Micro honeycomb materials enable new physics in aircraft sound reduction

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Georgia Tech Research Institute research engineer Jason Nadler has developed a new microchanneled material that reduces aircraft engine noise by wearing it down through a process called viscous shear. Georgia Tech Photo: Gary Meek
Georgia Tech Research Institute research engineer Jason Nadler has developed a new microchanneled material that reduces aircraft engine noise by wearing it down through a process called viscous shear. Georgia Tech Photo: Gary Meek

Noise from commercial and military jet aircraft causes environmental problems for communities near airports, obliging airplanes to follow often complex noise-abatement procedures on takeoff and landing. It can also make aircraft interiors excessively loud.


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All News summaries for September 29, 2008

Breakthrough Made in Metamaterial Optics

Dec 03, 2008 | User rating: not rated yet
(PhysOrg.com) -- Researchers have solved one of the significant remaining challenges with photonic “metamaterials,” discovering a way to prevent the loss of light as it passes through these materials, and opening the door ...

New insights on fusion power

Dec 03, 2008 | User rating: not rated yet
(PhysOrg.com) -- Research carried out at MIT’s Alcator C-Mod fusion reactor may have brought the promise of fusion as a future power source a bit closer to reality, though scientists caution that a practical ...

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Dec 02, 2008 | User rating: not rated yet
(PhysOrg.com) -- Scientists have found that a polymer material is an excellent catalyst in a process to produce hydrogen fuel using sunlight and water. The material meets the basic requirements for an ideal catalyst -- including ...

Avalanches -- triggered from the valley

Dec 02, 2008 | User rating: not rated yet
Everybody knows that skiers swishing down steep slopes can cause extensive slab avalanches. But there is a less well known phenomenon: A person skiing a gentle slope in the valley triggers a slab avalanche ...

Ship-in-a-bottle kit on a microchip

Dec 02, 2008 | User rating: not rated yet
(PhysOrg.com) -- Sometimes physicists resort to tried and trusted model-making tricks. Scientists at the Max Planck Institute for Metals Research, the University of Stuttgart and the Colorado School of Mines ...