🐧💨 Ever wonder how penguins swim so fast? It's all about the wing angle! 📐 New research is even helping design better aquatic vehicles. Dive into the details!
and, instead, evolved wings hyper-specialized for movement in the water. They use their wings underwater as if they are flying in the sky, flapping and gracefully maneuvering them in a way that helps them hunt prey and escape danger.which is the opposite of what planes and flying birds do. During powered turns, penguins flap their wings, but in gliding turns, they hold them to the side.
While they may resemble airplane wings covered in feathers, a penguin’s wings compared to their flying counterparts are shorter and flatter. And to adjust their swimming positions in the water, penguins change the angle of their wings by pitching and flapping. The short and dense feathers along their wings trap air between the skin and water to reduce friction and turbulence as they speed on.
“We proposed the concept of angle of thrust, which explains why finned wings generate thrust: Thrust is primarily determined by the angle of attack and the relative angle of the wings to the forward direction,” says Prapamonthon in a press release. “The angle of thrust is an important concept in studying the mechanism of thrust generated by flapping motion and will be useful for designing mechanical wing motion.
According to the researchers, the angle of attack is the wing's angle and the incoming flow of water. The steeper angle of attack on the water, the more lift it will create. For their next study, the team plans on using a more realistic 3D penguin model to observe further how a penguin’s wings move in water when they start swimming, brake, turn and jump in and out of the water.
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