it's all about the aircraft wings,wings type,parts of the wing and their functions and some description about aerofoil...............

1. AIRCRAFT WING
PRESENTED BY:
THIRUMAL,
B.TECH[AERO].

2. What is Wing?
• A wing is a type of fin with a surface that
produces aerodynamic
force for flight or propulsion through
the atmosphere, or through another
gaseous or liquid fluid. As such, wings have
an airfoil shape, a streamlined cross-sectional
shape producing lift.

3. Types of Wings?
Based on
Structure
Position

4. Based on Position
1.High wing,
2.Mid wing,
3.Low wing,
4.Parasol wing,
5.Anhedral wing,
6.Dihedral wing,
7.Gull &
Inverted gull.

5. Based on Structure
1.Straight,
2.Eliptical,
3.Tapered,
4.Sweptback
5.Delta

6. ORIGIN AND WORKING
The Ancient Chinese discovered that kites with curved
surfaces flew better than kites with flat surfaces.
Lilienthal and Cayley, in the 1800s, demonstrated that a
curved surface produces more lift than a flat surface.
This led to the conclusion that a wing needs to have
camber. That is, the top needs to be slightly curved, like
a hump. The bottom is left flat or straight. An object
with this shape is called an airfoil. Often, the words
"wing" and "airfoil" are used interchangeably, but they
shouldn't be. Airfoil shapes are designed to generate as
much lift as possible while incurring as little drag as
possible.

7. HIGH LIFT
• When an airplane lands it is desirable to fly as slowly as possible.
Ideally for landing, an airplane would have a large wing with a very
cambered airfoil. However, airfoils designed to perform well at slow
speeds are not good for flying at faster speeds, and vice versa.
Airplane designers have developed a set of features that allow the
pilot to increase the wing area and change the airfoil shape to
compensate for this.
• The trailing edge of the wing is equipped with flaps which move
backward and downward. These are not to be confused with ailerons,
which are also located on the trailing edge of the wing, but have an
entirely different purpose. The flaps increase the area of the wing,
and the camber of the airfoil. With this increase in area, the airflow
has farther to travel which spreads the pressure difference between
the top and bottom of the wing over a larger area.

9. Wing parts
 Flaps: Flaps adjust the camber of the wings,
increasing lift. Flaps are normally fitted at the trailing
edge of the wings. Extending the flaps increase the
camber of the wings airfoil, thus increasing lift at
lower speeds, an important feature for landing.
 Slats:Slats adjust the angle of attack of the wings,
increasing lift. Slats are fitted at the leading edges of
the wings, and deploying them increases the angle of
attack of the wings, allowing the pilot to increase the
lift generated by the wing.

10. 3.Aileron:Ailerons increase or decrease lift asymmetrically, in
order to change roll and, thus, move the aircraft left or right while
flying. Ailerons are hinged sections fitted at the rear of each wing.
Ailerons work asymmetrically as a pair: as the right aileron goes
up, the left one comes down and vice versa, thus making the
aircraft roll right or left, respectively.

11. Aerofoil
• Leading Edge = Forward edge of the aerofoil
• Trailing Edge = Aft edge of the aerofoil
• Chord = Line connecting the leading and trailing
edge. Denotes the length of the aerofoil
• Mean Camber Line = Line drawn half way
between the upper and lower surface of the
aerofoil. Denotes the amount of curvature of the
wing
• Point of Maximum Thickness
= Thickest part of the wing
expressed as a percentage of the chord

12. Working of AerofoilThe basic principle behind an aerofoil is described
by bernoullis theorem. Basically this states that
total pressure is equal to static pressure (due to
the weight of air above) plus dynamic pressure
(due to the motion of air).
Air that travels over the top surface of the aerofoil
has to travel faster and thus gains dynamic
pressure. The subsequent loss of static pressure
creates a pressure difference between the upper
and lower surfaces that is called lift and opposes
the weight of an aircraft (or thrust that opposes
drag).
As the angle of attack (the angle between the
chord line and relative air flow) is increased, more
lift is created. Once the critical angle of attack is
reached (generally around 14 degrees) the
aerofoil will stall.

13. THANK YOU