Wed, Mar 29, 2017 | updated 08:45 AM IST

Flying insects don't obey aerodynamic laws of airplanes: Study

Updated: Jul 12, 2016 15:16 IST

Washington D.C., July 12 (ANI): New York University researchers have found that the movement of flying insects are unmatched even by the best pilots due to the fact that these critters defy aerodynamic laws of airplanes.

Leif Ristroph, an assistant professor at NYU's Courant Institute of Mathematical Sciences, said "We've known for quite a while that the aerodynamic theory for airplanes doesn't work so well in predicting the force of lift for flapping wings. We found that the drag or wind resistance also behaves very differently and we put together a new law that could help explain how insects move through the air."

"To double its flight speed, an airplane must increase its thrust four-fold to counter the stronger wind resistance," Ristroph explains in outlining the law. "I

He added in contrast they found that flapping wings have a drag that is in direct proportion to its flight speed, to go twice as fast, an insect simply needs to double its thrust."

Reserchers found that the significance of aerodynamic drag and its strong increase with speed has been known since before the Wright brothers took flight.

After conducting experiment, researchers showed that the back-and-forth motions cause the drag to resist the movement in some instances; however, at other times the drag is actually directed forward, more like a thrust.

This law may not be new to insects, which have been flying with flapping wings for hundreds of millions of years. But the authors think that their findings could help guide the design of tiny flying robots that mimic the wing motions of insects.

The study is published in Physical Review Fluids journal. (ANI)

Ranchi [India], Mar. 28 (ANI): Health Minister of Jharkhand, Ramchandra Chandravanshi has recently claimed that the state has come a long way from the day when Jharkhand was on 18th number among states as far as their healthcare services were concerned. It now stands third in the country, according to an independent survey.

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Washington D.C. [USA], Mar. 28 (ANI): Exposure to fungal product, called aflatoxin, is believed to cause up to 80 percent of liver cancer cases in many parts of the world.

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Washington D.C. [USA], Mar. 26 (ANI): Attention dog lovers! With just six months of training, a German Shepherd can accurately detect breast cancer, a study finds.

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Washington D.C. [USA], Mar. 26 (ANI): A recent study has found that a sleepless night impairs your ability to interpret subtle expressions of happiness and sadness.

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Washington D.C. [USA], Mar. 26 (ANI): When it comes to new moms' workout programs, less is more and so, according to a Kansas State University researcher, new moms may need a bit more flexibility and support to ease back into exercise after giving birth.

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New approach to diagnosing mental disorders

Updated: Mar 26, 2017 10:48 IST

Washington D.C. [USA], Mar. 26 (ANI): A consortium of psychiatrists and psychologists has proposed a new approach to diagnosing mental disorders.

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Washington D.C. [USA], Mar. 26 (ANI): Boosting natural brain opioids may be a better way to treat anxiety, according to a recent study.

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Fecal transplant offers hope for autistic kids

Updated: Mar 26, 2017 09:37 IST

Washington D.C. [USA], Mar. 26 (ANI): In this new era of medical therapy dawning, fecal transplants are poised to help fight a range of conditions, from deadly superbugs to obesity and now, autism is in the firing line.

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Thiruvallur (Chennai) [India], Mar. 25 (ANI): A highly contagious viral disease of cattle and swine, Foot-and-Mouth Disease (FMD) has affected Karani village on the outskirts of Tamil Nadu's Tiruvallur district.

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New Delhi [India], Mar. 25 (ANI): The findings of the National Family Health Survey 2015-16 confirm what we all knew from clinical evidence - that hypertension has become a major health concern among the Indian population, with as many as 22% Indians hypertensive.

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Washington D.C. [USA], Mar. 25 (ANI): A prescription weight-loss medication can decrease the urge to use opiates such as oxycodone, according to a recent study.

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Washington D.C. [USA], Mar. 25 (ANI): A team of researchers has discovered a new gene that is associated with Tau accumulation, which is one of the defining features of Alzheimer disease (AD).

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Washington D.C. [USA], Mar. 25 (ANI): All it takes is the flip of a protein "switch" within the tiny wire-like capillaries of the brain to increase the blood flow that ensures optimal brain function.

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Washington D.C. [USA], Mar. 25 (ANI): Scientists have found that stem cell therapy repairs damaged lungs - raising hopes of a cure for the crippling chronic obstructive pulmonary disease (COPD) and cystic fibrosis.

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New method can cut dental implant failure

Updated: Mar 25, 2017 09:34 IST

Washington D.C. [USA], Mar. 25 (ANI): A team of researchers has come up with a new method to reduce dental implant failure.

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Washington D.C. [USA], Mar. 25 (ANI): A team of researchers has come up with a fluorogenic probe that can detect the activity of multidrug-resistant pathogens in an assay system.

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Virus hydrophobicity can help purify vaccines

Updated: Mar 25, 2017 07:46 IST

Washington D.C. [USA], Mar. 25 (ANI): A team of researchers has found that hydrophobic proteins on virus surfaces can help purify vaccines.

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Washington D.C. [USA], Mar. 25 (ANI): A team of researchers has shed light on why survivors of childhood brain tumours may be prone to heart disease, stroke, type 2 diabetes and early death.

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New Delhi [India], Mar. 24 (ANI): Continuing its efforts to raise awareness on tuberculosis and its diagnosis, Division of Clinical Microbiology & Molecular Medicine Department of Laboratory Medicine, AIIMS, and BD (Becton Dickinson India) for the third consecutive year organized a symposium today on "challenges in diagnosis and eradication of tuberculosis".

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New Delhi [India], Mar. 24 (ANI): On the solemn occasion of World Tuberculosis (TB) Day, Members of Parliament, policymakers, TB patients, survivors, and citizens of the civil society gathered at India Gate on Thursday, March 23 to pay tribute to the nearly five lakh lives lost due to this disease last year.

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