02-05-2008, 03:44 PM
Everyone had saw an aero plane. But flying aero plane add much more to your amaze. The first flight of the Wright brothers starts a new age of transportation. Basic principle behind the flight is creating pressure difference between upper and lower side of the wing. it is done by applying the Bernoulli's equation.
Bernoulli's equation P + ρgh + ½ρv² = constant
where ρ = density of air
v = velocity of air
p = pressure of air
h = height in air
g = acceleration due to gravity
It is done by the special shape of the wing, if you ever noticed the upper side of the wing is slightly curved than the lower one. This curved shape of the wing is responsible for its flight.. Basic principle behind the flight is creating pressure difference between upper and lower side of the wing. it is done by applying the Bernoulli's equation. It is done by the special shape of the wing, if you ever noticed the upper side of the wing is slightly curved than the lower one. This curved shape of the wing is responsible for its flight.
When a plane is speeding the run way it is increasing the velocity of the air around the wings. Due to curved shape the velocity of the air is more than the lower side. By Bernoulli's equation fast moving air has low pressure than the slower one. Hence there is high pressure on the lower side of the plane as we know that air moves from high pressure to low pressure hence it exerts force in upward direction which lift up the plane.
This uplift of the plane balance the gravitational force hence it maintains it self in air. But it never need the same uplift through out the flight therefore another arrangements are made in the wings the are equipped with the Flaps these are the movable part attached at the back side of the wings. By moving it up and down pilot can control the uplift. these are also used to slow down the planes speed. When flaps are fully lowered they decrease the velocity of the air at the lower side of the wing also increase the surface area in contact of the air due to which overall speed of the plane also decreases, that is why planes land with there flaps fully down.
There are three dimensions within which the aircraft moves, and there is a simple control to change the direction of movement in each of those three dimensions:· Ailerons control Roll
· Rudder controls Yaw
· Elevators control Pitch
· Flaps increase drag and lift
Roll
The ailerons, located on the outer part of the trailing edge of the wings, control the roll or bank of the airplane. The two ailerons (one on each wing) work in opposite directions to each other. When the left one is raised, the right one is lowered.
Pitch
The pitch is the up or down angle of the aircraft, controlled by the elevator. It is located on the trailing edge of the horizontal tail assembly when the elevator moves up, causing the nose of the aircraft to point up. When elevator moves down, pitching the nose down.
Yaw
On the trailing edge of the vertical stabilizer on the tail is the rudder. This controls the yaw, or the left and right turning movement of the aircraft. On a real aircraft the foot pedals control this.
Flaps
The flaps are located on the inside of the trailing edge of the wings, inboard of the ailerons. When this set of control surfaces is lowered the cross-sectional shape (airfoil) of the wing changes. Lowering the flaps creates a greater surface area, increasing lift and drag. Flaps are most commonly used for landing.
Bernoulli's equation P + ρgh + ½ρv² = constant
where ρ = density of air
v = velocity of air
p = pressure of air
h = height in air
g = acceleration due to gravity
It is done by the special shape of the wing, if you ever noticed the upper side of the wing is slightly curved than the lower one. This curved shape of the wing is responsible for its flight.. Basic principle behind the flight is creating pressure difference between upper and lower side of the wing. it is done by applying the Bernoulli's equation. It is done by the special shape of the wing, if you ever noticed the upper side of the wing is slightly curved than the lower one. This curved shape of the wing is responsible for its flight.
When a plane is speeding the run way it is increasing the velocity of the air around the wings. Due to curved shape the velocity of the air is more than the lower side. By Bernoulli's equation fast moving air has low pressure than the slower one. Hence there is high pressure on the lower side of the plane as we know that air moves from high pressure to low pressure hence it exerts force in upward direction which lift up the plane.
This uplift of the plane balance the gravitational force hence it maintains it self in air. But it never need the same uplift through out the flight therefore another arrangements are made in the wings the are equipped with the Flaps these are the movable part attached at the back side of the wings. By moving it up and down pilot can control the uplift. these are also used to slow down the planes speed. When flaps are fully lowered they decrease the velocity of the air at the lower side of the wing also increase the surface area in contact of the air due to which overall speed of the plane also decreases, that is why planes land with there flaps fully down.
There are three dimensions within which the aircraft moves, and there is a simple control to change the direction of movement in each of those three dimensions:· Ailerons control Roll
· Rudder controls Yaw
· Elevators control Pitch
· Flaps increase drag and lift
Roll
The ailerons, located on the outer part of the trailing edge of the wings, control the roll or bank of the airplane. The two ailerons (one on each wing) work in opposite directions to each other. When the left one is raised, the right one is lowered.
Pitch
The pitch is the up or down angle of the aircraft, controlled by the elevator. It is located on the trailing edge of the horizontal tail assembly when the elevator moves up, causing the nose of the aircraft to point up. When elevator moves down, pitching the nose down.
Yaw
On the trailing edge of the vertical stabilizer on the tail is the rudder. This controls the yaw, or the left and right turning movement of the aircraft. On a real aircraft the foot pedals control this.
Flaps
The flaps are located on the inside of the trailing edge of the wings, inboard of the ailerons. When this set of control surfaces is lowered the cross-sectional shape (airfoil) of the wing changes. Lowering the flaps creates a greater surface area, increasing lift and drag. Flaps are most commonly used for landing.