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Top British Entry Sets Off For World Solar Challenge 2017



With the Bridgestone World Solar Challenge (BWSC) drawing
closer, Cambridge University Eco Racing (CUER) has embarked on the first stage
leading up to one of the greatest automotive challenges in the world. Their
entry Mirage – which will shortly arrive in Australia – will have to endure a
gruelling 3,000 km marathon from Darwin to Adelaide on 8th – 15th October 2017,
facing some of the harshest conditions imaginable.



Mirage will be the seventh car designed and built by the
CUER team, a group of 60 ambitious students from the University of Cambridge.
Now celebrating their 10th anniversary, the team’s knowledge of automotive
engineering and aerodynamics has enabled them to utilise cutting-edge
technology to push the boundaries of what is possible for solar-powered cars.

Tony Purnell, Head of Technical Development at British
Cycling and a member of CUER’s Steering Committee, comments that his endevours
to achieve greater efficiency at British Cycling are not disimilar to that of
the CUER team. He says:

“A bicycle has one human-horse power (300W), and Mirage has
just four human-horsepowers. A bicycle on the Tour de France can achieve more
than 25 mph over 2,200 miles, and Mirage will travel more than 60 mph over
1,870 miles. However, my road car needs 1,500 human-horse powers to get me from
A to B and produces toxic gases. In that respect, it really is incredible just
how efficient transport can be."

Mirage has an ultra-light, teardrop profile that places
aerodynamics at the forefront. With optimum performance in mind, the team has
created a much smaller car than most other teams, with a smaller surface area
of solar cells. These cells are made with satellite-grade high efficiency
Gallium Arsenide, and for further efficiency the team have developed a solar
tracking array which follows the sun’s trajectory and optimises the capture of
sunlight through the day.

The team have also identified the battery as a crucial area
where energy savings can be made. By developing and manufacturing a custom
Battery Management System housed within the car, the team is able to regulate
everything from battery temperature to power output.

Xiaofan Zhang, Project Manager at CUER, says that while a
lot of hard work has gone into getting Mirage shipped to Australia, there are
many more challenges to come:

“We have a built in passive cooling system this year, but
nonetheless temperatures are expected to soar as high as 40°C. In addition to
the drivers, a group of 20 CUER team members will follow the car each day,
providing engineering support as required. It’s a massive achievement for us to
get to Australia, and we couldn’t have done it without all our supporters, but
it’s not over yet!"

Tom Nash, a spokesperson from Europe’s leading product and
technology consultancy TTP, announces: “We are proud to once again support the
CUER team at the World Solar Challenge 2017. We are delighted to support
initiatives such as this which encourage engineers of the future to put their
skills into practice to develop real world applications. We wish all those
involved the very best of luck."

Tony Purnell concludes: “Every time the CUER team enters the
WSC it staggers me that a group of students, working in their spare time whilst
doing one of the most challenging degrees going, can get to the start of the challenge
with all the major components engineered by themselves save the battery and
motor.

“It’s no surprise so many CUER alumni have gone on to start
up their own businesses – once you’ve taken part in the WSC whilst completing a
degree at The University of Cambridge, nothing can possibly daunt you!"


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