Date: 23 Jan 2007 11:44 (UTC)
From: [identity profile] the-starshadow.livejournal.com
Hmm, that's quite interesting. I suppose the adjustable shape of a bat's wings would also allow for different configurations to take into account differing Reynolds numbers.

Date: 23 Jan 2007 12:01 (UTC)

Date: 23 Jan 2007 15:51 (UTC)
From: [identity profile] annvole.livejournal.com
The links in that article are quite interesting too, like this one:

(an aircraft that goes from slow glider to supersonic jet)
http://www.livescience.com/technology/060716_popsci_switchblade.html

as well as they never mentioned the real advantage of bat wings, slow speed with responsive movement for catching insects. There is an article about early bird designs having four wings (including the Archaeopteryx after re-examining them) which gave them slower flight and sharper turning:
http://www.livescience.com/animalworld/060922_archaeopteryx_wings.html

I was also thinking that the extra pressure created by the air foil shape becomes the "wind beneith their wings" as their long trailing skin bubbles like a parachute in that wind tunnel testing and makes a bubble or risen air in the smoke trails. They also mentioned the double action of lift during both phases of the wing flapping. I noticed that the wing part beyond the wrist makes a swinging arc forward over and above the forward movement of the "arm" part of their wings and then while bringing the wings back and up for the next stroke, the arms are stretched straighter and make fine gliding wings while the folded finger parts hold the air in the sides to make that parachute thing again behind the "arm" airfoil.

I am so pumped about animating some more realistic aerial action of somewhat realistic anthro-bat characters! First I will use the models I am building to do Nightlife but then on to animating some sort of aerial bat scene.

Date: 23 Jan 2007 21:40 (UTC)
From: [identity profile] dewhitton.livejournal.com
I knew about the finger folding during flight, but I had no idea the membrane stretched so much on the down stroke.

Date: 23 Jan 2007 23:07 (UTC)
From: [identity profile] lizardling.livejournal.com
oooooh. cool article!

Date: 24 Jan 2007 01:04 (UTC)
chezmax: (Default)
From: [personal profile] chezmax
That's neat!

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