Karina's Blog
Tuesday, May 19, 2015
Technology post 5/22
The new Vortex bladeless wind-driven generator prototype produces electricity with very few moving parts, and is almost complete silence. Designed to reduce the visual and aural impact of traditional spinning-blade turbines, this new device takes advantage of the power contained in swirling vortices of air. The Vortex takes advantage of the swirling motion of wind and not direct force. This also means that groups of Vortex units can be huddled closer together as the disruption of air movement in the wind stream is nowhere near as critical as it is when positioning standard, blade-driven wind turbines. It can potentially generate more power per square meter. The first model to be made available commercially will be known as the Mini: a 4 kW, 41 ft high unit intended for residential and small-scale commercial application. A larger model is also being designed and is a unit with a greater than one-megawatt output intended for use in large-scale power generation for industry and electricity companies.
Wednesday, May 13, 2015
Technology Post 5/15
Monday, May 4, 2015
Technology post 5/8
Called the Greased Lightning, or GL-10, the prototype made a successful vertical takeoff and transition to horizontal flight. One of the major challenges for aviation engineers is combining the vertical takeoff and landing and hover capabilities of a helicopter with the speed and range of a fixed-wing aircraft. It does so by rotating their engine nacelles while keeping their wings fixed because it's mechanically simpler and reduces crosswind drag. However, the GL-10 is an unmanned hybrid-electric aircraft that uses 10 electric motors for liftoff and NASA believes that a tilt wing is the better option for handling so many nacelles at once. According to the space agency, the GL-10 can stay 24 hours in horizontal flight and is described as being as quiet as a petrol lawn mower. A much larger version could one day carry one to four passengers. The GL-10 will be exhibited in Atlanta from May 4 to 7, then will go on to be tested.
Monday, April 27, 2015
Technology post 5/1
Construction Finished on Floating Mega-Solar Plants
Construction has been completed on two floating solar power plants located in Kato City, Japan. The Kyocera Corporation and the Century Tokyo Leasing Corporation partnered up to build the instillations. It will provide electricity to an estimated 920 households. The vast floating power plants represent an attractive, and more safe option for electricity generation. The water-located solar cells will generate more electricity than their roof-based counterparts, as they are constantly cooled by the water beneath them. The two facilities are comprised of 11,256 255-watt Kyocera modules and are capable of withstanding typhoon conditions. It is thought that the shade produced by the vast power plants should reduce both algae growth and water evaporation. Another much larger facility planned will boast roughly 50,000 modules and have an output of around 15,635 Mwh per year.
Tuesday, April 21, 2015
Technology post 4/24
World's First Battery-Powered Rocket
In the hopes of increasing the number of satellite launches to over 100 a year, the Rocket Lab company has developed a "battery-powered" rocket engine to lift its Electron launch vehicle. Rocket Lab's idea for making a lighter, simpler liquid rocket is its Rutherford engine. It's an electric turbo-pump engine that burns liquid oxygen and RP-1 rocket fuel. Unlike conventional engines, the Rutherford uses a gas-powered turbine to run the pump is replaced with a brush less DC motor and lithium polymer batteries. The company says that the Rutherford is also notable as the first oxygen/hydrocarbon engine to use 3D printing for all its primary components. Rocket Lab says that when the system is up and running, the Electron booster will be able to lift a payload into orbit using less fuel than a 737 flying from New York to Los Angeles, and will cost US$4.9 million per launch.
Wednesday, April 1, 2015
Technology Post 4/2
Berlin-based startup Soundbrenner introduced the Pulse wearable metronome, which keeps the beat by vibration or light and can be programmed for multiple players. The Soundbrenner Pulse can be programmed with a smatphone app. The Soundbrenner Pulse app allows the user to customize beat settings. Looking like an oversized smartwatch, the Pulse is designed to be worn on the arm or leg by a single musician. Multiple units can also be synced for groups of up to 10 people. At its heart is a vibrator that provides feedback with an eccentric rotating mass (ERM) motor that is said to be six times more powerful than the vibrators found in conventional smartphones and smartwatches. According to co-founder and CEO of Soundbrenner, Florian Simmendinger, setting the Pulse up is very simple. Using the Beats Per Minute (BPM) tap feature, the musician just taps out the tempo on the face of the pulse, and the capacitive touch sensor combined with a proprietary algorithm reproduces it as vibrations or a flashing LED with customizable colors. For finer control, the bezel of the device can alter the beat setting, and for the very control minded, there's the Soundbrenner smartphone app, which links to the Pulse via Bluetooth. In addition, it can store setlists, customize beats, synchronize up to 10 Pulse units, and act as a Smart Coach for practice and motivation. The company says it will be available both iOS and Android phones upon release. The battery will approximately last 4-5 hours. The Soundbrenner Pulse is currently the focus of an Indiegogo campaign running through April, with an early adopter price of US$129 and a retail price of US$149. If all goes according to plan, it's expected to ship in November.
The video below introduces the Soundbrenner Pulse.
Wednesday, March 25, 2015
Technology post 3/27
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