From Technology Review published by MIT...
"Flap your arms for a while and you'll soon notice that the constant cycle of acceleration and deceleration requires and even wastes huge amounts of energy. And yet for birds, wing flapping is a highly efficient means of propulsion. A questions that still puzzles aerodynamicists is how birds are able to minimise the energy costs involved in flight while generating useful aerodynamic forces."
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Very interesting article.
ReplyDeleteIt's amazing how complicated it is to reverse engineer natural phenomena, when nature itself can easily develop such interesting mechanisms.