Four primary forces govern how an airplane stays in the air:
The downward pull of gravity that lift must overcome. airplanes.webm
Airplanes are fixed-wing aircraft that use thrust from engines and the dynamic reaction of air against their wings to achieve flight. From the Wright brothers' first flight in 1903 to modern commercial airliners, aviation has shrunk the globe and revolutionized global travel and trade. Four primary forces govern how an airplane stays
The forward force provided by propellers, jet engines, or rockets. airplanes.webm
Generated by the shape of the wings (airfoils), which causes air to move faster over the top than the bottom.