The Press-Dispatch
Issue link: https://www.ifoldsflip.com/i/60656
B-4 Wednesday, March 28, 2012 The Press-Dispatch Purdue students to race solar car 'Celeritas' in Shell Eco-marathon lar Racing will compete this week in the Shell Eco-mara- thon Americas, from March 29-April 1 in Houston. The car won last year's Solar Ur- ban Concept category of the competition, an international contest for college and high school students to design and build the most fuel-ef- ficient vehicles. The Purdue car, Celeri- Members of Purdue So- functions. The Purdue Solar Racing tas, was designed and built entirely by students and will compete in the Shell Eco- marathon Americas 2012. Category of the competi- tion, achieving an efficien- cy equivalent to 2,175 miles per gallon. "Our goal is to get an even team had previously won the Eco-marathon's Proto- type Solar category three straight years with a vehi- cle called Pulsar, achieving the equivalent of 4,913 miles per gallon, the most ever re- corded at the event. Celeri- tas competes in the Solar Ur- ban Concept category, which is more difficult because ve- hicles must be designed for practical use on public roads and highways, Lapetina said. The single-seat vehicle has a cruising speed of 30- 40 mph and a top speed of about 50 mph. Celeritas has cost about higher efficiency this time," said Zack Lapetina, presi- dent of Purdue Solar Rac- ing. Celeritas has been up- graded since its maiden race last year. "It's a lot more efficient $100,000 to design and build. The work is entirely vol- in terms of power manage- ment, so you can go farther on a battery charge," said Lapetina, a junior in aero- nautical engineering from Geneva, Ill. Students have added two dashboard displays that show a menu telling the driv- er how much power is left in the batteries as well as the status of other systems in the car, and they've also ad- justed the suspension to re- duce friction, he said. About 50 undergradu- untary. The students re- ceive no course credits and contains an outreach com- ponent, with project mem- bers giving presentations in public schools and at events throughout the state and across the country. Purdue students have been designing and build- ing solar cars since 1991 and have completed eight vehi- cles since then. Design work on Celeri- efficient electric motor and high-level computer logic embedded in many compo- nents. This electronic intel- ligence makes it possible for the driver to change cruise control and other settings on the fly to maximize perfor- mance. A battery manage- ment and protection sys- tem ensures that the lithium iron phosphate cells operate properly and don't overheat or explode, and logic circuits relay diagnostic data to a lap- top computer monitored re- motely by the team. The Shell Eco-marathon The vehicle has an ultra- Americas 2012 roster in- cludes 131 vehicles from 112 teams from 39 high schools and 46 universities from the United States, Brazil, Cana- da and Mexico. Also leading the Purdue ate students are involved in the project in teams focus- ing on the car's carbon-fiber body; the propulsion, brak- ing and suspension systems; as well as critical business, marketing and fundraising tas began in 2009. The car weighs about 325 pounds and is made primarily of a lightweight material of car- bon-fiber sheets sandwiched around a honeycomb cen- ter to add strength. More than 200 photovoltaic cells convert sunlight into elec- tricity to charge 48 lithium iron phosphate batteries, which then power a motor that drives one of the rear wheels. solar-car project are Brian Thompson, vice president and a mechanical engineer- ing senior; Rachel Bodien, secretary and a junior in aeronautical engineering; Kevin Ellis, treasurer and a senior in aeronautical en- gineering; Alex Van Alme- lo, electrical team director and a junior in computer engineering; Brian Kelley, a senior in computer engi- neering; Craig Lechlitner, a senior in electrical engi- neering; James Gilbertson, mechanical team director and a junior in mechanical engineering; Bill Smith, a se- nior in mechanical engineer- ing; Kenneth Roush, aero- nautics team director and a junior in aeronautical engi- neering; and Cole Skelton, a senior in mechanical en- gineering. Purdue one of 15 in EcoCAR2 contest neering and technology stu- dents will soon begin work on a 2013 Chevrolet Malibu as part of an international competition designed to re- duce the environmental im- pact of passenger vehicles. The effort is part of Eco- A group of Purdue engi- CAR2, a program estab- lished by the U.S. Depart- ment of Energy and Gener- al Motors, which allows stu- dents to achieve the contest's mission by designing and im- plementing hybrid-electric power train technology on a 2013 Chevrolet Malibu. Purdue is scheduled to re- ceive its vehicle this summer, as participating schools in EcoCAR2 will receive the first 15 automobiles off the assembly line. "Students get a perspec- tive on what it takes to build a real-life car," said Peter Meckl, professor of mechan- ical engineering who over- sees work in power train con- trols and diagnostics. "Of- ten times in academia we're forced to the bare bones minimum. This has all of the complexities of real-life design. They're going to be able to see their accomplish- ments." Purdue's EcoCAR2 team board battery to reduce fu- el use and can be recharged using a standard wall outlet. Once the plug-in range of the battery is depleted, the vehi- cle can still operate as a reg- ular hybrid. Purdue will use B20 fuel, which is a blend of 20 percent biodiesel and 80 percent petroleum diesel, to extend the range of the ve- hicles. "We are looking at an ap- proach that is unique be- cause of components se- lected and the integration of them," said Haley Moore, a graduate student in mechan- ical engineering technology who serves as project manag- er. "Some things have been done and some tools have been used, but the way all the components work togeth- er is different than what has been seen before." EcoCAR2 is nearing com- pletion of the first year of competition, which culmi- nates with all teams attend- ing a trade show in Holly- wood, Calif. in May. Each team will create a booth, which must include a driv- ing simulator, powered by a control box that has been de- veloped over the past year. "The simulator is realistic will use Parallel through the Road (PTTR) architecture with its vehicle, which utiliz- es electrical energy to pow- er an electric motor on one axle, while an engine drives another axle. The PTTR architecture is a Plug-In Hybrid Electric Vehicle, which uses an on- in the sense that we're pro- gramming a control box that will go into a vehicle," said Vahid Motevalli, professor of mechanical engineering technology and the team's lead adviser. "You don't have to take the risks of actually driving a test car. You're not driving a car. You're driving a simulator. Once all of the eant deadline is March 31. Categories: girls, 0-12 Deadline March 31 for Purple Ribbon pageant The Purple Ribbon pag- months, 13-24 months, 25- 36 months, 4-6 years, 7- 9 years, 10-12 years, 13- 15 years and 16-19 years; boys, 0-1 year, 2-3 years and 4-5 years. The pageant will be April bugs are out you can take the control box and put it into the car." The competition has changed over the past 24 years to make it more like vehicle development, Mote- valli said. "We have to follow GM's vehicle development pro- gram," he said. "When you're producing a real ve- hicle there may be a lot of interesting ways and innova- tions you can approach, but you have to complete them in a timely, safe and secure fashion. We have a very con- tained framework, but with- in that framework we have to figure out ways to make our vehicle function well." Purdue will keep its vehi- cle in Herrick Laboratories. The lab area will be inspect- ed by EcoCAR2 officials lat- er this month. The Purdue team has more than 50 students, rang- ing from doctoral to fresh- man level. The program has benefited participants great- ly, Meckl said. "It's been demonstrated liott and Sharon Northerner; second row (l to r): Linda Ross Daffron, Anna Belle Bratton Benjamin and Gail Corn Johnson; third row (l to r): Don Kirby, Phyllis Hardin Kirby, Ned Barr, Georgina Barr, Marilyn Hickrod (friend of Anne Belle's), Dale Northerner, George Daffron and Alan Bechtel. Sahm's, Friday, March 23 with fifteen Alumni and friends attending. First row (l to r): Delta Corn Nordhorn, Martha Luttrull Bechtel, Jackie El- Pesticide additives cause drifting droplets, but can be controlled speed visualization reveal a synergistic effect between chemical additives that can lead to the formation of sat- ellite droplets during crop spraying. Emission of sat- ellite droplets is also detri- mental in a number of appli- cations ranging from food processing to rocket propul- sion systems. Chemical additives that Simulations and high- help agricultural pesticides adhere to their targets dur- ing spraying can lead to for- mation of smaller "satellite" droplets that cause those pes- ticides to drift into unwanted areas, Purdue University re- searchers have found. Carlos Corvalan, an asso- leaves. The polymeric addi- tives reduce viscosity—liquid resistance —making the pes- ticide flow easier. Polymeric additives also keep the drops from bouncing off plant sur- faces. "Each additive is designed to improve the characteris- tics of the main drops," Corv- alan said. "But there is a side effect." When both additives are strength, concentration or ratio of surfactants to poly- mer additives can mitigate or eliminate the formation of unwanted satellite droplets. Corvalan is now transfer- present in a pesticide, the surfactant pushes more liq- uid toward the filament. The reduced viscosity allows liq- uid to flow more easily in that direction, resulting in a well- defined satellite drop form- ing in the filament. "When you put both addi- ciate professor of food sci- ence, said understanding how the additives work to- gether means they could be designed to decrease the health, environmental and property damage risks caused by drift. Corvalan; Osvaldo Campanella, a Pur- due professor of agricultur- al and biological engineer- ing; and Paul E. Sojka, a Pur- due professor of mechanical engineering, published their results in a February issue of the journal Chemical Engi- neering Science. "When we spray liquids, tives together, there is a syn- ergistic effect. The force in- duced by the surfactant that was opposed by viscosity is no longer so strongly op- posed, and this combined effect can result in the for- mation of satellite droplets," Corvalan said. Drifting of agricultural ring the results obtained from agricultural research in- to food processing and rock- et propulsion work. He said drop size uniformity is as im- portant for fuels sprayed in- to rocket combustion cham- bers as for the production of food emulsions. The U.S. Department of Agriculture National Insti- tute of Food and Agriculture, Air Quality Program, and the Army Research Office fund- ed the work. SUN., APRIL 8 1-3 PM MUST SEE! OPEN HOUSE we have what we call main drops, which are drops of the desired size, and we can also have smaller satellite drops. The smaller drops move easi- ly by wind and travel long dis- tances," Corvalan said. "Now that we know better how ad- ditives influence the forma- tion of satellite droplets, we can control their formation." The research will also that people who have worked on the EcoCAR projects have 100 percent job placement," he said. "Putting this on their resume not only gives the students more confi- dence, but they can demon- strate that they've been in- volved with an actual car and use the exact protocols used at GM to put a car together." Other participants include have applications in food pro- cessing and rocket propul- sion, where drop sizes are important. When liquids are sprayed, pesticides not only increas- es waste and cost for farm- ers but also can cause health, environmental and proper- ty damage, according to the U.S. Environmental Protec- tion Agency. The results show that carefully modulating the 1961 N. C.R. 775 W., Petersburg Country Ranch home on 10 acres with pole building and stocked pond. $96,000 Listing # 65040 Payments as low as $384/month! 100% financing available! 376 W. 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Graber, AU19400133 - AH21000004 • www.graberauctions.com 1382 South St. Rd. 257, Washington Graber Auctions 812-254-2220 the universities of Tennessee (Knoxville), Victoria, Wash- ington and Waterloo; along with California State (Los Angeles), Colorado State, Embry-Riddle Aeronautical, Mississippi State, North Car- olina State, Ohio State, Penn- sylvania State and Wayne State universities; Virginia Tech and Rose-Hulman In- stitute of Technology. they start in a stream and eventually form drops. As the liquids move farther in the air, drops connected by a thin filament start to pull apart. That filament eventu- ally detaches and becomes part of the drops that were forming on either side of it. 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