SUNSTANG Solar Car Project OHIO UNIVERSITY

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Over 40 students, faculty, and alumni work together with the generous support of countless sponsors to produce the Sunstang solar car.  This combination between education and industry helps build a strong relationship within the community and provides the team with the necessary expertise to run a successful project.

 

 

 

 

 

Team History

 

The SunStang project was conceived as an honors research project for engineering students in the summer of 1991. Over the next two and a half years students from across UWO's campus contributed their time and resources toward the research, design, construction and testing of a solar vehicle. The result was SunStang '93 named after the University's mascot, the Mustang.

 

The SunStang's first true test was the 1993 World Solar Challenge. This grueling cross-continental 3000 km race from the northern tip of Australia to the southern most tip attracted some of the most advanced solar vehicles in the world. Participants included universities and major automobile manufacturers such as Honda R&D, Aisen Seki (Toyota), and Mitsubishi.

 

Due to adverse weather conditions and technical problems the team was forced to retire from the race. This however was not seen as a defeat but rather a challenge to improve what had been done before.

 

A new team was assembled in the summer of 1994 with the task of redesigning a new car for Sunrayce '95, a 1700 km race from Indianapolis Indiana, to Denver Colorado. During that time students from the faculties of Engineering Science, Science, Social Science, Arts and Nursing invested more than 25,000 volunteer hours to produce SunStang '95, which finished Sunrayce '95 in 21st position overall. SunStang '96 was also given the special honor of being the 2nd place rookie finisher.

 

Following the Summer of 1995, the dedicated team spent seven months redesigning and manufacturing a new car in time for the first Canadian Solar Discovery Challenge, a race from London, Ontario to Montreal, Quebec. The teams determination, perseverance, and commitment lead them to a well deserved victory in 1996.

 

 

 

 

The Canadian race fueled the team with confidence as time drew near for the World Solar Challenge in 1996, a grueling 3,000 km Australian outback odyssey. The team, made up of a determined group of students, had set a goal of finishing the race within the ten day limit. Not only did the new and improved SunStang '96 finish the race but placed 12th overall in the world and 2nd in North America - a significant achievement, widely acknowledged as a great success.

 

In 1997 the SunStang team took the car to Sunrayce '97 from Indianapolis to Colorado Springs. SunStang placed 13th overall and was presented with the Spirit Award. At this point the team began design on what was to become SunStang 2003. It was to be much more aerodynamic than the previous SunStangs.

 

Between the years of 1998-2000, the SunStang team experienced some down-time. In 2001 the SunStang team was revived and resumed work on SunStang 2003. In May of 2003 the team purchased a new set of high-density lithium ion polymer batteries from Electrovaya. The team then took the car to Chicago for the American Solar Challenge Qualifier. Unfortunately the car suffered a mechanical failure where the rear kingpin is fixed to the body panels.

 

In 2003, the team attended the American Solar Challenge Kickoff in Rolla Missouri where they learned valuable information about the mechanical and electrical systems of solar cars and developed ideas for future vehicles. The team built an aluminum chassis to reinforce the composite panels of SunStang 2003, improved the vehicle vision with a clear canopy and improved electrical components including regeneration, driver control and telemetry of the vehicle from 2003 to 2004.

 

In the June of 2004, the team traveled to Topeka Kansas for Formula Sun Grand Prix 2004. In spite of Kansas winds and rainstorms, the team persevered and placed 3rd in stock class, gaining valuable race experience. The team was granted the "Stuck To It" award.

 

 


 

 

 

VEHICLE SPECIFICATIONS

 

 

Aero body

 

SunStang 2005 represents a significant improvement over our past cars. Sunstang 2005 employs a radical change in design, with airfoil style aerodynamics. With an emphasis on saving weight, the car is made of state-of-the-art composites donated by FiberCote and laid-up at Hudson Boat Works. Significant focus has been placed in driver canopy and wheel well openings to reduce air turbulence over those areas.

 

Chassis

 

The chassis of the vehicle is also made from composites, and consists of a box structure made of panels of carbon fiber and Kevlar. Carbon fiber is used because of its high strength to weight ratio, while the Kevlar is added to give electrical insulation and toughness in case of a collision. Instead of using a metal substructure, the team will embed hard points directly into the composite panels. This will allow greater distribution of loads throughout the composite panel structure, without requiring heavy aluminum and steel structural supports.

 

 

 

Suspension

 

The suspension is billet CNC machined out of 7075-T6 aircraft grade aluminum. The design of the front suspension of SunStang 2005 consists of two a-arms, an upright, a shock, and axle. The rear suspension is a trailing arm, which has two a-arms that are identical to the lower front wishbone. The entire suspension was designed and machined by SunStang members. Aluminum in the suspension was donated by Ideal Metals.

 

 

Brakes

 

The brake system integrates motorcycle calipers and master cylinders. As a safety measure redundancy is built into the system. There are two calipers on each front wheel, both have a separate line that connect to two separate master cylinders. This system is usually used in emergency or hard braking situations. Most of the braking will be done through the regenerative braking system (electrical).

 

 

Wheels

 

The SunStang solar car wheels were designed by the SunStang solar car team with the help of the Institute of Magnesium Technology in Sainte-Foy, Quebec. Our custom magnesium die cast wheels provide the team with durable but light weight wheels.

 

 

ELECTRICAL

 

 

Solar Array

 

SunStang 2005 will be powered by 1000 silicon solar cells, at 20% efficiency, generating approximately 1500 watts of power. This is the only power the SunStang is able to use once a race begins.

 

 

Batteries

 

Power from the solar array is transferred into a bank of 108 Electrovaya Lithium Ion Polymer batteries. This pack weighs about 25 kg, and can store close to 4.5 kWh of energy. Although the team is allowed to start a race with a fully charged battery pack, the goal of a good race strategy is to end the race with no energy left stored in the batteries.

 

 

 

 

 

Battery Protection and Monitoring

 

Lithium based batteries are very volatile if used outside of their designed range. For this reason, sophisticated control and monitoring circuits are built into the car to keep the batteries working safely. These circuits protect against over/under voltage, over current, and over temperature situations. A failure in this system could result in damage to the batteries, to the car, or even a lithium fire or explosion. Very special care is taken to make sure that these circuits work reliably and effectively.

 

 

In-Hub Motor

 

The motor provides 11 HP of direct drive power to the wheel with over 98% conversion efficiency. The motor is a state-of-the-art design, built specifically for solar car racing. Running at maximum speed, this motor can propel the car at over 130 km/h. During braking, the motor acts as a generator which reclaims some of the energy of the moving car and stores it back into the battery pack.

 

 

Telemetry

 

SunStang 2005 will contain a wide variety of sensors that will monitor all aspects of the car such as the voltage and current of the solar array and battery packs, the temperature of the batteries, motor and driver, and the car's GPS position. Additional sensors will measure the strain in key chassis and suspension components. This data is used by the team to optimize the vehicle during testing and while racing.

 

Driver Control

 

The driver is able to monitor variables which are key to operating the solar car, such as solar array current, speed, the battery pack's state of charge, and more. The driver can also control the various aspects of the car's operation, such as setting a cruise control, or disabling all power flow within the car in case of an emergency. The cruise control can also be set to maintain a constant power consumption, or to adjust its speed to match the power coming from the solar array.

 

 

 

 

LINKS

 

 

Sunstang Home | news | donate | webcam | gallery  |  biz | alumni | contactlinks

 

SunStang 2005: news and gallery

 

 

 

 

 

 

 

 

CONTACTS

 

http://www.eng.uwo.ca/sunstang/

UWO Office

Sunstang Project
University of Western Ontario
Spencer Engineering Building, Dock 17
London, Ontario
N6A 5B9
Canada

Telephone: 519.661.2111 x88312
Fax: 519.661.3020

 

 

TEAM MEMBERS

 

 

Member

Role

E-Mail Address

Imran Atcha

Project Manager

iatcha@uwo.ca

Brian Coulter

Mechanical

bcoulte@uwo.ca

Craig Follett

Business / Electrical

rfollett@uwo.ca

Hersh Gandhi

Business Manager

hgandhi2@uwo.ca

Tom Gwozdz

Electrical Manager

tgwozdz@uwo.ca

Greg Lindstrom

Electrical Specialist

glindstr@uwo.ca

Chris Lohnes

Business

clohnes3@uwo.ca

Rory McIntyre

Mechanical Manager

rmcinty2@uwo.ca

Kay Schonberger

Business

kschonbe@uwo.ca

 

 

 

 

 

 


 

"The supply of solar energy is both without limit and cost;
solar energy will pour down on us long after we run out of fossil fuels."

Charles Fritts, 1886, inventor of the first selenium solar panel.

 


 

 

 

The Website is sponsored by Solar Cola

 

 

ORGANISATION A-Z

CAR'S NAME

TEAM NAME

Aristotle Uni of Thessaloniki, Helios

Helios

Faculty of Engineering

Arizona Solar Racing Team - USA

Arizona Solar Racing Team

Auburn University

Sol of Auburn

Sol of Auburn

Aurora Team, Australia

Aurora

Aurora Vehicle Association

Bochum Solar Car Team

Das SolarCar der Fachhochschule

California Poly S University

SLO Burn  Sidewinder

San Luis Obispo

Clarkson Uni Solar Car Team, USA

The Solar Knights

Delft University - Holland

NUNA I & II 2003

Dell Winston School

The Hunter

Solar Car Challenge

Desert Rose, Northern Territory Uni

FUJI DESERT ROSE

Drexel SunDragon Home Page

École de technologie supérieure Quebec

Eclipse V (5)

Éclipse Vehicular Solaire 

École Polytechnique de Montréal

Esteban

Eko-Auto  Poland

Eko-Auto

Electron Analytic Corporation

Dark Horse

EAC Skunkworks

George Washington University

George Washington Uni Solar Car

Georgia Institute of Technology

Solar Jackets

Solar Jackets

Heliodet, Germany

Heliodet

Heliodet, Solar Car Team

Helios - Lille, France

Hélios IV

Hautes Etudes d'Ingénieur

Honda Car Company

Honda

Illinois State University

Surya, Ratha, Mercury

Illinois State University Team

Iowa State University

Fusion

Team PrISUm

Jonasun  Japan

Orbit

Solar Car Paviion

Kansas State University

Paragon

Solar Car Racing Team

Los Altos Academy of Engineering

Los Altos Solar Car Team

Massachusetts Institute of Technology

Tesseract

MIT

McGill University Monteal, Canada

iSun

Team iSun

McMaster University

Phoenix

McMaster Uni Solar Car Project

Messiah College Grantham, Penns

Genesis II

Genesis II Solar Racing Team

Michigan State University

 

Solar Racing Team

Michigan Technological University

Solar Car Team

Minnesota S Uni-Mankato/Winona S Uni

Minnesota Solar Car Team

North Dakota State University

The Double Deuce

Sunsetters - Solar Race Team

Northwestern University

N'Uvation

Northwestern University

Nuon Solar Team, Netherlands

Nuon 3

Het Nuon Solar Team

Osaka Sangyo University, Japan

OSU model S

Solar Car Team

Prairie View A&M University

Solaris

Sun Panthers

Principia College

RA 6

Principia College Solar Car Team

Purdue University

SPOT 2

Purdue University Solar Racing

Queen's University Canada

Radiance  Gemini

Queen's Solar Vehicle Team

Red River College 

Red River Raycer

Red River College Solar Car Team

Rice University

Rice University

Rose-Hulman Institute of Technology

Rose-Hulman Solar Car Team

Southern Illinois Uni Edwardsville

Cougar Cruiser

Southern Illinois University

South Bank University, UK

Mad Dog

South Bank Mad Dog Team

South Dakota School Mines & Tech

Solar Motion

South Dakota Solar Motion Team

Southern Taiwan University Tech

Southern Taiwan Solar Team

Stanford University

Solstice

Stanford Solar Car Project

Tamagawa University - Japan

Tamagawa Solar Challenge Project

Team Futura, Italy

FUTURA 2

Team Futura

Team SunLake - Japan

Phaethon model

Team SunLake TOYOBO

Texas A&M University

Columbia Sunraycer

Texas A&M Motorsports Team

The Power of One  - Toronto

Xof1

The Xof1 solar car team

Tufts University

ANNE E. B. II

Nerd Girls

University of Alberta

University of Alberta Team

University of Arizona

Drifter

Solar Racing Team

University of Calgary

 

UC Calgary Solar Car Team

University of California-Berkeley

CalSol 

California Calsol Team

University of Kansas

Solution, CATalyst

KSU Solar Car Racing Team

University of Kentucky

Gato del Sol II

Solar Car Team

University of Massachusetts 

Spirit of Mass 413

Lowell Solar Racing Team

University of Michigan

Momentum

University of Michigan

University of Minnesota

Borealis III

U of M Solar Vehicle Project

University of Missouri Columbia

Suntiger VI

The Mizzou Solar Car Project

University of Missouri Rolla

Solar Miner V

Solar Minor Car Team 

University of North Dakota

Subzero 3

Team SubZero

University of Ontario Institute of Tech

UOI Solar Vehicle Team

Uni of New South Wales SCR Team

UNSW Sunswift III

New South Wales SCR Team

University of Patras, Hermes

Solar Car Team

University of Pennsylvania

Keystone

Penn Solar Racing

University of Queensland

Sunshark

Queensland Solar Team

University of South Australia

Ned  KELLY

SA Solar Car Consortium

University of Texas at Austin

Solar Steer

Solar Vehicles Team

University of Texas at El Paso

 

Solraycers

University of Toronto

Blue Sky

Blue Sky Solar Racing

University of Toulouse

Heliotrope

Heliotrope Solar Car Team

University of Utah 

 

Vehicle Design Team Utah

University of Virginia

 

UVa Solar Car Team

University of Waterloo

Midnight Sun VIII

Midnight Sun Solar Race Team

University of Western Ontario

Sunstang

Sunstang USP Solar Car Team

USP Solar Car Team

USP Solar Car Team

Western Michigan University

Sunseeker 05

W Michigan Solar Car Team

Yale University

The John Lee

Team Lux

 

 

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