IEEE Spectrum April, 2011 - 23

A cAr thAt's
FAster thAn
A speeding
BuLLet

British pilot Andy
green has already
gone faster on the
ground than most
things go in the air.
Now he's aiming for
1000 mph by 2012

rOAd ShArK: the Bloodhound
SSc show car lies in wait at
its home on the waterfront in
Bristol, England.

I

n 1997, British Royal Air 
Force fighter pilot Andy 
Green broke the world land‑
speed record at 763 miles 
per hour (1228 kilometers 
per hour)-literally faster 
than some bullets. Now he's 
gunning for a new record 
in 2012-driving 1000 mph 
(1609 km/h) in the new 
Bloodhound supersonic car. 
Getting there is tricky. 
A 30 percent increase in 
speed takes a lot more than 
30 percent more power or 
strength. Loads and stresses 
increase by the square of the 
speed-power by the cube, 
says Green. So the main 
challenges were building 
a craft that could maintain 
control and stability at 
supersonic speeds, and 
engines that could produce 
enough thrust while keeping 
weight and air resistance 
down. There's a jet engine to 
accelerate the Bloodhound 
to 350 mph (563 km/h), 
and a rocket to boost it to 
1050 mph (1690 km/h). The 
US $15 million project, led 
by British entrepreneur 
Richard Noble and funded 
by more than 300 sponsors, 
uses a computer at Swansea 
University, in Wales, with 
128 parallel processors 
spectrum.ieee.org

photos: Flow Images

to analyze 100 million 
concurrent data points 
involving fluid dynamics 
and aerodynamics, and 
another three processors 
to monitor engine 
systems and controls.
"We're doing things 
jet fighters can't do," says 
Green, who graduated from 
the University of Oxford 
in 1983 with a bachelor's 
in mathematics and has 
been on active Royal Air 
Force duty ever since. "For 
example, the wheels have to 
handle 50 000 g's and 10 300 
revolutions per minute."

The Paris‑based Fédé‑
ration Internationale de 
l'Automobile, official keeper of 
the world land‑speed record, 
allows competitors-like the 
joint U.S./Canadian North 
American Eagle Project and 
Australia's Aussie Invader-
to discuss their approaches 
with each other. (Another 
competitor, the Fossett LSR, 
is on hold. Its former sponsor, 
the American adventurer 
Steve Fossett, disappeared 
and presumably died in a 
plane crash in 2007.) "The 
only rules are that the 
vehicles have four wheels 

and be controlled by a driver," 
says Green. "Our vehicles are 
remarkably different, so we 
can share information with 
the competition." (Among 
the many differences, the 
Eagle is jet powered only, the 
Bloodhound has both a jet 
and a hybrid rocket engine, 
and the Invader uses a single 
liquid‑fueled rocket motor.
While the Bloodhound 
project accelerates toward a 
2012 summer test of 800 mph 
(1287 km/h), it also serves as 
an educational program that 
uses the physics, engineering, 
and environmental problems 
it encounters to teach math, 
science, and technology and 
inspire a new generation of 
scientists and engineers. The 
project is being followed by 
4000 schools and colleges in 
the United Kingdom and in 
202 other countries worldwide.
"The world is short of 
engineers," says Green. 
One goal of the project is to 
inspire a new generation of 
engineers. "Kids nowadays 
want to make money or be 
on reality television," he 
says. "How do you ignite 
interest at school level? This 
is what Bloodhound is trying 
to achieve."   -Susan Karlin

April 2011 * iEEE SpEctrum * NA

23


http://spectrum.ieee.org

Table of Contents for the Digital Edition of IEEE Spectrum April, 2011

IEEE Spectrum April, 2011 - Cover1
IEEE Spectrum April, 2011 - Cover2
IEEE Spectrum April, 2011 - 1
IEEE Spectrum April, 2011 - 2
IEEE Spectrum April, 2011 - 3
IEEE Spectrum April, 2011 - 4
IEEE Spectrum April, 2011 - 5
IEEE Spectrum April, 2011 - 6
IEEE Spectrum April, 2011 - 7
IEEE Spectrum April, 2011 - 8
IEEE Spectrum April, 2011 - 9
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IEEE Spectrum April, 2011 - 15
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IEEE Spectrum April, 2011 - 17
IEEE Spectrum April, 2011 - 18
IEEE Spectrum April, 2011 - 19
IEEE Spectrum April, 2011 - 20
IEEE Spectrum April, 2011 - 21
IEEE Spectrum April, 2011 - 22
IEEE Spectrum April, 2011 - 23
IEEE Spectrum April, 2011 - 24
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IEEE Spectrum April, 2011 - 26
IEEE Spectrum April, 2011 - 27
IEEE Spectrum April, 2011 - 28
IEEE Spectrum April, 2011 - 29
IEEE Spectrum April, 2011 - 30
IEEE Spectrum April, 2011 - 31
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IEEE Spectrum April, 2011 - 37
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IEEE Spectrum April, 2011 - 40
IEEE Spectrum April, 2011 - 41
IEEE Spectrum April, 2011 - 42
IEEE Spectrum April, 2011 - 43
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IEEE Spectrum April, 2011 - 45
IEEE Spectrum April, 2011 - 46
IEEE Spectrum April, 2011 - 47
IEEE Spectrum April, 2011 - 48
IEEE Spectrum April, 2011 - 49
IEEE Spectrum April, 2011 - 50
IEEE Spectrum April, 2011 - 51
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IEEE Spectrum April, 2011 - 55
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IEEE Spectrum April, 2011 - 58
IEEE Spectrum April, 2011 - 59
IEEE Spectrum April, 2011 - 60
IEEE Spectrum April, 2011 - 61
IEEE Spectrum April, 2011 - 62
IEEE Spectrum April, 2011 - 63
IEEE Spectrum April, 2011 - 64
IEEE Spectrum April, 2011 - Cover3
IEEE Spectrum April, 2011 - Cover4
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