fuckyeahfluiddynamics: Birds generate extra lift with their tails, according to new measurements of gliding owls and raptors. Also, look at these gorgeous wingtip vortices! (Image and research credit: J. Usherwood et al.; video credit: Nature News;
tags: 구례콜걸샵ㄱㅏ격 카톡ｄ２０１０ . bit.do/ezgRJ,
from: https://www.tumblr.com/blog/view/wind1945/642700959789776896
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