Airflow across a wing

"It is often said that the lift on a wing is generated because the flow moving over the top surface has a longer distance to travel and therefore needs to go faster. This common explanation is actually wrong." Here, aerodynamics expert Professor Holger Babinsky from the University of Cambridge's Department of Engineering debunks a popular, yet misleading, explanation of how wings lift. For more information, read the accompanying story published by the University of Cambridge http://www.cam.ac.uk/research/news/how-wings-really-work/