Discussion:
Delta Wing Four Seater Concept
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MummyChunk
2014-05-30 00:22:30 UTC
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The DeltaWing has been an interesting experiment to watch evolve

From A



FIRST LOOK: THE DELTAWING ROAD CA
POSTED ON Date TUESDAY, MAY 27, 2014 AT 08:47P

DELTAWING TECHNOLOGIES UNVEILS RENDERING OF FOUR-PASSENGER CA
FEATURING PIONEERING DESIGN ARCHITECTUR

Company offers a glimpse of a DeltaWing® for the street that applie
unique, innovative design architecture and lightweight technologies t
achieve significantly improved fuel econom

DeltaWing Technologies Inc. today revealed how the groundbreakin
DeltaWing® architecture – a highly aerodynamic and lightweight desig
currently competing in IMSA sports car road races in the form of th
DeltaWing race car – could look as a street-legal, four-passenge
car

The rendering depicts an exciting, aerodynamic car design that evoke
motion, energy and speed even at a standstill and is unlike any o
today's road-going automobiles. And yet the innovative DeltaWing
shape is a true form-follows-function design that can significantl
reduce aerodynamic drag to help increase fuel efficiency. Anothe
attribute of the shape is considerably less overall mass. Whe
combined with light-yet-strong materials such as lightweight steel
aluminum and advanced composite materials, the result is a car tha
can deliver any given performance level with significantly reduce
fuel consumption and greenhouse gas emissions compared to conventiona
automobiles

Intended as a solution for manufacturers facing more stringent fue
economy and emissions standards, the platform offers efficienc
benefits whether using new generation smaller and lighter hig
efficiency gas or diesel powertrains, alternative fuels lik
compressed natural gas (CNG), or today's and tomorrow's hybrid an
all-electric powerplants. DeltaWing Technologies Inc. intends t
partner with mass-market auto companies that share its vision rathe
than manufacture independently, thus offering cars with the DeltaWing
architecture to a broad global audience and significantly expandin
the design's efficiency and environmental benefits

The narrow-track front wheelbase incorporates smaller width tires. Th
rear-engine design places the center of gravity far to the rear. Tha
results in significantly less weight on the front axles, reducin
rolling resistance and further increasing efficiency. Handling i
extraordinarily agile, as proven by the narrow front track of th
DeltaWing race car competing on America's most challenging roa
courses in the IMSA-sanctioned TUDOR United SportsCar Championship

"Many of the aerodynamic, lightweight and handling benefits o
the race car can translate to the street," said Don Panoz
chairman of DeltaWing Technologies Inc. "We are competing at th
highest levels of road racing with half the weight, half th
horsepower, and nearly half of the fuel consumption. We believe we ca
deliver similar results on the street without compromising safety
comfort and performance. We have a formula that's highly efficient an
still fun to drive.

Panoz also said the DeltaWing race car proves teams do not have t
rely heavily on horsepower to be competitive. "Design
technology, efficient use of lightweight materials, lower horsepowe
and lower fuel consumption is a winning formula. I believe this is th
future of motorsports, and key to meeting the next decade's fue
economy and emissions standards.

Positioned to Help Auto Manufacturers Meet the 2025 54.5 mpg CAF
Requirement

DeltaWing Technologies Inc.'s goal is to advance the future of th
automobile by delivering fuel efficient, green technologies tha
benefit everyday drivers and commuters and reduce oil consumption an
greenhouse gas emissions. Company executives have been meeting wit
auto manufacturers that support the goal of bringing the DeltaWing
vehicle architecture and its lightweight and efficiency technologie
to road cars to help meet the CAFE (Corporate Average Fuel Economy
standard of 54.5 mpg by model year 2025

The four cornerstones of the DeltaWing® approach are reduced weight
increased powertrain efficiency, decreased energy consumption, an
improved aerodynamics. DeltaWing Technologies is seeking OEM partners
that share its vision, ultimately licensing to automobile
manufacturers the DeltaWing® vehicle architecture that is 35 percent
lighter, requires 35 percent less horsepower, and consumes 35 percent
less fuel. The current performance targets are 0-60 mph in about six
seconds, 130 mph top test-track speed, and up to 70 mpg when using a
small displacement, four-cylinder engine producing between 85 and 110
horsepower.

"While we certainly have the capabilities and decades of auto
manufacturing experience through our affiliates Panoz LLC and Élan
Motorsports Technologies, the DeltaWing deserves the higher volume
that an OEM can provide to truly have a beneficial impact on the
future and the environment," said Al Speyer, DeltaWing
Technologies president and COO.

Reducing Costs, Retaining Brand Identity, and Streamlining Timelines

DeltaWing Technologies can help OEMs that license its technology
design and develop a DeltaWing® road vehicle using their existing
components and systems or downsized components, which can greatly
reduce vehicle design and production costs. It also will work closely
with each OEM to incorporate their brand styling design requirements
and meet their vehicle content needs.

With the typical new car, truck or SUV taking approximately five years
to go from concept to production, DeltaWing can spearhead the
validation and certification processes and help shorten the timeline
to deliver a production-ready prototype. This capability comes from
the close interaction among DeltaWing Technologies' aforementioned
automotive and technology affiliates.

The DeltaWing® road car computer-aided design styling and modular
platform engineering plans are very far along and at the point where
further work would focus on OEM-specific needs. This advance work also
greatly contributes to decreasing the production-ready platform
development timeline.

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Peter Hill
2014-06-01 19:17:18 UTC
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The DeltaWing has been an interesting experiment to watch evolve.
<snip cut and paste from press blurb>
http://www.jlaforums.com/viewtopic.php?p=288998567#288998567
I'm fairly sure it would do better going backwards.

It's not how you penetrate the air but how you leave it.

WWII aircraft, aerodynamicist Sir Sidney CAMM said a car should taper to
the rear, when it's too long cut it off flat and recess the transom with
a sharp edged lip to shed the vortex and stop it reattaching. The result
of applying this, is a fastback with a distinctive recessed rear transom.

Pre WWII Kamm a German auto aerodynamicist said once the full section
was obtained it should be maintained all the way to the rear. His last
creation the 1940 BMW 328 Kamm Coupé, he was clearly groping his way to
a fastback but had failed to get there. While the large radius
transitions to the supposedly £cut off flat" transom he used at the rear
end ensure the turbulent wake is firmly attached to the car.
http://www.netcarshow.com/bmw/1940-328_kamm_coupe/

German car makers still persist in styling the rear of their cars with
these excessively large drag inducing radii.
--
Peter Hill
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