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Topic Summary

Posted by: NormanSoync
« on: October 19, 2019, 03:10:07 am »

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Posted by: AGelbert
« on: June 25, 2019, 07:30:59 pm »

Custer channel wing
252,480 views


Tom Stanton

Published on Oct 5, 2018
Ever wondered if a wing can produce lift at zero ground speed?

Here is some more information about the Custer channel wing:

Full scale test flights -

Channel wing as potential VTOL/STOL (Download link) - https://goo.gl/P14cZs
Air & Space Article -  https://goo.gl/6FaYM7
Robert Novell's Blog - https://goo.gl/SxNegJ

3D printer sponsored by AnyCubic: https://goo.gl/g3Z7yN

3D Printer filament sponsored by 3D Printz UK: https://3dprintz.co.uk/

Enjoy my videos? These are made possible due to help from my Patrons. If you wish for me to continue making videos, please consider supporting my efforts: https://www.patreon.com/tomstanton
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Category Science & Technology
Posted by: AGelbert
« on: June 25, 2019, 06:31:09 pm »

The ideal shape for a multirotor ‘ducted-fan’ that can dramatically improve thrust and flight time.

Posted on January 14, 2015 by Richard

2018 update: User Wob Barley has built a working model of this duct based on David’s model (see update below) and done some tests which suggest an impressive 40% efficiency/40% thrust increases over open propellers. Here is a video of the test flight.


Learn more: 


https://capolight.wordpress.com/2015/01/14/quadcopter-rotor-duct/
Posted by: AGelbert
« on: April 28, 2019, 02:15:52 pm »

The Giant Bird That Got Lost in Time
492,198 views


PBS Eons
Published on Mar 12, 2019

The California condor is the biggest flying bird in North America, a title that it has held since the Late Pleistocene Epoch. It's just one example of an organism that we share the planet with today that seems lost in time, out of place in our world.

Thanks as always to Studio 252mya for their wonderful paleoart. You can check out more of their work here: https://252mya.com

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Super special thanks to the following Patreon patrons for helping make Eons possible:

Katie Fichtner, Anthony Callaghan, XULIN GE, Po Foon Kwong, Larry Wilson, Merri Snaidman, Renzo Caimi, Ordenes, John Vanek, Neil H. Gray, Marilyn Wolmart, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, الخليفي سلطان, Gabriel Cortez, Marcus Lejon, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Philip Slingerland, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Daisuke Goto, Hubert Rady, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ron Harvey Jr, Jacob Gerke, Alex Yan

If you'd like to support the channel, head over to http://patreon.com/eons and pledge for some cool rewards!
Posted by: AGelbert
« on: April 23, 2019, 07:40:39 pm »

Opensource Ornithopter Prototype. Arduino Powered and Remote Controlled.

By gabbapeople in Arduino


Learn more:   

https://www.instructables.com/id/Opensource-Ornithopter-Prototype-Arduino-Powered-a/
Posted by: AGelbert
« on: April 16, 2019, 09:37:15 pm »

   


Opensource Ornithopter Prototype. Arduino Powered and Remote Controlled


Hi folks! 😀

This instruction is a story about how I made an ornithopter prototype.

For those who do not know, an ornithopter is a machine designed to achieve flight by flapping wings like a real bird. The idea was to create an ornithopter from scratch, to control it remotely, and of course to make it fly.

Please do not judge; I'm not the professional of the aircraft industry. So, not everything works as I would like, but it still does.

Instead of photos, this instruction prevails by graphic schemes. The real result can be seen in a multi-series video on the Youtube channel. If you enjoy this guide, subscribe to the channel. The first series is already online.

The instruction will be corrected and supplemented with material over time. The ornithopter will also be improved.

At this moment the instructable can be divided into the following chapters: 🧐

Posted by: AGelbert
« on: October 19, 2018, 02:45:25 pm »

 

New study reveals why dandelions are among the best fliers — they take to the air in a unique way

LAST UPDATED ON OCTOBER 19TH, 2018 AT 4:57 PM BY MIHAI ANDREI


SNIPPET:

Dandelions use a bundle of bristly filaments, called a pappus, to help keep their seeds aloft for dispersal. After the pappus takes to the air, it also prolongs the descent of the seed, enabling it to be carried much farther away. This is not uncommon in the plant world, as many other species employ a similar strategy — but they have a wing-like membrane instead of the spiky pappus.


So Naomi Nakayama, Ignazio Maria Viola, and colleagues set out to study exactly what happens to the dandelion flight. They constructed a vertical wind tunnel to visualize the flow around freely flying and fixed dandelion seeds, employing long-exposure photography and high-speed imaging to monitor any effects. They illuminated the seeds with a laser to make the entire system easier to visualize.

Researchers found that air does indeed flow through the bristles of the pappus, but the amount of air is very closely controlled by the spacing between the bristles, and this is very important. This particular structure formes a stable, doughnut-shaped air bubble, floating around each pappus. They call this air bubble a vortex ring.

Full article:

https://www.zmescience.com/science/news-science/dandelions-best-fliers-19102018/

Agelbert NOTE: Check out the video below to get a clearer understanding of what they disovered. 👀 🧐   

Posted by: AGelbert
« on: March 08, 2018, 01:35:24 pm »

An Eagle nesting in Catalina Island
Agelbert NOTE: At the time of this posting you can watch and hear an interesting territorial display by a Bald Eagle 🦅 with two eggs in her nest. Towards the middle of the video, you can see the eagle move around and make noises and open her wings as a bird makes passes nearby. Watch to learn how an eagle sounds 🔊 when it is issuing a warning to not come any closer.



https://explore.org/livecams/bald-eagles/bald-eagle-west-end-catalina


Posted by: AGelbert
« on: January 14, 2018, 09:20:36 pm »

Sky Hunters, The World of the Dragonfly

The Secrets of Nature

523,680 views


The Secrets of Nature

Published on Dec 2, 2014

They hover over ponds and pools and inhabit the banks of rivers and streams. With their dazzling metallic colours and unique ways of flying they are truly jewels of the air.

This film presents dragonflies as they have never been seen before. Fascinating close up shots take us into the world of these insects, which have lived on earth since the age of the dinosaurs.

Spectacular super slow motion shots and elaborate computer animation uncover, for the first time, how dragonflies capture their prey at lightning speed while flying and how they mate in the air.

Underwater photography reveals the development of the predatory dragonfly larvae while time lapse sequences show the emergence of the fully grown insect.

However these amazingly colourful flying acrobats are in danger. The dragonfly's preferred habitat in and around water is rapidly diminishing, which, in Europe alone, has pushed around 80 species to the brink of extinction.   
Posted by: AGelbert
« on: December 07, 2017, 10:30:05 pm »


Harpa Cristã instrumental em Flauta Andina

Posted by: AGelbert
« on: August 28, 2017, 02:12:55 pm »

Posted by: AGelbert
« on: July 29, 2017, 05:22:52 pm »

Splish, Splash: Why Do Birds Take Baths?

BY JOE SMITH

MARCH 9, 2015

A cardinal at a bird bath. Photo: Flickr user ehpien under a Creative Commons license.

What does science tell us about the importance of a good bath to a bird?

The answer: surprisingly little!
  ;D

A study published in 2009 stated it plainly: “Birds of most species regularly bathe in water, but the function of this behavior is unknown” 1.

This post is about the cool green science of bird baths: what we know and intriguing areas of inquiry for future research.

Rub-a-Dub-Dub, Many Birds in the Tub

Despite the lack of knowledge about the function and importance of baths to birds, we all know that birds (like the rest of us) love having water around for bathing and drinking.

When working with migrant birds in the Yucatan Peninsula, I first began to understand how seriously birds take the business of bathing. We were studying warblers that were typically territorial. These birds frequently engaged in threat postures and even in fights to enforce the boundaries between their exclusive home ranges at our mangrove study sites.

Birds love hanging around water. Photo: Flickr user Prayitno under a Creative Commons license.

But at a communal bird bath, there was a nightly truce.  ;D

Each evening at dusk, in a special spot in the mangroves where a freshwater spring bubbled up from the ground, numerous American redstarts, northern parulas, magnolia warblers, common yellowthroats and yellow warblers took turns bathing.

One by one, they shared this little oasis before going to roost for the night.

Seeing territorial warblers calmly taking turns for a bath tells us that for a bird, having access to water for bathing is worth checking one’s combative tendenciesat least for a few minutes.   

Why Birds Take Baths

So, what’s so important about a bath? ???

Starlings that take baths may be better able to elude predators. Photo: Flickr user NatJLN under a Creative Commons license.

The number of relevant scientific articles can be counted on one hand. There are very basic descriptions of the mechanics of bird bathing in North American2 and Australian birds3, an experimental examination of wetting and drying of disembodied feathers4, and a recent pair of studies that experimentally deprived captive starlings of bath water 5,1.

Although the functions of bird bathing aren’t clearly known at this point, these studies suggest that bathing plays an important role in feather maintenance.

Feathers are a bird’s lifeline: they insulate, waterproof and, of course, provide the power of flight.

Feathers get replaced once or twice a year. In the interim, they need to be kept in good condition. The sun, feather-munching mites, bacteria and gradual wear take a toll on feathers. A set of year-old flight feathers look like they’ve been through the ringer: they are frayed and dull.

Photo: © Larry Niles A good bath may keep those precious feathers in the best condition possible for as long as possible.

Two recent studies on captive starlings have progressed our understanding a bit further. In one paper, Brilot and colleagues hypothesized that depriving a bird of a bath would result in more disheveled feathers and translate into poorer flight performance.

They tested a group of freshly-bathed starlings and a group that had been deprived of a bath for three hours prior to the experiment. The starlings deprived of a bath were clumsier when flying through an obstacle course made of vertically-hung strings, bumping into more strings as they flew.

In their second paper on starlings, the research team examined whether the bath-deprived starlings knew they were clumsier. They did this by presenting bathed and unbathed groups of birds with recordings of starling predator alarm calls – and delicious meal worms – at the same time.

The experiment indicated that birds with access to bath water were more willing to let their guard down and feed, despite the recorded call signaling the presence of a predator. The authors suggest that the unbathed birds were more cautious because they were aware that their ability to escape was impaired.


This work tells us that, beyond preserving feathers over the long term, bathing even makes a bird a more agile flier and more adept at escaping predators in the short term.

These studies are helpful, but the function of bathing still eludes us.

How does it make these birds better fliers? Does it help realign the tiny barbs that hold feathers together? Does it help distribute protective oils? Does it improve feather performance in some other way?

This all leaves me wondering about those birds in the Yucatan. Our research was focused on revealing differences in habitat quality among individuals, mainly by measuring the food resources of the birds. We reasoned that more food equaled birds in better condition with a better chance of survival.

But maybe we were ignoring another important aspect of habitat quality – access to bathing water. We see from the starling work that being deprived of a bath could make an unbathed bird easier to catch, so baths might play a role in survival too.

Until we get an answer from science, we will need to rely on common sense and keep those backyard bird baths full.

Preparing Your Backyard Bird Bath

Many of us with bird feeders also have a bird bath to go along with it. Even in the coldest months of the year, I’ve found that birds are eager to take baths.    :o

I recently poured a warm tea kettle of water into my frozen bird bath and there was an instant scrum as the cardinals and white-throated sparrows jockeyed for position around the bath.

A heater keeps the backyard bird bath operational all winter. Photo: Flickr user techno_nanna under a Creative Commons license.

A more sophisticated approach to maintaining a bird bath in winter is to use a bird bath heater.

Misters keep water fresh and brings a lot more attention to the bird bath. They are a great bird attractor during the spring and summer when people typically aren’t feeding birds.

Although it would be nice to know the exact functions of bird bathing, a lack of scientific knowledge won’t ever get in the way of a good bath.



REFERENCES

Brilot, B. O., Asher, L. & Bateson, M. 2009 Water bathing alters the speed–accuracy trade-off of escape flights in European starlings. Anim. Behav. 78, 801–807.
Slessers, M. 1970 Bathing Behavior of Land Birds. The Auk 87, 91–99.
Verbeek, N. A. M. 1991 Comparative bathing behavior in some Australian birds. J. Field Ornithol. 62, 386–389.
Van Rhijn, J. G. 1977 Processes in feathers caused by bathing in water. Ardea 65, 126–147.
Brilot, B. O. & Bateson, M. 2012 Water bathing alters threat perception in starlings. Biol. Lett. 11.
TAGS: Birds, Research


Joe Smith, PhD, explores the lives of the birds around us by sharing insights from scientific research. As an ecologist for a New Jersey-based conservation services company, he helps to restore coastal ecosystems and the migratory birds that depend on them. Joe lives in the birding hotspot of Cape May, NJ and has done field research with birds throughout the U.S. and Latin America. He writes about nature in his backyard at www.smithjam.com.

https://blog.nature.org/science/2015/03/09/backyard-bird-baths-science-birding-wildlife-habitat/

Agelbert NOTE: If you share your household with a kitty, please make sure the kitty does not have easy access to the bird bath as the following clever kitty has:  ;)

Birds, what birds? I'm just here enjoying the view.   



Posted by: AGelbert
« on: July 11, 2017, 02:53:33 pm »

When Does an Aging Bird Stop Laying Eggs?     

Laysan albatross in graceful flight

A Laysan albatross typically lives for around 40 years, spending most of its life in the air, flying thousands of miles every year in search of food. Once an albatross reaches adulthood, it’s difficult to determine the bird's age, but ornithologist Chandler Robbins banded one particular Laysan albatross back in 1956, so biologists know that the bird is still going strong. In fact, at around 66 years of age, the bird that Robbins named Wisdom just hatched another chick at her breeding home on Midway Atoll in the Hawaiian archipelago. Wisdom, the world's oldest-known wild breeding bird, is providing scientists with valuable information about reproduction in older animals.

Not ready for retirement:    

The Laysan albatross lays no more than one egg per year, and sometimes none. Wisdom and her mate return to the same spot every year to rekindle their relationship.

Laysan Alabatross Couple


Albatrosses mate for life, but Wisdom has outlived several males  :o  :D. She is believed to have raised 30 to 36 chicks over her lifetime. 

We Albatross ladies may just have one at a time, but we can do that for MANY years!  ;D


Renowned Ornithologist Chandler Robbins     

Chandler Robbins passed away in March 2017 at the age of 98; the renowned ornithologist was still volunteering with the Bird Banding Laboratory in Laurel, Maryland, during the last years of his life. 


http://www.wisegeek.com/when-does-an-aging-bird-stop-laying-eggs.htm
Posted by: AGelbert
« on: February 17, 2017, 01:42:32 pm »

From egg to flight: Hummingbirds 

I am watching two hummingbird chicks almost ready to fly. You can watch them live at the link below.

https://youtu.be/O8CIc1X_bfg
Quote

IMPORTANT:   Do NOT feed hummingbirds sugar water or "nectar" for more than 24 hours.   It will harm the bird. Babies fed sugar water or "nectar" may develop deformities or die. 

What to Do If You Find a Hummingbird

http://www.gahummer.org/what_to_do.htm
Posted by: AGelbert
« on: December 17, 2016, 06:51:40 pm »


Which Bird Can Glide the Farthest?


The wandering albatross is known for its ability to fly at great speeds and go long distances with very little effort. This seabird is capable of traveling 10,000 miles (16,093 km) in a single journey and circumnavigating the globe in as little as 46 days. Scientists have long wondered how this fantastic flyer can travel up to 600 miles (966 km) a day without flapping its wings.


The secret is its mastery of “dynamic soaring,” which involves gaining height by angling its enormous wings while flying into the wind, then turning and swooping at speeds as high as 67 mph (108 km/hr).


A fast flyer on endangered list:

•The albatross’ lifespan is roughly 60 years and its wingspan is the widest of any bird -- up to 3.5 meters (11.5 feet).


•While the albatross has existed for about 50 million years, all 22 species are now endangered. :(  The birds frequently get caught in baited fishing lines, resulting in 100,000 deaths a year.

•The idiom “having an albatross around your neck" is attributed to the poem “The Rime of the Ancient Mariner” by Samuel Taylor Coleridge. In the poem, a sailor brings bad luck to his ship and crew after shooting an albatross. When the ship loses wind near the equator and runs out of water, he’s forced to wear the dead bird around his neck as punishment.

http://www.wisegeek.com/which-bird-can-glide-the-farthest.htm
Posted by: AGelbert
« on: November 23, 2016, 06:31:31 pm »


Why Don't Birds Ever Collide?

You’d think that with all the flocks of birds navigating the sky, there would be the occasional head-on collision. But birds are highly skilled aviators with fast reflexes -- and a good understanding of what to do when two are on the same flight path. A recent study at Australia’s University of Queensland found that birds appear to know to veer right if another is headed straight at them.

The researchers tested seven male budgerigars (also known as “budgies” or parakeets) in a 70-foot (21.3 m) tunnel over a four-day period, and recorded zero mishaps. About 85 percent of the time, the birds veered right, and often adjusted their altitude to avoid mid-air crashes.


The aerial rules of engagement:

•In the study, the birds rarely flew at the same height, suggesting that individual birds may have specific altitude preferences.

•Interestingly, aircraft pilots are taught to veer to the right when they perceive an imminent head-on collision with another aircraft, said Mandyam V. Srinivasan, head of the research group.

•Birds are more prone to collisions with man-made obstacles. Sometimes, birds fail to see wires, especially near dawn or at night. Reflections from glass windows can also fool them, sometimes with deadly results.

http://www.wisegeek.com/why-dont-birds-ever-collide.htm



Posted by: AGelbert
« on: October 13, 2016, 09:37:38 pm »

Posted by: AGelbert
« on: July 05, 2016, 07:00:59 pm »

Agelbert NOTE: Great frigate birds are fantastic gliders. Even their wings seemed designed for light weight for maximum lift because they do not have the oils all other sea birds secrete to make their wings waterproof so they can rest on the ocean surface. Great frigate birds must stay aloft, and even catch its prey in the air. They follow tuna and dolphin around because the flying fish and others jump out of the water to escape the threat below. That's when the Great frigate bird becomes the threat from above.

PHYS.ORG
Biology Plants & Animals 

Great frigate birds found able to fly for months at a time

July 1, 2016 by Bob Yirka report


A juvenile frigatebird. Credit: Henri Weimerskirch CEBC CNRS

(Phys.org)—A small team of researchers with members from France, the U.K., Canada and Germany has discovered that the great frigate bird (Fregata minor) is able to stay aloft for up to two months at a time. In their paper published in the journal Science, the team describes how they affixed trackers to several of the birds as part of a two-year study, what they found, and even offer some ideas on how the birds manage to sleep. Raymond Huey and Curtis Deutsch, with the University of Washington in Washington State, offer a Perspective piece on the work done by the team in the same journal issue.

To learn more about the birds, the group managed to capture several specimens during their infrequent and short stays on land—they held on to them just long enough to affix extremely lightweight transmitters that were capable of monitoring GPS positioning, altitude, heart rate and acceleration in any direction. That allowed them to track the movements of a variety of birds and how much energy they were exerting.

In analyzing the data, the researchers discovered that the birds were able to stay in the air so long for two reasons; the first is that the expend very little energy because they rely on updrafts to keep them aloft. The second reason is because when they do eat, they simply swoop down out of the air to catch a fish that has jumped out of the water to avoid a predator from below. They have to be careful though, because they do not have waterproof wings.

In charting their flight patterns, the team found that the birds travel incredible distances—sometimes covering up to 250 miles in a single day. They also found that the birds were able to take advantage of another type of updraft when need be, they would slip under a cumulus cloud and allow themselves to be very quickly pulled upward (up to 5 meters per second), without having to flap their wings a single time. Such sudden elevations could take them as high as 4,000 meters, where the air is extremely thin, and the temperature freezing. From there, they would glide down for hours, until reaching another updraft. 

(EXCELLENT VIDEO at article link) Credit: Aurelien Prudor / Henri Weimerskirch CEBC CNRS

The birds live in the air over the Pacific and Indian Oceans, which means they are subject to the doldrums, but they have, the team found, discovered a means for handling them as well —they simply hang around on the edges taking advantage of the updrafts in the small clouds that develop around the edges.  ;D

The birds are able to glide so well, the team notes, because they have the least amount of body weight distributed over the total area of their wings of any bird.  :o    They also suggested the birds might actually sleep for just minutes at a time as they are carried effortlessly up into clouds.
 
Explore further: Study shows alpine swift can stay aloft for 200 days

More information: H. Weimerskirch et al. Frigate birds track atmospheric conditions over months-long transoceanic flights, Science (2016). DOI: 10.1126/science.aaf4374

Abstract

Understanding how animals respond to atmospheric conditions across space is critical for understanding the evolution of flight strategies and long-distance migrations. We studied the three-dimensional movements and energetics of great frigate birds (Fregata minor) and showed that they can stay aloft for months during transoceanic flights. To do this, birds track the edge of the doldrums to take advantage of favorable winds and strong convection. Locally, they use a roller-coaster flight, relying on thermals and wind to soar within a 50- to 600-meter altitude band under cumulus clouds and then glide over kilometers at low energy costs. To deal with the local scarcity of clouds and gain longer gliding distances, birds regularly soar inside cumulus clouds to use their strong updraft, and they can reach altitudes of 4000 meters, where freezing conditions occur.

Journal reference: Science search and more info website

http://phys.org/news/2016-07-great-frigate-birds-months.html
Posted by: AGelbert
« on: April 07, 2016, 06:58:38 pm »

Why Butterflies Zig Zag "wildly"  ;)



Posted by: AGelbert
« on: April 06, 2016, 10:27:15 pm »


Watch a dragonfly grow its wings in this wonderful time-lapse video

Melissa Breyer (@MelissaBreyer)

Science / Animals

April 4, 2016

When we see a dragonfly flitting around the garden or pond, the insect world's equivalent of a fairy doing some summertime magic, seldom do we think of how it came to be.

As it turns out, these graceful skimmers spend between one and five years under water in the nymph stage, where they are ferocious predators with, as Wired magazine puts it, incredibly fast weaponized mouthparts. Yikes.  ;D

When they finally emerge to take form as the dragonfly we know and love, they do so with a set of lumps on their backs ... these will become wings. And not just any wings, but the most powerful wings in the insect kingdom.

Thankfully they have a glorious life above water, because it generally only lasts long enough to mature and reproduce, from a few weeks to up to six months.

Smithsonian produced this fascinating video showing not only life under water and those super grabby mouthparts, but also the growth of a dragonfly's wings in time-lapse.

So cool, see it here:
 


http://www.treehugger.com/animals/watch-dragonfly-grow-its-wings-wonderful-time-lapse-video.html
Posted by: AGelbert
« on: February 10, 2016, 09:43:57 pm »

 

Lady Bug Life Cycle
Posted by: AGelbert
« on: November 21, 2015, 04:10:48 pm »

Posted by: AGelbert
« on: October 21, 2015, 01:31:38 am »

Apus apus (Common Swift)

How Much of the Time Is a Common Swift in the Air?  ???

Young common swifts will stay airborne for two to three years  :o, landing only for brief moments to check out possible nesting sites. These birds are able to eat insects caught in mid-air and will drink, sleep and mate while flying.




Common swifts are the only bird that spends this much time on the wing without landing. Even nest building materials are gathered from airborne debris on windy days and are stuck together into a nest with saliva.


The common swift has feet that are ill-adapted to any kind of walking or perching, but can cling to vertical surfaces like cliff faces and the eaves of old houses where they commonly make their nests.

More about swifts:

The common swift lives in Europe and Asia during the summer breeding season and migrates to Central and Southern Africa for the rest of the year.

The common swift can reach diving speeds of up to 135 miles per hour.  :o 
We are called Swifts for a good reason. ;D


In order to stay safely out of reach of predators while sleeping, swifts can drift up to 10,000 feet high during the night. It's likely they sleep in a similar way to dolphins, by shutting down half of their brain at a time to rest.

http://www.wisegeek.com/how-much-of-the-time-is-a-common-swift-in-the-air.htm
Posted by: AGelbert
« on: September 14, 2015, 10:54:31 pm »


Robot designers want to copy the hummingbird
by David Catchpoole

Engineers at Japan’s Chiba University who aim to build miniature flying robots want to copy bird wing flexibility and movement in their designs.1

They chose the hummingbird2 as their ‘wing model’ because its capacity to hover quite still while feeding on nectar means they can be studied more easily than other birds. “And they’re quite small,” explained researcher Masateru Maeda, who used high-speed cameras to capture the way that the hummingbird precisely bends and flexes its wings, adding, “Larger birds that cannot hover have to be studied in wind tunnels.”1

The researchers found that the movement of the primary flight feathers changes the shape and size of the wings to precisely control the lift they generate.

Because hummingbirds can hover quite still while feeding on nectar, you don’t need a wind tunnel to study them.

This research project is but one of many around the world where engineers are seeking to incorporate evident design features in nature into their own designs. Not just in the expanding field of micro air vehicles (MAVs)3,4,5,6,7 but also in a host of terrestrial and aquatic enterprises. E.g. ceiling-walking lizards and insects are inspiring scientists to make detachable super-adhesives, for applications such as window-cleaning robots;8,9 desert creatures are providing the inspiration for improvements to machines that have to traverse sandy terrain;10 fish and even single-celled organisms are inspiring better submarines.11,12

And just as no-one should dispute that the resulting robots and other machines have been intelligently designed, nor should anyone dispute that design in nature wasn’t ‘by chance’ either  (Romans 1:20). For more, see creation.com/biomimetics

http://creation.com/copy-hummingbird


Posted by: AGelbert
« on: August 30, 2015, 08:37:07 pm »



Do Dragonflies Catch Insects on the Ground?   

Dragonflies are efficient predators and can catch a variety of insect prey while on the wing. However, they are unable to hunt without flying, or even to walk at all, so a dragonfly with damaged wings is likely to starve to death.

Dragonflies start life as aquatic larvae, and will live in the water for up to two years before transforming into their adult form. Once they have wings, dragonflies become extraordinary flyers, capable of moving in all directions, of hovering and even of flying backwards. They can reach speeds of up to 35 miles per hour and will predict the movement of prey to intercept it, rather than just chase it down.

More about dragonflies:

•Dragonflies have the most complex eyes of any insect species, with over 30,000 facets, and can see more colors than humans, including ultraviolet light.

•Fossilized dragonflies have been found with wingspans of up to two feet across.

•Dragonflies are particularly good at keeping down mosquito populations.  ;D
A single dragonfly might eat hundreds of mosquitoes in a single day.

http://www.wisegeek.com/do-dragonflies-catch-insects-on-the-ground.htm
Posted by: AGelbert
« on: August 12, 2015, 10:00:02 pm »

The amazing butterflies 

The world of butterflies
Posted by: AGelbert
« on: June 07, 2015, 12:08:19 am »



Quote
One mystery of birds' flight is solved! 

The elegance of birds' flight, their seemingly effortless aerial turns and the softness of their landing, have been envied by many people.

From countless observations, it has been known that the birds use a small group of feathers, called "the alula," a thumb-like structure that is present at the bend of the wing, in slow and steep flight such as landing. Why do they use it? How the tiny feathers can help them land softly?   ???

http://www.sciencedaily.com/releases/2015/06/150605103008.htm
Posted by: AGelbert
« on: April 08, 2015, 10:12:06 pm »

How Long Can Birds Fly without Stopping?  ???

Some migratory birds can fly non-stop for very long distances. Some birds are even able to cross oceans without stopping as they migrate. The record for the longest distance flown by birds without stopping belongs to bar-tailed godwits. These birds can fly 7,000 miles (11,265 km) without stopping to rest or eat.


Champion Migrator Bar-tailed Godwit

Every autumn, the bar-tailed godwits travel non-stop from Alaska to New Zealand. Previously, the record for non-stop bird flights was believed to be about 3,100 miles (5,000 km). The discovery about the distance flown non-stop by bar-tailed godwits broke this record and is an extraordinary example of endurance in birds.

More about migratory birds:

About 40% of all birds in the world migrate.

Migratory birds experience hyperphagia before migration; they eat far more than usual and store fat to last through their journey.

Penguins can't fly, but they do migrate, by swimming.

http://www.wisegeek.com/how-long-can-birds-fly-without-stopping.htm



Perhaps the most astonishing of all bird migrations
is the one recorded in 2007, by the team led by biologist Robert Gill of the USGS Alaska Science Center in Anchorage. Gill used satellite tracking to follow the migration of shorebirds called bar-tailed godwits—and most notably a female godwit simply called "E7".

Bar-tailed godwits are powered migrants—which means that, like blackpoll warblers, they must flap their wings the whole way, without the luxury of soaring or gliding. Not only this, but unlike arctic terns or sooty shearwaters, powered migrants can never stop to feed or rest at sea.

On August 30, E7 took off from the coast of Alaska and without ever stopping to rest or refuel, she landed in New Zealand nine days later.

Bar-tailed godwits time their departure to coincide with favorable weather patterns, so E7 intentionally took advantage of tailwinds.  These helpful winds, combined with her own uninterrupted wing beats, allowed her to travel at an average of 35 miles per hour.

The total distance—7,270 miles flown entirely over the immensity of the open Pacific Ocean. With stored body fat as her only fuel, this shorebird weighing less than a pound made the longest recorded nonstop flight of any bird.
http://www.encountersnorth.org/wildexplorer/birdmigration/champion-migrants.html

Posted by: AGelbert
« on: December 22, 2014, 11:32:19 pm »

Megaphragma is the TINIEST flying life form on Earth!

Megaphragma wasp is the size of a Paramecium:o

This life form is so unusual, it has cells that exclude cell bodies around the nucleus that Eukaryotic (true) cells "normally" have. Scientists think that is so because "there ain't no room for cells with all that stuff in a critter that small". 

But they WON'T say the obvious! That is, that it seems to have been  DESIGNED that way from scratch; the size of a critter is a function of cell anatomy and physiology, not the other way around.  

Are they going to say that millions of years of squeezing in tight places EVOLVED the cell anatomy and physiology so it could EVOLVE a tinier wasp?  That is REALLY reaching! 

That is NOT the way "natural selection" is supposed to work anyway. Supposedly, the "BIG" flies got killed off and the ones with the  tiny cell machinery mutation survived.   I don't think so.

WHY?

It's a chicken or egg problem for the Darwinists. Did this type of cell precede the more common Eukaryotes or did a wasp "mutation(s)" -( it takes a LOT more than ONE mutation to RADICALLY modify cell anatomy and physiology this way!) produce this exquisitely adapted parasite to be almost invisible to the host?

There is simply ZERO reason to be that small. There's lots of room  out there and a plethora of larger prey that won't spot the wasp even if it is 10 times larger.    

Even if Megaphragma is paraded as the only living example of what Eukaryotic cells were like before they EVOLVED into the ones most Eukaryotic life forms have today, then why is it still here?  ;D

If it was SO SUCCESSFUL for over millions and millions of years or so, how come the BASIC cell anatomy and physiology model was changed? HUH? This is proof of DESIGN, not evolution.
 
What we have here is "Moore's God's law of miniaturization of flying equipment" cells. Neurons are super tiny too!

So, are you gonna tell me this wasp Evolved from a NON-flying microscopic whatever/wasp? Hello? Those cells REQUIRE specific design to create that tiny wasp. It will not be able to fly without the microminiaturization of cell function. It would be too heavy and probably 10 times as "large" (no longer microscopic).

It would need a more advanced design for a larger size like the exquisitely designed Drosophila melanogaster (fruit fly) sensory package (some of them not understood yet like eyes separate and apart from the "normal" eyes and a sensor they believe is also related to flight), and two types of wing muscles, ALL SPECIALIZED for FLIGHT, not crawling, walking or swimming.

They are USELESS except SPECIFICALLY for aerial foraging and evasive maneuvers to avoid getting eaten while FLYING. Yes the reflex time is also valuable when they are perched but the sensory package for a ground based insect is much, simpler. When insects cannot MOVE fast because they don't fly, they have other defenses like gas and stink and sprays which are radically different from the rapid response motion detecting sensor package on flying insects. The whole ENCHILADA is more proof of DESIGN:


In summary, there is, apparently, no way an insect as small as Megaphragma could fly without the biologically designed microminiaturization of its Eukaryotic cell anatomy and physiology. It's AMAZING! 



LOOK at how TINY the Megaphragma wasp is. It's just over 200 micrometers ( 200 μm)


If WE could microminiaturize OUR neurons, we could have orders of magnitude more processing ability.

I'm sure somebody in the MIC is "working" on it....



I still can't get past 100 gigaFLOPS. Need more Brain!   


Posted by: AGelbert
« on: December 22, 2014, 08:39:13 pm »

https://www.youtube.com/watch?v=e_44G-kE8lE&feature=player_embedded
Outside of the TOTALLY FALSE assumption by the above scientist that flight is an ability that insects "evolved", it 's a cool video. There is ZERO evidence of transitional flight characteristics in insects, period. There are MO insects with partial wings for millions of years in the fossil record. But still the RELIGION of the Darwin persists.  The amazing thing about the above scientist's cognitive failings id that he describes in DETAIL how incredibly specializes the fly sensors and wing anatomy and physiology are DESIGNED ONLY for flight, not walking, swimming or crawling. Such pretzel reasoning is breathtaking.

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