珍珠湾

岳东晓

Zhen Zhu Wan Online Community Club of Elite Chinese

Zhen Zhu Wan Online Community Club of Elite Chinese


If an ornithopter can fly like a bird,it could remain airborne on upswelling air
Replying to: drones at best last 45 minutes in the air. too much energy waste on uplift drag. -- chaingun Post ReplyForum


ChairmanMaoHamet

11/30/2022, 00:28:53




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https://www.audubon.org/news/these-masters-sky-can-fly-hours-or-days-while-barely-flapping

https://www.npr.org/sections/thetwo-way/2016/10/27/499635084/this-bird-can-remain-airborne-for-10-months-straight

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