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NASA Builds Ultra-light Wing that actively changes Shape to help Reduce Fuel Use

The wing also features actuators and computers that make it morph and twist to achieve the desired wing shape during flight

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NASA Aircraft. Flickr
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Washington, November 4, 2016: A team of NASA researchers and students is using emerging composite material manufacturing methods to build an ultra-light wing that actively changes shape to help reduce fuel use and improve flight efficiency.

Increased efficiency means less fuel is needed, which means less weight on the aircraft, which also increases efficiency.

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This “holy grail” of more efficient flight is always in the minds of the Mission Adaptive Digital Composite Aerostructure Technologies, or MADCAT, team at NASA’s Ames Research Center in California’s Silicon Valley, NASA said in a statement on Thursday.

The ultra-light wing that actively changes shape could be an important part of the future of green aviation, said Kenneth Cheung, co-lead on the MADCAT project.

This type of wing could improve aerodynamic efficiency in future flight vehicles by reducing the amount of drag caused by rigid control surfaces like flaps, rudders and ailerons.

Earlier studies of aerodynamics showed that the shape of a wing has enormous effects on flight — but there is not just one “best” wing shape.

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The best shape in any moment depends on many factors: how much the aircraft weighs, the speed it is flying, and whether the pilot wants to climb higher or descend, for instance.

This means that a rigid wing with a limited number of moveable surfaces — also rigid — is only a compromise and cannot be the most efficient shape for the whole of any given flight.

The researchers explained that the shape-changing wing is constructed from building block units made of advanced carbon fibre composite materials.

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These building blocks are assembled into a lattice, or arrangement of repeating structures — the way that they are arranged determines how they flex.

The wing also features actuators and computers that make it morph and twist to achieve the desired wing shape during flight, the researchers said. (IANS)

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NASA’s Kepler Discovers Nearly 100 New Exoplanets

NASA researchers found that some of the signals were caused by multiple star systems or noise from the spacecraft

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UFO religion as a concept is now becoming a part of popular understanding.
Countless galaxies exist in the universe, each hiding secrets that humankind is yet to unearth. Pixabay
  • NASA’s Kepler has discovered nearly 100 new exoplanets
  • Some of the planets discovered are as large as Jupiter
  • NASA has also found planet which orbits very bright stars

An international team of scientists have confirmed the discovery of nearly 100 new exoplanets — planets located outside our solar system.

The discovery was based on data from the second mission of NASA’s Kepler Space Telescope or K2 released in 2014.

NASA has discovered nearly 100 exoplanets. Wikimedia Commons
NASA has discovered nearly 100 exoplanets. Wikimedia Commons

K2 searches for exoplanet transits by registering dips in light caused by the shadow of an exoplanet as it crosses in front of its host star.

NASA researchers found that some of the signals were caused by multiple star systems or noise from the spacecraft.

But they also detected planets that range from sub-Earth-sized to the size of Jupiter and larger.

Also Read: Milky Way’s neighbouring galaxy is of the same size, not bigger

One of the planets detected was orbiting a very bright star.

“We validated a planet on a 10-day orbit around a star called HD 212657, which is now the brightest star found by K2 missions to host a validated planet,” said lead author Andrew Mayo, a doctoral student at the National Space Institute (DTU Space) at the Technical University of Denmark.

Some of the planets found are as big as Jupiter. VOA
Some of the planets found are as big as Jupiter. VOA

For the study, appearing in the Astronomical Journal, the team started out analyzing 275 candidates of which 149 were validated as real exoplanets.

In turn 95 of these planets have proved to be new discoveries, Mayo said.

The Kepler spacecraft was first launched in 2009 to hunt for exoplanets in a single patch of sky, but in 2013 a mechanical failure crippled the telescope.

NASA has found many planets before as well. Wikimedia Commons
NASA has found many planets before as well. Wikimedia Commons

However, astronomers and engineers devised a way to repurpose and save the space telescope by changing its field of view periodically. This solution paved the way for the follow up K2 mission.

Adding the newly discovered exoplanets brings the total number of exoplanets by K2 mission to almost 300, the study said.

Also Read: NASA sounding rocket probing dark regions of space falter

The first planet orbiting a star similar to our own Sun was detected only in 1995. Today some 3,600 exoplanets have been found, ranging from rocky Earth-sized planets to large gas giants like Jupiter. IANS