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Author Topic: Flight  (Read 6037 times)

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AGelbert

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Nothing flies better than a Dragonfly!
« on: December 28, 2013, 07:24:03 pm »

Please note that the "primitive" insect above called a dragonfly (found in fossils allegedly over 500 million years old with the exact same morphology as a "modern" dragonfly) is considered PRIMITIVE because it has FOUR WINGS. However, science JUST LEARNED that it can outfly anything on the planet BECAUSE those four wings are independently articulated for in-phase or out-of-phase wing pattern flight (22%less power required!). This is a box canyon logical bag of worms conundrum for evolutionary true believers. Good!

Dragonfly design tips
 
by David Catchpoole


Just how can the dragonfly perform its energetically-demanding aerial acrobatics—flying backwards or forwards, fast, slow or hovering—and remain airborne for such extended periods?

The answer, in part, is that it has four wings.

While many flying insects use only a single pair of wings (and very well, too1), dragonflies have ‘unusual  musculature’ that allows them to move each of their four wings2 independently, which is a key factor in their ability to perform “astonishing acrobatics”.3


It had been thought that such out-of-phase flapping comes at a cost, i.e., reducing the amount of lift the insect can generate.   

However, bioengineers have built a robotic version of a dragonfly, attaching sensors at the base of the robot’s wings to record lift and drag forces, allowing researchers to calculate aerodynamic efficiency.4,5 And it turns out that in out-of-phase flapping, the hind wings can extract extra energy from the wake of air sent by the front wings  , reducing aerodynamic power requirements by up to 22% compared with a single pair of wings;D This mechanism, the researchers explained, “is directly analogous to that exploited by coaxial contra-rotating rotors, exemplified by helicopters such as the Kamov Ka-50.”4

What’s more, dragonflies have the flexibility to switch between out-of-phase flapping and in-phase flapping as appropriate. When taking off, for example, real dragonflies synchronise their wing beats, thus they are able to lift and accelerate better than if they used only two wings or four out-of-sync wings.

With this new insight into the aerodynamic efficiency of out-of-phase flapping, engineers hope to apply it in the next generation of flapping micro air vehicles.

As one bio-engineer explained, battery life limits how long micro air vehicles can stay aloft, so “any tips or tricks which enhance aerodynamic efficiency will be warmly welcomed.”5

It defies reason to suggest that an energy-efficient aerial acrobat such as the dragonfly was not intentionally, and intelligently, designed. 


In fact, the researchers involved in this aerodynamic efficiency study apparently recognized the difficulty their finding presents to the widely-accepted evolutionary scenario, which posits that four-winged dragonflies arose long before (i.e., are “more primitive” than) the two-winged Diptera:    





“Caution must be applied when interpreting the biological significance of the above observations. Suggesting an evolutionary advantage to either two-winged or four-winged forms is unwise, considering the success and diversity of the true flies (Diptera), and yet the maintenance of the four-winged form by dragonflies since the Carboniferous.”4,6   


Surely it makes much more sense to say that four-winged dragonflies and two-winged flies were each designed to do what they DO do, and what they DO do, they do well!  ;D

http://creation.com/dragonfly-design

You know, it takes a special kind of Homo SAP arrogance combined with stupidity and denial of reality to claim dragonflies have "UNUSUAL" wing control musculature when these very same intelli-MORON evolution believing "scientists" believe dragonflies have been around for 100s of millions of YEARS!

They would be more accurate to say dragonflies never evolved. 

But they will never say anything to disrupt their evolutionary merry myth making paradigm. 



Listen Birdbrain, I'm the king of flight, not you!  ;D
« Last Edit: August 30, 2015, 08:39:57 pm by AGelbert »
Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

 

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