What is the function of rear wings in an aircraft? Does it helps the aircraft during takeoff and landing?

Question

What is the function of rear wings in an aircraft? Does it helps the aircraft during takeoff and landing?

Answer 1

All wings support the air craft in air, some are fixed winged some are Milty winged and some have flaps or wing-lets on them. Mcdonnel Douglas even had kit to add wing-lets, it was to reduce turbulence and hence, it gave batter fuel efficiency so it will depend on what you meant by rear wings.

Nothing is added to the air craft without some effective over all advantage or improved safety.

Answer 2

those arnt wings those are the horizontal stabilizers. the elevators are attached to them. And the elevators are used to make the nose pitch up or down.

Answer 3

The rear wings have the opposite effect to a wing. They create a downward pressure which counters the unbalanced moment due to the airplane's centre of gravity not being located exactly on the resulting centre of pressure, which in addition to the lift generated by the main wing includes the effects of drag and engine thrust.

Elevators are control surfaces on rear wings, which control the aircraft's orientation by changing the pitch of the aircraft, and so also the angle of attack of the wing. An increased wing angle of attack will cause a greater lift to be produced by the profile of the wing, and a slowing of the aircraft. A decreased angle of attack will produce an increase in speed (a dive). The elevators may be the only pitch control surface present (and are then called a stabilator), or may be hinged to a fixed or adjustable surface called a stabilizer.

An elevator decreases or increases the downward force created by the rear wing. An increased downward force, produced by up elevator, forces the tail down and the nose up so the aircraft speed is reduced (i.e. the wing will operate at a higher angle of attack, which produces a greater lift coefficient, so that the required lift is produced by a lower speed). A decreased downward force at the tail, produced by down elevator, allows the tail to rise and the nose to lower. The resulting lower wing angle of attack provides a lower lift coefficient, so the craft must move faster (either by adding power or going into a descent) to produce the required lift. The setting of the elevator thus determines the airplane's trim speed - a given elevator position has only one speed at which the aircraft will maintain a constant (unaccelerated) condition.

Hope this clears the concept a bit

Answer 4

The horizontal wings make the nose rise or fall and the big vertical wing turns the plane left or right--like a rudder on a boat.

Answer 5

The rear wing (or elevators) slow the air flow at the trailing edge on the wing.

A plane is sucked  in to elevation by the speed of the air traveling over the wing.

Not the air pushing on the bottom,

Even the Stealth  (boomerang) plane has "rear wing" they are called elevator control tabs.

Ultimently the wings you seem to refer to control the pitch (up and down) driection of the body of the aircraft.

Elevators control , the pitch, roll , and yaw (left an right) of an aircraft.

They are the rear "wings" at the ends of the wings

Answer 6

The Rear horizontal wings or Elevators, help the aircraft descend and climb in all phases of flight. The also help to stabalize the aircraft and keep it aloft. They play a major role in takeoff, landing, climb, descend, and cruise. Without them the plane couldnt fly very easily.

Answer 7

Airplanes do not have "rear wings."  The tail fins of an airplane, collectively, are technically referred to as the "empennage."

Empennage design varies, but most include horizontal and vertical fins.  These are basic control surfaces and do not "help" the airplane--they are essential to flight.

For lots of information, including pictures and diagrams, try an internet search on "basic aerodynamics" or "aircraft controls."  To be really cool, go to the library and look it up.

Answer 8

The rear wings help the aircraft in all phases of flight.  They provide lift for that portion of the aircraft.  The rear wings also have a small panels on the trailing edge called elevators.  These elevators can be deflected up or down with the cockpit controls.  It they are tilted up the lift created by the rear wing is decreased.  This makes the tail fly down and points the nose of the aircraft up.  This causes increased lift on the main wings because the angle of attack of the main wing is increased.  Therefore the aircraft gains altitude.  The pilot will also increase the engine power so that the aircraft will not lose air speed (Like when you go up a hill in a car).  The opposite happens if the elevators are tilted down.

Answer 9

They stabilize the aircraft about its lateral axis.

Answer 10

In a conventionally designed airplane, the rear "wing" is the horizontal stabilizer.  It provides balancing forces in all phases of flight.

Upward lift comes from the wing (the front "main" wing).  The center of gravity of the airplane is the so-called "pivot point" where any movement in any direction acts around.  The center of gravity is just ahead of the wing, so the upward lift of the wing would actually cause the airplane's nose to be forced down.

The horizontal stabilizer is like a backwards wing.  It provides DOWNWARD lift to balance out the nose-down force created by the wing behind the center of gravity.  The amount of downward lift is varied by the use of the elevator, which is the control surface on the back of the horizontal stabilizer.  This is what allows the pilot to control the "pitch" (amount of nose-up or nose-down) of the airplane.