If you are a frequent flyer, you've probably been at the airport waiting to jet somewhere on a winter trip when the voice of an airline employee announces over the intercom that there will be a slight delay while the plane gets deiced. But how does this process actually work, and why is it needed' As a mechanical engineer who studies frost growth and water droplets on surfaces, I have come to appreciate the importance of deicing planes. Indeed, deicing is an important safety step performed by the airlines on wintry days because of how snow and ice can affect the physics of flying. In short, deicing is necessary because snow and ice on airplane wings can decrease lift by as much as 30%. Lift is the vertical upward force that keeps a plane in the sky. It is generated when air flows over the wings of a plane. Ice and snow can alter how air flows over the wings, which can affect a pilot's ability to maneuver and control the aircraft. It can also increase the stall speed, which is not...
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