the origin and destination without any interruption. Requires the passenger to change airplanes at another airport before reaching their destination.

## What are the 10 phases of flight?

• Pre-departure. This is the preparation time for flight.
• Clearance to Taxi.
• Take-off.
• Initial climb.
• Climb to cruise altitude.
• Cruise altitude.
• Descent.
• Approach.

## What is a 1 stop flight?

A direct flight makes at least one intermediate stop along the way to its final destination, but has only one flight number. For example, if you choose a direct flight between New York and Houston you’d fly on one plane the whole way to Houston.