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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

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 Selects Missions to Study Sun, its Effects on Space Weather

One of the selected missions will study how the Sun drives particles and energy into the solar system

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NASA, Missions, Sun
The launch date for the two missions is no later than August 2022, the US space agency said in a statement on Friday. Pixabay

NASA has selected two new missions to study the Sun and its dynamic effects on space weather.

The launch date for the two missions is no later than August 2022, the US space agency said in a statement on Friday.

One of the selected missions will study how the Sun drives particles and energy into the solar system and a second will study the Earth’s response.

“These missions will do big science, but they’re also special because they come in small packages, which means that we can launch them together and get more research for the price of a single launch,” said Thomas Zurbuchen, Associate Administrator for the Science Mission Directorate at NASA headquarters in Washington.

NASA, Missions, Sun
NASA has selected two new missions to study the Sun and its dynamic effects on space weather. Pixabay

The Sun generates a vast outpouring of solar particles known as the solar wind, which can create a dynamic system of radiation in space called space weather.

Near Earth, where such particles interact with our planet’s magnetic field, the space weather system can lead to profound impact on human interests, such as astronauts’ safety, radio communications, GPS signals and utility grids on the ground.

The more we understand what drives space weather and its interaction with the Earth and lunar systems, the more we can mitigate its effects – including safeguarding astronauts and technology crucial to NASA’s Artemis programme to the Moon.

One of the two missions that NASA has selected is the Polarimeter to Unify the Corona and Heliosphere, or PUNCH. This mission will focus directly on the Sun’s outer atmosphere, the corona, and how it generates the solar wind.

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The second mission is Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites, or TRACERS. The TRACERS investigation was partially selected as a NASA-launched rideshare mission, meaning it will be launched as a secondary payload with PUNCH.

TRACERS will observe particles and fields at the Earth’s northern magnetic cusp region – the region encircling the Earth’s pole, where our planet’s magnetic field lines curve down towards the Earth, NASA said. (IANS)