To get enough thrust to have lot of wind move under the wings to have the wind lift it up...if you went backwards then the balance of the plane would make it impossible to pilot.
An airplane flying through the air, a swimmer diving into a pool etc.
Projectiles are basically just objects that move through air along a trajectory without a propulsion system. A simpler definition is that projectiles are things that move through air along a curved path without anything to push it forward, like a motor. Examples would be like an eraser that you throw at someone.
Examples of fluid friction are fish swimming through water, an airplane flying through the air and a motorboat skidding over water. Although fluid friction refers to friction through water, it can also apply to air.
An airplane stays up in the air due to a combination of factors. The main factor is the shape of the wings, which creates lift as air flows over and under them. The engines also provide thrust to move the plane forward, and the overall design of the plane helps maintain stability and control during flight.
Projectiles are basically just objects that move through air along a trajectory without a propulsion system. A simpler definition is that projectiles are things that move through air along a curved path without anything to push it forward, like a motor. Examples would be like an eraser that you throw at someone.
the jet turbine
The commonly used fuselage shape allows the aeroplane to move forward through the air at a reduced drag. And the sectional shape of the wings create lift.
thrust
Thrust is the forward movement of an airplane that is provided by the engines. The thrust causes air to move over and under the wings and allows the plane to fly.
Well the plane is flying through the air not through space. It is the pressure differential on the airfoils that make the plane move through the air.
An eagle uses its wings to move and fly as most birds do. The wings move up and down in order for air to flow through them and allow the eagle to move forward through the air.
That's true for the airplane's wings, when the airplane is flying upright.
The propeller on a turboprop airplane engine spins to move the aircraft through the air. It acts in a way similar to that of the blade in a fan.
As an airplane moves forward a vacuum forms on top of the wing. That vacuum lifts the airplane off the ground and into the air.
Airplanes are NOT "suspended in mid air" - they move through the air and are supported by 'lift' derived from the differential air pressure above and below their wings.
Forces that act on an airplane? There are several. First, the thrust of the engines which push the airplane forward. If it's a jet-powered airplane, then the force of the air and burned fuel being pushed out of the BACK of the engine drive the plane FORWARD. If it's a propeller-powered plane, then the propellers spin around in the air and generate lift which pulls the plane forward. There's the force of gravity, which pulls the airplane to the ground. There is the force of "lift". As the plane moves through the air, the air standing still flows backwards over the wing and under the wing. The air going over the wing is forced to move faster than the air moving under, which generates lift. The faster the airplane, or the more curved the wing is, the more lift is generated. The lift generated by the air flowing across the wing lifts the airplane against gravity. Finally, drag tends to slow the airplane down. When the airplane slows down, it generates less lift, and it decends. If it slows down too much, the airplane will stop flying and will crash.
A boomerang is a angled or bent stick that when thrown in the air comes back to the thrower when it does not hit an object. A propeller is a straight crafted out stick that when attached to the engine makes the airplane move forward.