Category Archives: Engineering

Home Engineering: Windmill for Electricity

photo of windmill

I built my first windmill when I was 15. Over the next few years I kept refining the design. I made many modifications to the plans i found in the book. For example, I increased the blades from three to four to provide more power output. The windmill now powers lights for 3 rooms and a light over our porch outside. I also use it to power my family’s two radios. I also can charge mobile phones that the neighbors have.
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Two weeks ago I used a computer for the first time. I learned about Google and searched for “windmill” and “solar energy.” I was amazed to learn how many entries there were for both subjects. My friends showed me how to create an email address and now I am on Gmail. Now I am practicing sending and receiving emails when I have access to a computer.
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On Sunday, my friends from National Solar and I completed the next phase of work on my electrical system. You can see a compete set of (my first) digital photos at my new site on Flickr. I had the following goals:

1. Upgrade the power generation in the windmill
2. Upgrade the battery technology and capacity, to provide more even power for more hours at a time
3. Increase the brightness of the lighting (lumens) to make it easier for my family to accomplish tasks at night, especially to read…

Photo: Back in November, the windmill was only 5 meters (15 feet) tall compared to 12 meters (36 feet) today. I raised the height because I discovered that the best wind was just over the top of the shorter windmill.

World’s First Commercial-Scale Subsea Turbine

Artist's impression of MCT Seagen pile-mounted twin rotor tidal turbine

Earlier this month, Marine Current Turbines confirmed the installation date for its 1.2MW SeaGen tidal current system in Northern Ireland’s Strangford Lough. SeaGen consists of twin axial flow rotors, each of 16m diameter driving a generator via a gearbox much like a hydro-electric turbine or a wind turbine. The twin power units of each system are mounted on wing-like extensions either side of a tubular steel monopile 3m in diameter which is set into a hole drilled into the seabed.

SeaGen is four times as powerful as the world’s previous most powerful turbine, SeaFlow, which Marine Current Turbines has been operating off Lynmouth in Devon since 2003; SeaGen will form the basis for the commercial projects that will follow. SeaGen, which is being assembled at Harland & Wolff in Belfast, will be connected to the local electricity grid and have the capacity to generate clean and predictable power for approximately 1000 homes.

Martin Wright, Managing Director of Marine Current Turbines said: “The new investment partners and the support of our existing shareholders re-affirm the commercial potential for tidal power in the UK and overseas, and recognise our engineering achievements in developing a world-leading technology. With SeaGen set to be deployed in August, we are moving ahead with our plans for a 10MW tidal farm, to be installed within the next three years.”

Each submerged turbines range from 750 to 1500kW per unit (depending on the local flow pattern and peak velocity). And they expect to deploy 10-20 at a time – more can be added for relatively less marginal cost allowing for incremental investment in new capacity. They expect the turbines to have an excess of a 20 year operating life.

We have also added a new energy category to the blog.

Singapore Research Fellowship

Singapore National Research Foundation Research Fellowship (updated link which was broken – why can’t web site stop breaking links?) offers complete freedom and a 3-year research grant of up to US$1.5million, with possible extension for another 3 years for talented scientists and researchers at or under the age of 35 years at the date of application. This is another example of Singapore investing in creating a scientific and engineering community to strengthen their economy.

Korean Engineering Education

Different Engineering Education Expectations

The “Engineering Education Innovation Center” of the engineering department at Yonsei University surveyed 350 human resources officials at some 100 small- and medium-sized companies, as well as big companies, including Samsung Electronics, LG Electronics, Doosan Heavy Industries and Construction, and Nexon. In the survey, they gave engineering graduates an “F” grade in 13 out of 14 categories. Engineering graduates themselves also said, “Education in college is not useful to our work.”

On the contrary, however, engineering professors gave high marks of 97 out of 100 on their knowledge, and answered positively regarding their teaching skills, which revealed the different views colleges and companies have.

The conflict between what is being taught and what is needed in business is the subject of continuing debate globally.

More Automotive Engineering Jobs

I must say I am a bit skeptical but I am hardly an expert in forecasting automobile engineering jobs so maybe it is a good prediction, Study forecasts 300,000 more automotive engineering jobs worldwide by 2015:

According to a study by the Oliver Wyman consultancy group published in yesterday’s Die Welt newspaper, Car Innovation 2015, nearly 300,000 R&D engineering jobs will be created across the global automotive industry over the next eight years, bringing the total of such jobs to 1.1m, from the 813,000 in 2005.

Most of the new jobs will be with automotive suppliers, to whom assemblers are conferring more and more R&D responsibility, and the jobs will be concentrated in China, India, Eastern Europe and South Korea

Computer Game and Real World Education

Planning ahead: UW game teaches kids, mixes virtual, real worlds

14 middle schoolers have been participating in “Urban Science” and working in a computer lab at Wendt Library on the UW’s engineering campus. They spend their summer mornings immersed for four weeks in a highly sophisticated computer game that takes them deep into a world where the lines between fantasy and reality are deliberately blurry.

The students work for a fictitious firm called Urban Design Associates, are assigned the title of planner, carry business cards and do field research in actual neighborhoods, armed with digital cameras and notebooks, under the guidance of graduate students in the educational psychology department. As part of the game, the grad students are known as planning consultants.

I like the real world and technology interaction for education. I believe getting kids involved with real world problems is a good way to get them interested in learning.

Robotarium X – Robot Zoo

Robotarium X, the worlds first zoo for artificial life, has opened in Alverca, Portugal.

The robots are all original, created specifically for the project, representing 14 species classified by distinct behavior strategies and body morphologies. Obstacle avoidance, movement or sunlight detection and interaction with the public are some of the robots skills.

Robotarium X, the first zoo for artificial life, approaches robots very much in the way as we are used to look at natural life. We, humans, enjoy watching and studying other life forms behavior and, sadly, also to capture them. However, in this case, although the robots are confined to a cage it can be said that, not like animals, they enjoy it. In fact the Robotarium is their ideal environment with plenty of sun, smoothness, tranquility and attention. There are no fights or aggression and the only competition is to assure a place under the sunlight.

Ok, I must admit the “zoo” seems to be a bit small and primitive but imagine what similar, more advanced, exhibits we will likely see in the future. The robots really look like sushi don’t they? via: The World’s First Robot Zoo

Another Humanoid Robot

promet3 - Humanoid Robot

Kawada Industries press release on HRP-3 Promet Mk-II (link to Google translation from Japanese to English). The robot is waterproof and does not need the power backpack most other humanoid robots require. It can work in real environments (small spaces, uneven flooring…) – see links for videos and more photos.

They refer to the pose to the left as the work pose. So I guess the device in its hand is a power tool not an advanced laser weapon – though it does resemble such a weapon when I look (maybe that shows my bias).

robot Watch story (link to the Google translation of Japanese to English) – many photos and links to more info.

Kawada Industries HRP-2″Promet”,G on the previous version (with several videos):

The total robotic system was designed and integrated by Kawada Industries, Inc. together with Humanoid Research Group of National Institute of Advanced Industrial Science and Technology (AIST). Yasukawa Electric Corporation provided the initial concept design for the arms and AIST 3D Vision Research Group and Shimizu Corporation provided the vision system.

HRP-2’s height is 154 cm and mass is 58 kg including batteries. It has 30 degrees of freedom (DOF) including two DOF for its hip. The cantilevered crotch joint allows for walking in a confined area. Its highly compact electrical system packaging allows it to forgo the commonly used “backpack” used on other humanoid robots.

Two Top Google Engineers Move to Benchmark Capital

Here is an example of what I mentioned the other day (in Engineers: Future Prospects): Two top Google engineers leave — to Benchmark Capital:

two of the masterminds behind Google Maps and several other Google products, have joined the firm as “Entrepreneurs in Residence.” This gives them paid positions to hang out at Benchmark’s offices on Silicon Valley’s Sand Hill Road and think through starting a business. They have a specific idea in mind, but are secretive about it, telling VentureBeat only that it’s a “consumer Internet” company.
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There were six Google employees responsible for creating Google Maps. Taylor was the overall project leader, while Norris was responsible for the Web server side of the product.

Using Bacteria to Carry Nanoparticles Into Cells

Bacteria ferry nanoparticles into cells for early diagnosis, treatment

Researchers at Purdue University have shown that common bacteria can deliver a valuable cargo of “smart nanoparticles” into a cell to precisely position sensors, drugs or DNA for the early diagnosis and treatment of various diseases. The approach represents a potential way to overcome hurdles in delivering cargo to the interiors of cells, where they could be used as an alterative technology for gene therapy, said Rashid Bashir, a researcher at Purdue’s Birck Nanotechnology Center.

The researchers attached nanoparticles to the outside of bacteria and linked DNA to the nanoparticles. Then the nanoparticle-laden bacteria transported the DNA to the nuclei of cells, causing the cells to produce a fluorescent protein that glowed green. The same method could be used to deliver drugs, genes or other cargo into cells.

“The released cargo is designed to be transported to different locations in the cells to carry out disease detection and treatment simultaneously,” said Bashir, a professor in the Weldon School of Biomedical Engineering and the School of Electrical and Computer Engineering. “Because the bacteria and nanoparticle material can be selected from many choices, this is a delivery system that can be tailored to the characteristics of the receiving cells. It can deliver diagnostic or therapeutic cargo effectively for a wide range of needs.”

Harmless strains of bacteria could be used as vehicles, harnessing bacteria’s natural ability to penetrate cells and their nuclei, Bashir said. “For gene therapy, a big obstacle has been finding ways to transport the therapeutic DNA molecule through the nuclear membrane and into the nucleus,” he said. “Only when it is in the nucleus can the DNA produce proteins that perform specific functions and correct genetic disease conditions.”
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