EESA09H3 Lecture : Wind POWER.docx
14 Aug 2012
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Document Summary
Mythical flight who flew near to the sun. He created designs of hang gliders , helicopters and other flying machines but didn"t make them since he didn"t have the engineering skills to do so. Otto lilienthal, created 2000 glider flights from his own designs but died in a glider crash in 1886 in a glider mishap. Fluids that are moving faster tend to have lower pressure. Wings are shaped in a special way, so that the air moves faster over the top of the wing than underneath. Hence at the top of the wing there tends to be lower pressure and the bottom tends to have higher pressure, which creates a pressure gradient force pushing upwards. The wing experiences lift and the flight is enabled. This provides lift, which enables a plane to rise or a sailboat to move. Moving from high to low pressure pressure gradient force.
