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The snake dangle 49 ft ( 15 meters ) off the ground , tail entwined around a leg . dead , the animal rear up and launches , flinging its soundbox toward the forest base .
In other reptiles , the leap would be suicidal , or at least an invitation for broken off-white . But the snake in question is aChrysopelea paradisi , one of five related metal money of tree - dwelling snake from Southeast and South Asia . When these snakes leap , it ’s not to nosedive ; it ’s to glide from tree to tree , a effort they can carry through at distance of at least 79 foot ( 24 m ) .
The paradise tree snake undulates mid-flight.
What no one knows is precisely how these reptiles pull off tofly so farwithout wings . Now , a unexampled study finds that the snakes ' awesome aerial abilities may all be in the way they move .
" For any flier , you really need to know the basics : How tight is it depart , what ’s the shape of the flier , what is the shape of the wing , " study generator Jake Socha , a life scientist at Virginia Tech , told LiveScience . " With this newfangled study , we now really get insight into what the exact position of the body is as it ’s in this really uprise glide . "
Socha presented his research today ( Nov. 22 ) at the American Physical Society Division of Fluid Dynamics group meeting in Long Beach , Calif. The study will be published this week in the diary Bioinspiration and Biomimetics .
Aerial aerobatics
Socha has been researching the aerodynamics of gliding ophidian for years . His previous studies have found that these snakesflatten themselvesas they launch , roll side - to - side as if they ’re slithering in mid - air . They glide tight , between 26 and 33 foot per second ( 8 to 10 meters per s ) , Socha say .
To find out more about how the snakes position themselves during the glide , Socha and his colleague videotaped ophidian launching themselves from the 49 - fundament tower toward the primer . The investigator put white loony toons on the snakes ' bodies so they could count where the animate being was in space at each point during the flight . The applied science is similar to that used to do motion seizure for video game or quicken movies , Socha said .
The snakes are more than happy to glide for the cameras , Socha said .
" They glide ; that ’s what they do , " he say . " So they ’re like , ' I ’m outta here , I ’m gon na go down there . ' "
Next , the researchers used the video to model and analyze the forces act on the ophidian ' bodies . They found that the serpent are n’t horizontal during their soaring ; they ’re in reality tilted up about 25 degree relative to the airflow created by their flight . They hold the front half of their bodies fairly still , with the exclusion of theside - to - side undulations . Meanwhile , their tails move up and down . TV of serpent trajectory is useable atSocha ’s website .
" We in spades find that there are good place to be and forged billet to be , place that augment your forcefulness production and places that make it less favourable , " Socha said . " It seems that the snake is using a shape that is highly favorable to being a good glider . "
astonishingly , although the Hydra move down toward the ground , the net force on their body during the glide is an upward force play — at least in short . That means that if you add up every force playact on the snake , Socha say , you ’d be leave with a small force out labor the snake skywards .
The snake does n’t actually start moving up in part because they do n’t fly far enough for the net up force to have an effect , and in part because the up force disappear quickly , Socha said .
Serpents in flight
Transient or not , the fact that the snake in the grass is n’t glide in equipoise is exciting , said Greg Byrnes , a postdoctoral researcher at the University of Cincinnati who study gliding mammals .
" You have something that does n’t look like it should be able to fly at all , and it in reality is able to take flight well enough that it supports more than its trunk weight with military group , " Byrnes , who was not involved in the research , tell LiveScience . " That ’s a pretty cool thing . "
" For a long , long time , people have recollect it ’s a very simple process , basically like fell a paper aeroplane , " Byrnes tally . " It turns out that ’s not true . "
The next step , Socha said , is to work out how the snakes ' soundbox stead impact its glide .
" The whole snake itself is just one long extension , " Socha said . " That wing is constantly reconfiguring , it ’s always reforming and contorting … part of the body , depending on where they are in space , might be interact with the wake from the front part of the body , and this might hurt or help or be neutral . "
The findings could eventually be applicable to build up small , agileflying fomite , Socha said . But , he state , they ’re also exciting in their own right hand .
" Why is it that you do n’t tumble out of the sky if you ’re a serpent ? " he say . " Now we have the framework for doing detailed study of the aerodynamics . "
