Posted by: Alex Liberzon | April 23, 2008

Fan and turbine lifts this monster to the skies

Posted by: Alex Liberzon | April 23, 2008

Would never think that aerodynamics is so bad

Time to clip Formula 1’s wings – then we’ll really see Lewis Hamilton flying

All
this aerodynamic gear is killing the Grand Prix spectacle, with cars
unable to overtake and races decided on pit stops rather than driver
skill.

‘The
problem was graphically illustrated at Melbourne, with Kimi Raikkonen
being held up behind Honda’s Reubens Barrichello for 19 laps despite
the Ferrari being 1.5 seconds per lap faster…’

Wings
are the problem. Not the seventies pop-rock supergroup created to
continue to feed Paul McCartney’s over-bloated ego, but the
aerodynamics package bolted to F1 cars – and they’re ruining Formula 1.

Despite all of this
year’s changes to the driver’s aids – taking away traction and launch
control, stability programs etc, to make the racing more even – the F1
bosses have myopically neglected the one thing that would make the most
difference.

The massive
aerofoils that produce so much downforce that it is theoretically
possible to drive an F1 car on the ceiling are the fundamental problem
facing Formula 1 today. The hole punched through the air by a modern F1
car makes it all but impossible for a car following to overtake without
the leading driver either conceding the position or making a mistake.

The turbulent air
zone interrupts the airflow over the following car’s wings, robbing it
of its own downforce at the moment that it’s needed most – during
cornering. This leads to understeering, slower corner speeds and
prevents cars getting close enough to slipstream and then overtake on
the straights.

The problem was
graphically illustrated in the 2008 season opener at Melbourne, with
Ferrari pilot Kimi Raikkonen being held up behind Honda’s Reubens
Barrichello for 19 laps despite the Ferrari being 1.5 seconds per lap
faster than Barrichello’s chariot. Lewis Hamilton suffered the same
problem behind Mark Webber in Malaysia.

Although this is bad
enough, it gets even worse. The disturbed air doesn’t flow through the
car radiators properly, causing overheating and increased strain on the
engine. Raikkonen’s engine blew up a few laps from the end of the race
– coincidence? Probably not.

Australia’s former
world champion Alan Jones has long advocated the return to slick tyres
and reducing the amount of wing allowable to increase the
competitiveness of the sport. Many other recently retired drivers have
bemoaned the amount of technology that has decreased the downplayed the
role of drivers and made the car the real star of F1.

The reputation of
Formula 1 continues to take a battering. It is derisively referred to
as slot car racing because it is so difficult to overtake. The races
are interesting, but rarely exciting and there is something
fundamentally wrong with races being decided on pit stop strategy and
fuel loads. It should be about the combination of car and driver –
that’s what we pay to see.

Having said that, F1
fans are divided into two distinctly different tribes. There are those
who love the racing, with overtaking and crashes, who want to see the
very best cars and drivers pitted against each other.

On the other hand,
there are those who just want to see the pinnacle of automotive
engineering in its native environment; they are there for the sights,
sounds and smell of Formula 1. There is nothing quite like seeing a
live F1 grand prix. It is a feast for the senses and the fact that
there is a race thrown in is a bonus – but it’s not why they’re there.
Wouldn’t it be nice to keep both groups happy?

Is F1 too predictable? Come on petrol heads, give us your view, either with a comment below or in your own Sportingo article.


Aerodynamic Truck Trailer Cuts Fuel And Emissions By Up To 15 Percent

Creating an improved aerodynamic shape for truck trailers by mounting
sideskirts can lead to a cut in fuel consumption and emissions of up to
as much as 15%. Earlier promising predictions, based on mathematical
models and wind tunnel tests by TU Delft, have been confirmed during
road tests with an adapted trailer. This means that PART (Platform for
Aerodynamic Road Transport), the public-private partnership platform,
has produced an application which can immediately be put into
production.

more ….

Posted by: Alex Liberzon | April 18, 2008

Fan-assisted trucks

New Scientist Invention Blog: Fan-assisted trucks

ravel at 70 mph on a motorway, and approximately 65 per cent of the
fuel you burn goes to overcoming aerodynamic drag. So even a slight
reduction in drag will significantly improve fuel consumption. This is
a particular problem for lorries and buses.

Kambiz Salari at the Lawrence Livermore National Laboratory
in California, US, and colleagues say that much of the drag from a
“bluff body” such as bus or truck comes from the air vortices generated
behind the vehicle as it moves. So instead of making these vehicles
more wedge-shaped, significant fuel economies can be made by modifying
their behind.

Salari has designed a set of fans to be fitted to
the back of a cab or trailer that inject air into the air flow in a way
that significantly reduces the turbulence it generates. This should in
turn improve fuel economy, although the patent does not say the scale
of the potential gains.

Read the full fan-assisted truck patent application.

Justin Mullins, New Scientist consultant

Labels:

From: http://www.newscientist.com/blog/invention/2008/04/fan-assisted-trucks.html

Scientists Probe Water’s Mysterious Interactions At Molecular Level

from Molecular Level.” ScienceDaily 17 April 2008. 18 April 2008 <http://www.sciencedaily.com­ /releases/2008/04/080411101936.htm>.

ScienceDaily (Apr. 17, 200 8) — Some of the
most challenging problems in science concern the behaviour of the most
commonplace compound on the planet’s surface - water. But some of the
mysteries are now being unravelled by the latest analysis and imaging
techniques in an unfolding story that was presented at a recent
conference organised by the European Science Foundation (ESF) focusing
on interaction between water and other compounds at the molecular level.
more ….

Posted by: Alex Liberzon | April 18, 2008

Changing jet streams may alter paths of storms and hurricanes

Changing jet streams may alter paths of storms and hurricanes

Stanford, CA—The Earth’s jet streams, the high-altitude bands of
fast winds that strongly influence the paths of storms and other
weather systems, are shifting—possibly in response to global warming.
Scientists at the Carnegie Institution determined that over a 23-year
span from 1979 to 2001 the jet streams in both hemispheres have risen
in altitude and shifted toward the poles. The jet stream in the
northern hemisphere has also weakened. These changes fit the
predictions of global warming models and have implications for the
frequency and intensity of future storms, including hurricanes.

Cristina
Archer and Ken Caldeira of the Carnegie Institution’s Department of
Global Ecology tracked changes in the average position and strength of
jet streams using records compiled by the European Centre for
Medium-Range Weather Forecasts, the National Centers for Environmental
Protection, and the National Center for Atmospheric Research. The data
included outputs from weather prediction models, conventional
observations from weather balloons and surface instruments, and remote
observations from satellites. The results are published in the April 18
Geophysical Research Letters.

Jet streams twist and turn in a
wide swath that changes from day to day. The poleward shift in their
average location discovered by the researchers is small, about 19
kilometers (12 miles) per decade in the northern hemisphere, but if the
trend continues the impact could be significant. “The jet streams are
the driving factor for weather in half of the globe,” says Archer. “So,
as you can imagine, changes in the jets have the potential to affect
large populations and major climate systems.”

Storm paths in
North America are likely to shift northward as a result of the jet
stream changes. Hurricanes, whose development tends to be inhibited by
jet streams, may become more powerful and more frequent as the jet
streams move away from the sub-tropical zones where hurricanes are born.

The
observed changes are consistent with numerous other signals of global
warming found in previous studies, such as the widening of the tropical
belt, the cooling of the stratosphere, and the poleward shift of storm
tracks. This is the first study to use observation-based datasets to
examine trends in all the jet stream parameters, however.

“At
this point we can’t say for sure that this is the result of global
warming, but I think it is,” says Caldeira. “I would bet that the trend
in the jet streams’ positions will continue. It is something I’d put my
money on.”

###

Contact Ken Caldeira at 650-704-7212, kcaldeira@stanford.edu

For copies of the paper contact the authors

The Carnegie Institution (www.CIW.edu)
has been a pioneering force in basic scientific research since 1902. It
is a private, nonprofit organization with six research departments
throughout the U.S. Carnegie scientists are leaders in plant biology,
developmental biology, astronomy, materials science, global ecology,
and Earth and planetary science. The Department of Global Ecology,
located in Stanford, California, was established in 2002 to help build
the scientific foundations for a sustainable future. Its scientists
conduct basic research on a wide range of large-scale environmental
issues, including climate change, ocean acidification, biological
invasions, and changes in biodiversity.

Posted by: Alex Liberzon | April 13, 2008

Use his questions when you write a proposal

Heilmeier’s Catechism

A set of questions credited to Heilmeier that anyone proposing a
research project or product development effort should be able to answer.

  • What are you trying to do? Articulate your objectives using absolutely no jargon.
  • How is it done today, and what are the limits of current practice?
  • What’s new in your approach and why do you think it will be successful?
  • Who cares?
  • If you’re successful, what difference will it make?
  • What are the risks and the payoffs?
  • How much will it cost?
  • How long will it take?
  • What are the midterm and final “exams” to check for success?

George H. Heilmeier - Wikipedia, the free encyclopedia

Heilmeier’s Catechism

A set of questions credited to Heilmeier that anyone proposing a research project or product development effort should be able to answer.

* What are you trying to do? Articulate your objectives using absolutely no jargon.
* How is it done today, and what are the limits of current practice?
* What’s new in your approach and why do you think it will be successful?
* Who cares?
* If you’re successful, what difference will it make?
* What are the risks and the payoffs?
* How much will it cost?
* How long will it take?
* What are the midterm and final “exams” to check for success?

Posted by: Alex Liberzon | April 11, 2008

IBM cools the supercomputer by WATER

Posted by: Alex Liberzon | April 11, 2008

Excellent news - AIAA books are available for masses

April 7, 2008 – Reston, Virginia – The American Institute of
Aeronautics and Astronautics (AIAA) is pleased to announce a new e-book
initiative to make its unique content available in electronic form,
allowing for unprecedented ease and flexibility of access. AIAA has
partnered with MPS Technologies, a Macmillan company, to make e-books
available via MPS’ BookStore digital content delivery platform.

The
initial launch of the AIAA eBooks will include 130 titles from the AIAA
Education Series and the Progress in Astronautics and Aeronautics
series. Attendees at “SLA 2008,” the annual meeting of the Special
Libraries Association, June 15-18, 2008 in Seattle, Wash., will be the
first to see the new e-books.

“We are particularly excited
about making out-of-print Progress in Astronautics and Aeronautics
series titles widely available once more, as well as gaining new
exposure for authors. AIAA eBooks content will be available at the
chapter level in addition to the complete e-book. This flexibility will
enable us to offer bundled subject-related content in the near future,”
said Rodger Williams, AIAA Director of Publications.

In 1960,
the acclaimed Progress in Astronautics and Aeronautics series began
documenting the rapid technological advances in aerospace and related
fields. The series focuses on books that demonstrate a particular,
well-defined subject in aerospace science, engineering, or technology.
In-depth, technical substance is the primary emphasis, although some
volumes include additional material (such as semi-technical background
history) needed to thoroughly cover the subject.

Adopted
worldwide, the distinguished AIAA Education Series supplies highly
specialized textbooks and monographs for students and researchers in
colleges and universities. Working scientists and engineers count on
these texts to bring them up to speed for new projects, and they also
serve as lifelong references. Each book in the series reflects the work
of expert engineering professionals and professors who know how to
organize and present materials for the classroom and for practitioners.
Typically presenting subject material tutorially, they discuss
fundamental principles and concepts, and supply informed perspectives
on state-of-the-art advances.

The MPS BookStore digital
content delivery platform helps publishers manage the transition to new
digital publishing and distribution models. It allows publishers to
hold and display back-list and front-list book content in a consistent,
stable and secure digital repository for delivery via multiple channels
and in a number of formats. For more information, visit www.mpstechnologies.com.

###

AIAA
advances the state of aerospace science, engineering, and technological
leadership. Headquartered in suburban Washington, D.C., the Institute
serves over 35,000 members in 65 regional sections and 79 countries.
AIAA membership is drawn from all levels of industry, academia, private
research organizations, and government. For more information, visit www.aiaa.org.

American Institute of Aeronautics and Astronautics

1801 Alexander Bell Drive, Suite 500, Reston, VA 20191-4344

Phone: 703.264.7532 Fax: 703.264.7551 www.aiaa.org

AIAA announces new e-book initiative

AIAA announces new e-book initiative

Posted by: Alex Liberzon | April 5, 2008

Another jet-using killer

The Bombardier Beetle, Power Venom, And Spray Technologies

The Bombardier Beetle, Power Venom, And Spray Technologies

The bombardier beetle, found mainly in Africa and Asia, is
remarkable in that it can fire a powerful jet of hot, toxic fluid to
fight off predators such as birds and frogs. (Credit: Image courtesy of
Institute of Physics)

Read more on Science Daily

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