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Researchers Create Acoustic 'Image' of Thunder

Southwest Research Institute (SwRI) researchers have imaged the first acoustic signature of thunder, visually capturing the sound waves created by artificially triggered lightning.While the general mechanics of thunder generation are understood, it is not particularly clear which physical processes of the lightning discharge contribute to the thunder we hear. By studying the acoustic power radiated from different portions of the lightning channel, researchers can learn more about the origins of thunder as well as the energetic processes associated with lightning.  Dr. Maher A. Dayeh, a research scientist in the SwRI Space Science and Engineering Division, designed a large, sophisticated array of microphones to study the acoustic signature of thunder. Fifteen microphones, spaced one meter apart, were lined up 95 meters away from the rocket launch pad where the triggered lightning would strike. To image the vertical profile of the bolt, Dayeh used post-signal processing techniques and directional amplification of the data signals captured by the microphone array. The technique revealed a distinct signature of thunder generated by the lightning strike. Future experiments could allow scientists to study the probable acoustic signatures of current pulses, step leader branches, and discharge channel zigzags independently.SourceLearn about an Accelerometer Sensors Network for Acoustic Diagnostics (MASNAD).

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Will "smart city" lighting efforts pay off?

This week's Question: At this year's Mobile World Congress in Spain, Sierra Wireless and Philips CityTouch demonstrated "smart city" lighting capabilities. The companies' systems connect a city's individual street lights to the Internet via 2G, 3G, and 4G networks. The "smart" technology allows authorities to create customized lighting patterns and adjust the lamps for specific weather conditions or neighborhood needs. With "smart city" designs, users will potentially gain a clearer picture of a city’s lighting infrastructure, access real-time data on energy consumption, and receive automatic failure notifications, ultimately reducing costs in both energy and maintenance. To achieve this type of connected city, however, a common set of standards must enable interoperability so that every application can communicate and share data. Security levels, too, must be maintained. What do you think? Will "smart city" lighting efforts pay off?

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From Tires to Interiors, Bentley Designs with 3D Printing

When your very name conjures up visions of luxury, quality, and detail, your design studio has to employ the very best minds working with the very best technology. Founded from modest beginnings in England in 1919, Bentley Motors Ltd. is dedicated to making responsive and powerful Grand Tourer automobiles with the stamina to cross continents at speed, in refined comfort and style. Little surprise then, that Bentley should equip its design studio with Objet30 Pro desktop and Objet500 Connex multi-material 3D printers.

Posted in: White Papers

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Revolutionizing Manufacturing With 3D Printing

With traditional manufacturing methods, it's not practical to manufacture a single item or short run of products — it's simply too expensive, in terms of both time and money. Securing factory space, setting up a production line, and procuring jigs and fixtures all incur substantial costs that can't be justified for a few items.

Posted in: White Papers

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Utilizing Commercial Best Practices for Success in NewSpace

Keysight Technologies is excited to support the advancement of NewSpace, that disruptive force in the space industry that is driving completely new business models and is rapidly evolving with the proliferation of small satellites, new applications, services and infrastructure. Keysight has been the leading provider of electronic test and measurement solutions to the space industry for over 75 years. We are committed to providing the critical information, products and services that ensure your technical and business success.

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Orion Testing Provides Data for Splashdown Recovery Operations

The first full joint testing between NASA and the U.S. Navy of the Orion spacecraft recovery procedures off the coast of California was suspended after the team experienced issues with handling lines securing a test version of Orion inside the well deck of the USS San Diego. Tests were being conducted to prepare for recovery of Orion after it splashes down in the Pacific Ocean at the end of its first spaceflight.

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Researchers Test Smartphones for Earthquake Warning

Smartphones and other personal electronic devices could, in regions where they are in widespread use, function as early warning systems for large earthquakes. This technology could serve regions of the world that cannot afford higher quality, but more expensive, conventional earthquake early warning systems.

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