bumble-bee [image: Image of jet airplane]
bumble-bee,aerodynamics says it cannot fly, but still it flies." -A. P. J. Abdul Kalam *What is aerodynamics? The word comes from two Greek words: aerios, concerning the air, and dynamis, which means force. Aerodynamics is the study of forces and the resulting motion of objects through the air.* * A propulsion system is a machine that produces thrust<http://www.grc.nasa.gov/WWW/K-12/airplane/thrust1.html> to push an object forward. On airplanes, thrust is usually generated through some application of Newton's third law <http://www.grc.nasa.gov/WWW/K-12/airplane/newton3.html>of action and reaction. A gas, or working fluid, is accelerated by the engine, and the reaction to this acceleration produces a force on the engine.* *In case of a bird or winged insect the air displaced by flapping of its wing lifts the body above the ground.* *But he scientist fail to explain the flying of imagination of a person where no aerodynamic laws is applicable. It appears that a person who is always in dream world is known as Bumbe bee.[?]* *You can just enjoy Bumble bee in the you tube* *http://www.youtube.com/watch?v=_ZvzZRV17rI&NR=1* *cnu.pne [?]* * * * *
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