Scientists have found that birds' wings, while not as rigid as those of airplanes, are better able to adapt to different weather conditions, especially harsh ones, because they are able to stretch freely and adapt to changes in airflow  Taking a cue from nature, NASA scientists are working on wings that can bend and deform  The idea is that at high speeds, the plane's deformed wings are tucked back slightly to reduce drag and turbulence  As the plane slows down, the wings automatically extend forward to help it land faster and more smoothly  But deforming a wing is no easy task  The key is to create a deformable wing using special smart materials that flex and stretch automatically when exposed to external air pressure and stimulation  Among them, the wing material made of memory alloy can make the airplane wing change into a special shape in a certain air environment; Another important smart material is piezoelectric ceramics, which can respond sensitively to changes in voltage, temperature and other environmental factors  Scientists say such planes with flexible wings are at least 20 years away
At that time, our planes will become more intelligent, comfortable and safe, like all kinds of birds to adapt to various environments and fly freely
The wing material, made of memory alloys, allows the wing of an airplane to change into a special shape in certain air conditions