Balloon Festival Bashny.Net

International Balloon Festival in the Philippines, February 12, 2015. On the left - the ball Vincent Van Gogh.

Balloon - the balloon, which is used for flight gas is lighter than air. Unlike airships, balloons do not have engines for independent horizontal movement in the air.
Depending on the filling, distinguish balloon (balloons filled with hot air), charliere (filled with a light gas - usually hydrogen or helium) and Rosier (aircraft using both gas and air, placed in separate envelopes).
Modern balloons used for demonstration and sports fly, as brothers Montgolfier balloon, mainly filled with heated air. With the burner heats the air, and, as a sparse hot air is lighter than cold, the ball flies.
But the balloon there is a serious drawback due to the lack of engine: a balloon can not be controlled, because it flies to where it will bear the wind ...
As can be seen, the shell of balloons you can easily give a rather complex shapes.