The oldest from of aircraft is the kite. It originated in china about 300 years ago .During the dynasty the chines Military used to attach bamboo pipes to the kite. The passing of wind through the pipes produced a whistling sound which caused enemy troops to panic and flee.
The name of kite comes from the grace full and soaring bird . Kites can be made from from paper light wood leaves. cloth and other lighter. Materials such as synthetics plastic nylon bamboo light wood aluminum and reed can be used for making the frame .For making of the string or line cotton is most suitable though polyester can also be used.
Most popularly kites are flown for recreational purposes however these are also used for scientific research and and for Military purposes recently there is a revival of kite festivals all over. One can see fascinating designs of colorful kites of various shapes and sizes during such festival Pakistan china japan India and Thailand have such Festival though these are also becoming popular in western counties.
These have led to innovation in the design of kites like the box kite bowed kite Parafoil delta kite and dragon kite lovers have established clubs and organize competition .It is interesting to know how kites fly. the forces of lift drag and gravity combine to keep a kite in the air. A kite must be flown in such a way that its angle against the wind called the angle of attack provides maximum lift to overcome both drag and gravity.
the angle of attack can be controlled by one or more short line called the bridles. In Pakistan kite flying is truly a sport of all. it is quite inexpensive and one does not have to depend open anything special play fields or even a team to enjoy it.like the free flight of one imagination dreams aspirations and ambition kits flying gives a release to the instinctive desire to fly high in the sky.