Importance Of Airfoil

Introduction It is being called airfoil (In American) or aero foil (In British). Airfoil is the form of a wing or blade as example (rotor, turbine, helicopter’s wing……). When airfoil-shaped body move through fluid it produces aerodynamic force. The component force that placed 90 degrees to the motion direction is named lift force. And the component force placed parallel to direction of movement is named drag force. Subsonic flight airfoils have a rounded figure with edge. And in addition to that it is very sharped. With a same upper and lower curves. Hence working fluids are named hydrofoils are of similar function but deals with water. Besides, the result of angle of attack on an airfoil is mainly due to lift force. As it is oriented on

It can be used to build an aircraft fixed wings, take in consideration the helicopter’s rotor blade. Airfoils are also used in fans, turbines and compressors. Also you can define sails as an airfoil, and also sailboard’s lower surface. Such as keel and centerboard, they work on the same principle as airfoil by which they are similar in the cross-section. Swimming and flying living beings and even many plants employ airfoil or hydrofoil, for example bird wings, fish’s body and other creatures on sea bed. In addition to that, the airfoil shaped wing could make a downforce on any vehicle as spoilers used in cars, mostly on sport or supercars to make more stable and improve traction on high speed. Anything with an angle of attack in a moving fluid, it is found in the deck of a bridge, a building or a flat plate, will generate aerodynamic force especially lift force. But airfoils are more efficient of lift shaped that it generates lift in air with less drag so that is why it is used in an essential thing like planes because it is related to the lives of

This terminology defines the geometry of airfoil.

“The leading edge it is the point at the front of the airfoil and it have maximum curve shaped.” The trailing edge it is the point at the back of airfoil and it have lowest curve. The chord line it is a straight line linking the leading and trailing points The camber line it is the line where all points is satisfied and it is the middle between the upper and the lower surface” (Hurt, H,1965.).

Force balance

Tools

- shizzle

- 1 (2 cm thickness) wooden bar in the base 2 (100cm long and 1cm thickness) placed as an over placed T shaped

- 2 equal strings (20mm length, and they are both linked together with 17mm long and diameter 3mm)

- 2 (90 degrees) metal angled linkage

- 4 meccano metal