Skip to Content

Machine Design Blogs

Commentary, opinions, and kibitzing by editors of Machine Design Magazine on developments in the news that relate to engineers.

Archive for August, 2009

roller-mill1.gif

Digital-prototyping software makes the old new again

I just returned from a very stress-free business trip (an oxymoron!) to A.T. Ferrell Co. Inc. in Bluffton, Ind. There was only three of us in the small commuter jet traveling to the Ft. Wayne airport, which was small, clean, and friendly. Bluffton is a pretty farming town with well-tended streets and seemingly endless two-lane highways that intersect miles and miles of cornfields.


A.T Ferrell Co. Inc. is an old-time factory that says it has reinvented itself using digital-prototyping software from Autodesk Inc., San Rafael, Calif. In business for over 140 years, the company designs and builds machinery to sift, grind, blend, dehull, steam, crumble, flake, and convey grains, seeds, and spices for customers ranging from local family farms to large cereal manufacturers and, recently, biodiesel firms.


The company uses tools including Inventor for 3D design, Vault Workgroup for data management, and Showcase for turning 3D models into realistic, poster-size (or even larger) images. A really neat feature of Inventor 2010: It has a programming interface that lets engineers interact with design files via custom applications they write in Visual Basic or Visual Basic.NET, says Allen Gager, A.T. Ferrell design engineer.


For example, important parameters of the roll feeders are the roller width and diameter. Previously, engineers had to open all the part files to change parameters. Gager says he Googled for VB code that generates equations to drive such changes. Other code he found on Google and implemented in an application to talk to Inventor goes into Vault and tells it to print batches of files without him having to manually open each one.

Forget what you learned in thermodynamics: Entropy can decrease

Pity the poor thermodynamics student of the future. As difficult as thermo can be for budding engineers to learn, it is going to get a lot more complicated if a recently published theory is true. Theoretical physicist Lorenzo Maccone recently proposed that entropy can, in fact, decrease under special circumstances. Here is part of the explanation:


“The key to entropy decrease in the first place is a correlation between the observer and the phenomenon in question. As Maccone explains, when an interaction occurs between an observer and an observed phenomenon that decreases the entropy of the correlated observer-observed system, the interaction must also reduce their quantum mutual information. When this information is destroyed, the observer’s memory is destroyed along with it. ”


Well, that certainly clears things up.


You can wade through more of this explanation here:


http://www.physorg.com/news170586562.html


One thing to keep in mind through all this is that the concept of entropy was introduced by mathematician who was trying to express the second law of thermodynamics in an equation. He introduced the idea of entropy simply to get the equation to work out.

xp concept

One less innovative electric vehicle to worry about

Occasionally my inbox has some interesting contents. Today, for example, I found the following release:


XP Vehicles Extremely Disappointed in DOE Rejection of ATVM Application


(San Francisco, CA) – XP Vehicles, Inc., a California-based electric car company, was notified by the U.S. Department of Energy that their Advanced Technology Vehicles Manufacturing (ATVM) loan program application had been rejected.


This is extremely frustrating as we submitted this application almost ten months ago and not once did DOE ask any of our engineers, the founder or our project leads for additional or clarifying information.

While other car companies and suppliers were going out of business left and right, XP managed to survive without outside funding for 10 months longer than it was told it would need to. The original Section 136 funds were set to be released last December for GM, Chrysler and Ford. XP covered its costs without outside support even though GM and Chrysler were removed from the program because “they were not financially viable” according to the DOE.


What is even more frustrating is that one of the main reasons they gave us for the rejection was the fact that our vehicles do not use E85 gasoline and that we are not making millions of cars. While it is true that XP does not wish to use carcinogenic gasoline, XP is fully willing to produce millions of vehicles if provided with the appropriate funding as it has quantified millions of buyers for its vehicles. Additionally XP was told that it was not planing to sell enough cars to the government which is 100% false as the core sales plan of the company is based on government and commercial fleet sales. Additionally XP was told that electric motors and batteries were considered by the reviewers to be too futuristic of a technology and not developed for commercial use even though they have been in use in over 40 industries for over 20 years. Almost every other part of the XP car was to be purchased from existing commercial sources with multiple points of supply, so it is not possible to see how a reviewer might think the vehicle had any significant technical acquisition hurdles.


The primary purpose of this loan program, XP was told by its authors, was to develop advanced technology and further reduce our dependence on gasoline. The XP Vehicles car uses no gasoline and gets over 125 miles per battery charge.


XP was also told that it’s factory cost was too low because the metal body fabrication systems were not calculated high enough but the reviwers apparently did not even pay attention to the fact that XP uses no metal fabrication in it’s body.


It is well known that a DOE funding cannot be surpassed in terms by any current bank or investor in this economy. That is why XP Vehicles and several other advanced technology electric car companies were the first to apply for these loans which the major car companies were not able to do. However, the rules were changed midway through the process to allow these late entrants. Now XP Vehicles has learned that almost all the federal money is going to “Detroit” companies or companies closely aligned with Detroit.


While XP has absolutely no problem with funding going to our traditional automotive industry, XP cannot believe that no funding will be given to small, advanced technology companies trying to move us even further from our dependence on oil. After all, isn’t that what President Obama intended with his energy independence program and support for high technology companies?


XP Vehicles has asked its many thousands of supporters and interested stakeholders to contact their legislators to ask for your some help with DOE. “While we have no idea whether the Department will respond to congressional inquiries, we just have no other options left in obtaining some financial help from the federal government,” stated Janet Kopenhaver, Washington Lobbyist for XP Vehicles. “We had put a grassroots letter-writing campaign off because we were getting assurances from DOE that everything was in order with our application, but circumstances now leave us no choice but to move ahead,” added Kopenhaver. XP has requested Freedom of Information Act disclosure of the application dates of the other applicants, review and opportunity to refute the rejection points based on no interaction with the company engineers or project leads and FOIA disclosure of the other application merits, all of which have so far been denied by the DOE review group.

Quit crying about manufacturing’s demise

In response to Ailing factory towns face tougher road to recovery, Kitt S writes on Yahoo Buzz:


“One question. Where was/is the union in all this, the union is one reason why companies keep moving, when will the laborers ever learn??


Second, I tried to open a factories / warehouse / distribution center , employing a few hundred and in the mid/long term plan a few thousand workers, paying entree level pay of 17.50 an hr plus generous benefits, and though we have won awards for our product and have much international interest in using/procuring our product, there has not been ONE community that has wanted us to locate in their state. State officials like us but wont help. We may be forced to go overseas. We are non-toxic and totally green, But no one wants to help us locate and create jobs…they just want to cry about it.”

Video of a bad “automatic” door design

A funny video shows exactly why supposedly “intuitive” designs can be anything but. Too many designs neglect us poor end users in a quest to be different, or heaven-knows-what. The video makes you laugh because it such an extreme example. But I’m sure you will agree, all of us occasionally get made a fool by poor designs.


For example, consider hotel shower controls that give no clue as to how you are supposed to turn on the water. Or, how about the badly placed or absent street signs that cause you to miss your freeway exit. Other irritations: hotel shampoo containers with openings so tiny, you can hardly pour out the shampoo, and consumer packing you can barely open with huge pliers and a hammer, let alone your bare hands.


But back to a bad automatic-door design as shown in the video. Recently, I stayed at a hotel in Orlando that had a wrought-iron, decorative fence surrounding the swimming pool. Entering the area through the front gate was easy because I just happened to follow a couple inside. But when it came time to leave, I couldn’t figure out how to open the stupid gate! It turned out you had to pull up an almost invisible “pin” to release the gate mechanism. Even if the pin is intended as a child-proofing element, the design should be much more straightforward.

Cool video: F-16 tumbles in air

The folks at aviation site AVweb recently aired a video of an F-16 test flight that gets “interesting.” What’s also interesting is the explanation provided by the chief flight officer.


http://www.avweb.com/avwebflash/exclusivevids/ExclusiveVideo_F16_OutOfControl_YawDeparture_201012-1.html

plane.gif

“Jet ski for the skies”

Check out the nifty “Jet ski for the skies,” design posted on Core77’s site. The site says the design came from a collaboration among IDEO, Art Center, Nissan Design America, Troy Lee Designs, Scaled Composites, and Icon Aircraft. The 22-ft-long Icon A5 amphibious sport plane’s wings fold inwards so the vehicle can fit on the back of a trailer a car can pull. According to the site, the A5 recently won an IDEA award and will sell next year for $139,000.

md.gif

Watch cable TV on Machine Design Second Life site

Visit Second Life at Tipsico 197.14.144 to watch cable TV on Machine Design’s site. Meet you there for coffee!

Outrage of the day: Money for education diverted to pork

I would not have believed this one if I hadn’t seen it. Dickinson State University wants money from the Fund for the Improvement of Postsecondary Education to improve its Theodore Roosevelt Center. Northern Kentucky University wants over $2 million, mumbling something vague about “equipment.” Think of this next time you are asked to “invest” in public education.


http://chronicle.com/blogPost/Why-Is-Northern-Kentucky-U/7618/?sid=at&utm_source=at&utm_medium=en

A “made in USA” shirt that’s actually made in Mexico

http://blog.aflcio.org/2009/06/11/made-in-america-corporate-pr-not-practice/

Calendar

August 2009
M T W T F S S
« Jul   Sep »
 12
3456789
10111213141516
17181920212223
24252627282930
31  

Your Account

Subscribe

Subscribe to RSS Feed

Subscribe to MyYahoo News Feed

Subscribe to Bloglines

Google Syndication