| Planes are able to rise to a certain altitude and | | | | variation in pressure between the top and bottom of |
| maintain it by utilizing a combination of the Bernoulli | | | | the wing results in a net upward force, or lift. The air |
| effect and the simple momentum transfer in the | | | | over the wing is forced to expand to a greater volume |
| airflow to generate airlift. When the internal pressure | | | | than the volume of air flowing under it. |
| reduces with respect to the increased stream velocity | | | | Dynamic momentum transfer from the airstream can |
| in a fluid, the phenomenon is known as the Bernoulli | | | | also generate lift for planes. In the dynamic momentum |
| Effect. In most cases, the pressure in a fluid decreases | | | | transfer, the tilt or angle of attack, of the wing in |
| as the fluid moves faster. This effect explains in part | | | | relation to the overall direction of motion causes the |
| how wings help to lift an airplane. The cross-section of | | | | flow of air striking underneath the wing to be turned, or |
| the wing is designed in a particular way so that the | | | | deflected, downward. The deflection induced by the |
| distance from the leading edge and the trailing edge is | | | | wing imparts a downward momentum. |
| greater along a path that runs over the wing than | | | | Since the first flight of the Wright brothers, airplanes |
| under it. This is how the Bernoulli effect generates lift. | | | | have come a long way in their development. They |
| As the aircraft is propelled ahead, air flows both over | | | | have become bigger in size and more technologically |
| and under the wing. As the air travels a greater | | | | advanced. They enable people to commute faster as |
| distance over the wings, the air pressure above the | | | | compared to any other mode of transportation, which |
| wing is less than the air pressure beneath it. The | | | | helps to save a great deal of time. |