Category Archives: Engineering

Mars Rovers Getting Ready for Another Adventure

Mars Rover

Mars rovers begin to stir as dust storms recede

NASA’s twin Mars rovers Spirit and Opportunity are starting to move again after being immobilised for six weeks by severe dust storms. The storms hit in late June, just as Opportunity was poised to enter the 800-metre-wide Victoria crater, which may contain crucial geological records of past conditions on Mars.

Lofting dust high in the atmosphere, the storms blocked precious sunlight needed for the rover solar panels to generate power. Both rovers had to stop driving, and Opportunity was so starved of power that its handlers worried it might freeze to death during the cold Martian night. Now, the storms have finally receded and both rovers are about to start driving towards much-anticipated targets.
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Opportunity is getting about 300 watt-hours of energy per day, more than twice the level it was getting during the worst part of the storms. But it is still not enough to start the descent into the crater, Arvidson says: “We want to make sure if we have some mobility problems that there’s energy to spare to get out of the problem areas.”

These rovers just keep going. From a NASA press release last October: “NASA’s long-lived Mars Exploration Rover Spirit will finish its 1,000th Martian day Thursday, continuing a successful mission originally planned for 90 Martian days.”

Image credit: NASA/JPL Artist’s concept of the Mars Exploration Rover on Mars.High Resolution Image

JMU Adds School of Engineering

JMU to create engineering program next fall by Kelly Conniff:

The research group focused on material from several areas that had shown that engineering is in great demand at JMU. The commonwealth of Virginia has also identified the top three labor shortages areas as nursing, education and engineering. JMU decided to respond to this need by creating a program that will produce close to 50 graduates per year, starting with the first graduating class in 2012.
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The school of engineering will also focus on incorporating business elements into the curriculum. The Steering Committee created two new business courses designed for engineering students. The courses, called Management of Technology I and II, will be specially constructed in order to allow students to pursue post-graduate studies in business or engineering upon graduation.

“The addition of business skills is really important to our program,” Prins said. “Having our graduates be able to speak both engineering and business is key to their success.”

First Year of Google WiFi

First year of Google WiFi

Our Mountain View WiFi network just celebrated its first anniversary, and we thought you’d appreciate a few data points. The network’s 400+ mesh routers cover about 12 square miles and 25,000 homes to serve approximately 15,000 unique users each week month. Since the beginning of 2007, traffic has grown almost 10 percent each month, and the network now handles over 300 gigabytes of data each day, sent to over 100 distinct types of WiFi devices. Virtually the entire city has been taking advantage of the network, with 95 percent of the mesh routers being used on any given day.

Around the globe and across the U. S., many people are still not able to access the online services that are increasingly helpful, if not essential, tools for our daily lives. This is why we’re committed to promoting alternative platforms for people to access the web, no matter where you are, what you’re doing or what device you’re using.

Financial Engineering

In addition to this blog I also run the Curious Cat Investing and Economics blog. Still I don’t really understand what financial engineering is. Here is an article from the author of an excellent economics blog – Reverse engineering financial engineering:

Call it the downside of complex financial engineering. That engineering took some risks off the banks balance sheet (literally in some cases), but it also means that no one quite knows where the subprime losses are. And there is a suspicion that some of those losses are hiding in funds that haven’t offered adequate compensation for the risk.

A few months ago a lot of subprime debt could be packaged into a security that was worth more than the sum of its parts (with a bit of help from the credit rating agencies. And this process was widely lauded. The IMF argued that the United States unique skill at creating innovative fixed income “product” was pulling in the capital needed to finance the US current account deficit. The Fed argued that financial innovation allowed the banks to sell risks that they previously might have held on their balance sheet — though it is also worth noting that the banks themselves were big buyers of MBS as well. Risks were divided and then sold to those best able to manage them.

I understand there has been a large move toward using highly complex math for financial strategies. I understand many derivatives and other investment vehicles have been created. I just don’t really get what makes some of it engineering. Creating new financial instruments, I can come close to understand the argument for calling that engineering but still… And I don’t understand why complex accounting often seems to be called engineering instead of accounting. And the portion that is mainly about changing legal classification then isn’t it more legal than engineering (it seems much financial engineering are gimmicks or tricks or… to gain favorable legal classification for tax… purposes).

Lunar Landers X-Prize

Crash destroys rocket ahead of X Prize contest

The front-runner for a $2 million NASA competition to build mock lunar landers has lost one of its two main vehicles in a fiery crash. The company, Armadillo Aerospace, says it will enter a smaller vehicle instead, but outsiders say the upset will level the playing field and add suspense to the upcoming contest.
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The challenge has two ‘levels’ that involve a vehicle lifting off at one launch pad and hovering – for either 90 or 180 seconds, depending on the level – at an altitude of 50 metres as it moves to a second launch pad 100 metres away. Then the vehicle must do the same thing in reverse. If more than one vehicle achieves this, then the vehicle that can repeat it the greatest number of times in a given time period of time will win.
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He notes that the front-runner for the first solo, non-stop transatlantic flight of an aircraft in 1927 was not Charles Lindbergh but Richard Byrd, “until he crashed on take-off, and just like that, was out of the race.” That left Lindbergh to win the $25,000 prize for the flight.

The X prize contests continue to be an interesting method of encouraging research and development. Previous posts: $10 Million for Science Solutions – Autonomous Vehicle Technology Competition – Lunar Lander X-prize site

Vertical Rotation Personal Windmill

New wind turbine spins success for winning student

Ben Storan, a student graduating with an MA in Industrial Design Engineering from the Royal College of Art (RCA), has been working for the past year in conjunction with Imperial College to design an affordable personal wind turbine suited to the urban environment.

The result is a unique design which uses vertical, rather than traditional horizontal, rotation. This feature gives a slower rotational speed, which allows the turbine to capture more energy from turbulent air flow, common to urban environments. It also means quieter operation. As a result, it is able to generate more energy than domestic models currently on the market. Similarly sized existing personal wind turbines claim to generate 1kW at a wind speed of 12 m/s, but typically produce just 40% of what is claimed. Ben’s design should realistically produce 3 times that (1.2kW) of those currently on the market.

Mining the Moon

Mining the Moon by Mark Williams:

At the 21st century’s start, few would have predicted that by 2007, a second race for the moon would be under way. Yet the signs are that this is now the case. Furthermore, in today’s moon race, unlike the one that took place between the United States and the U.S.S.R. in the 1960s, a full roster of 21st-century global powers, including China and India, are competing.

Even more surprising is that one reason for much of the interest appears to be plans to mine helium-3–purportedly an ideal fuel for fusion reactors but almost unavailable on Earth–from the moon’s surface
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But a serious critic has charged that in reality, He3-based fusion isn’t even a feasible option. In the August issue of Physics World, theoretical physicist Frank Close, at Oxford in the UK, has published an article called “Fears Over Factoids” in which, among other things, he summarizes some claims of the “helium aficionados,” then dismisses those claims as essentially fantasy.

As I stated in January in Helium-3 Fusion Reactor: “This sounds pretty incredible to me and I find the claims of using fuel from the Moon economically to power our needs on Earth. Still it is interesting and just because it sounds fantastic does not mean it can’t be true. But I am skeptical.”

Textbook Revolution

Textbook Revolution is a resource on free textbooks and free related course materials. In general, I must say the prices of textbooks seem crazy. This is another tool great open access resource.

At Textbook Revolution, you’ll find links to textbooks and select educational resources of all kinds. Some of the books are PDF files, others are viewable only online as e-books. Most books are aimed at undergraduates, but there are at least a few resources at every level, from kindergarten to post-doc. All of the books are offered for free by their respective copyright holders for online viewing. Beyond that, each book is as individual as the author behind it.

Some examples: The Scientist and Engineer’s Guide to Digital Signal Processing by Steven W. Smith; Light and Matter by Benjamin Crowell; A First Course in Linear Algebra by Robert A Beeze; Programming Ruby: The Pragmatic Programmer’s Guide by
Dave Thomas and Introduction to Statistical Thought by Michael Lavine.

While on the subject of textbooks, I will plug my father’s book: Statistics for Experimenters – it is my blog so I get to do what I want 🙂

Brain Drain Benefits to the USA Less Than They Could Be

Study Points to ‘Brain-Drain’ of Skilled U.S. Immigrant Entrepreneurs to Home Countries. I am not totally sure reverse brain drain is the proper term. It appears to me this is really saying the size of the brain drain, coming to the USA, is less than it could be (many brains that came are returning). Yes in some senses it is a brain drain from the USA but still…

In this study, “Intellectual Property, the Immigration Backlog, and a Reverse Brain-Drain,” researchers offer a more refined measure of this rise in contributions of foreign nationals to U.S. intellectual property and analyze the possible impact of the immigrant-visa backlog for skilled workers. The key finding from this research is that the number of skilled workers waiting for visas is significantly larger than the number that can be admitted to the United States. This imbalance creates the potential for a sizeable reverse brain-drain from the U.S. to the skilled workers’ home countries.

“These findings are important, highlighting the invaluable contribution of foreign nationals to our country’s technological and economic vitality,” said Duke Provost Peter Lange, the university’s top academic officer. “We know from our own experience here that students from China, India and other nations can play an outstanding role in advancing knowledge and creating new jobs, especially in cutting-edge fields.”

I don’t think this result is going to decrease. And I believe the actual loss of scientists, engineers and entrepreneurs born in the USA for significant portions of their careers to other countries will increase dramatically over the next 25 years. I agree that it is in the interests of the USA to try and retain the ‘Brain Drain’ advantages it has been receiving.

More on Amazing Aerogel

We added a post on aerogel earlier this month. Here is another article on the incredible substance – Scientists hail ‘frozen smoke’ as material that will change world:

It is expected to rank alongside wonder products from previous generations such as Bakelite in the 1930s, carbon fibre in the 1980s and silicone in the 1990s. Mercouri Kanatzidis, a chemistry professor at Northwestern University in Evanston, Illinois, said: “It is an amazing material. It has the lowest density of any product known to man, yet at the same time it can do so much. I can see aerogel being used for everything from filtering polluted water to insulating against extreme temperatures and even for jewellery.”
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It also has green credentials. Aerogel is described by scientists as the “ultimate sponge”, with millions of tiny pores on its surface making it ideal for absorbing pollutants in water. Kanatzidis has created a new version of aerogel designed to mop up lead and mercury from water. Other versions are designed to absorb oil spills.