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Radical DeltaWing rocket-shaped car proposed to revitalise IndyCar
Gizmag.com ^ | 2/11/10 | Loz Blain

Posted on 02/12/2010 6:12:43 AM PST by Reaganesque

Two of four submissions have now been unveiled by the companies wishing to produce the next generation of IndyCar open-wheel racers, and the most recent one is one of the most fascinating looking racecars we've ever seen. The DeltaWing submission is a radical departure from traditional open-wheeler design - in fact, the only thing you could really compare it to is the bizarre lovechild of a drag racer and a Batmobile. With its comically narrow rocketship front end, broad rear end and narrow tyres, the DeltaWing aims to outperform the current crop of IndyCars for significantly less money, while delivering extraordinary efficiency gains and leaving a clear airstream for following cars, in order to promote close racing and overtaking. But is the public ready for a car that looks... so little like a car?

IndyCar racing is a close-fought and exciting spectacle, tailor-made for the American TV audience with its combination of oval tracks and road racing. In recent years, it has become pretty much a one-make series - Honda engines in a Dallara chassis - and while the Dallara gear has been successful, IndyCar's organizers are looking for a way to move forward in a way that promotes closer racing and technological development.

The Dallara chassis looks a lot like a Formula One car - open wheelers with big, flat wings at front and rear - and it's this aerodynamic configuration that has been proving problematic of late, as it has in Formula One. Because the cars rely on such massive downforce from their front and rear wing spoilers for cornering traction, a car that's following behind another car is at a severe disadvantage because it's traveling in a turbulent airstream that's been disturbed by the car in front. Overtaking becomes more difficult and the racing becomes less fun and compelling to watch.

The new machines need to help bring costs down too - in the aftermath of the global financial meltdown, there's not as much money going around to spend on things like racing, so the series is hoping to find a local American manufacturer that can bring entry costs down and encourage more teams to participate.

On top of that, the new designs are being evaluated on their safety, light weight, modern look, green credentials, sponsorship logo area and their ability to outperform the current generation's laptimes despite a drop from 3.5 liter engines to 2.0 liter engines. Quite an ask.

The DeltaWing solution

Through 2009, a group of IndyCar team owners collaborated on a secret project to develop a prototype racer for the next generation of cars. The team surfaced publicly in December last year, and yesterday revealed their radical proposal for the IndyCars of tomorrow.

The DeltaWing solution is a wild-looking machine that pushes the boundaries of what you'd call an 'open-wheeler' to concentrate on massive aerodynamic drag reduction.

For starters, the wheels are almost fully enclosed - as much a safety feature as a drag consideration, when you think about how close IndyCar racing can get and how often wheel entanglements can send one car or the other airborne.

The front of the car is incredibly narrow, the wheels only 24 inches apart leading a spaceship-style fuselage that swoops back toward the cockpit. The rear of the car becomes gradually wider toward the rear wheels, which are 70 inches apart, and the rear wing spoiler has been ditched in favor of a vertical tail fin, helping to stabilise the car and prevent high-speed spinouts. The vast majority of downforce is produced by the ground effect underbody, which sucks the car down onto the track while producing a negligible wake - trailing cars should find it much easier to overtake.

Crucially, the car will weigh only half of what the current generation IndyCar weighs, and will produce only half the aerodynamic drag. This means it should be able to reach similar top speeds, around 240mph (386kmh), but with substantially smaller engines and getting somewhere near double the fuel efficiency.

Teams should be able to buy the car, complete with engine, for around US$600,000 - and it will be manufactured in America by various parts suppliers and constructors, keeping transport costs to a minimum.

Dallara's competing design has already been shown - a fairly conservative reworking of the current IndyCar shape, but it's still going to be Italian-made, which will go down as a point against it as the IndyCar organisation considers proposals over the next few months.

The drivers seem to like the idea of it, and in addition to appearing to meet all the criteria, the DeltaWing is also the only one of the four entries to have produced a full-size demonstration model. So it's in with a good chance. We'd love to see one driven in anger - it's certainly the most radical and remarkable racecar shape we've seen proposed for a major code.


TOPICS: Culture/Society; News/Current Events
KEYWORDS: car; deltawing; indy; proposed
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To: camle; Dr. Bogus Pachysandra; Reaganesque
The vertical fin in the back gives it straight line stability but it will also resist turning. That's why they use them for land speed vehicles.

If you look closely at the front wheels and their openings you can clearly see there is no room for the wheels to turn. You couldn't even park in without putting dolly under the nose.

61 posted on 02/12/2010 7:32:03 AM PST by BubbaBasher ("Liberty will not long survive the total extinction of morals" - Sam Adams)
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To: Dr. Bogus Pachysandra

seems like a whole lotta work to stabilize the thing in turns, when if you put the narrow wheels in teh back ,adn the wide one on the front it would be inherently more stable without all that extra work.

as for sidecar races, I still don’t wanna be the guy in the sidecar;-)


62 posted on 02/12/2010 7:41:10 AM PST by camle (keep an open mind and someone will fill it full of something for you)
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To: Joe 6-pack
I like the 2+2 coupe version...

Yes, it does have a "Speed Racer-ish" appearance. It also reminds me of a toy I had back in the '70s - a flywheel-powered Kenner "SSP Racer". It was shaped a lot like this car.

63 posted on 02/12/2010 7:41:37 AM PST by Charles Martel ("Endeavor to persevere...")
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To: camle

I always wanted to be the guy in the sidecar!


64 posted on 02/12/2010 7:43:12 AM PST by Dr. Bogus Pachysandra ( Ya can't pick up a turd by the clean end!)
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To: BubbaBasher

I have no problem with straight line stability, but Indy cars run on an oval track don’t they? the main problem is stability in curves and corners. the more stability you have in corners and curves, the faster you can take them, the greater your overall speed.

put the drive wheels in the front, wide apart, and they will pull the vehicle around the corners rather than be at the mercy of centrifugal force.


65 posted on 02/12/2010 7:43:41 AM PST by camle (keep an open mind and someone will fill it full of something for you)
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To: Dr. Bogus Pachysandra

you do that (LOL~!) and I’ll watch;-)


66 posted on 02/12/2010 7:45:02 AM PST by camle (keep an open mind and someone will fill it full of something for you)
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To: The Free Engineer

It reminded me of that car too.....you and I are old to both remember that.....woohoo


67 posted on 02/12/2010 7:48:20 AM PST by Halgr (Once a Marine, always a Marine - Semper Fi)
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To: Petronski

Eventually they will all go the way of the hand crank, rumble seat, tail fin and distributor..................


68 posted on 02/12/2010 8:00:58 AM PST by Red Badger (Education makes people easy to lead, difficult to drive; easy to govern, but impossible to enslave.)
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To: Red Badger
So then your theory is that the spark plug's job will be finished at some point in the future.

Yet your little slogan there (or whatever) is that the spark plug's job is finished, as in complete now....which is not true.

69 posted on 02/12/2010 8:05:00 AM PST by Petronski (In Germany they came first for the Communists, And I didn't speak up because I wasn't a Communist...)
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To: Petronski
I don't think these are diesels.

Nope. They aren't. But this is:


70 posted on 02/12/2010 8:11:31 AM PST by B Knotts (Calvin Coolidge Republican)
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To: Reaganesque



71 posted on 02/12/2010 8:17:45 AM PST by Jeff Chandler (:: The government will do for health care what it did for real estate. ::)
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To: camle

I’m 64 now, so I think I’d have to pass. Used to race go-karts when they first came out. Most of the store-bought karts had sissy bars on each side of the seat. My Grandfather and I built mine. No sissy bars! I could lean over into a turn and put my helmet onto the track. Gave me a great advantage over the other racers! Very low COG, and a West Bend 580. Lots of fun!


72 posted on 02/12/2010 8:19:38 AM PST by Dr. Bogus Pachysandra ( Ya can't pick up a turd by the clean end!)
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To: Halgr

I only know it because I saw the car on display in a lobby at the GM tech center in Warren Michigan a few years ago.


73 posted on 02/12/2010 8:37:19 AM PST by The Free Engineer
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To: Chode; Betis70; bobby.223; brf1; cld51860; Cowboy Bob; Daffynition; darthxenu; devane617; ...
ping...
74 posted on 02/12/2010 8:49:52 AM PST by Chode (American Hedonist *DTOM* -ww- NO Pity for the LAZY)
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To: The Free Engineer
somewhere, i still have a windup toy car and launcher exactly like that but the colors are red and yellow...
75 posted on 02/12/2010 9:16:13 AM PST by Chode (American Hedonist *DTOM* -ww- NO Pity for the LAZY)
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To: Chode
I wish they would stop screwing around and just put wheels on this baby and be done with it.

Gotta build a bigger race track.

76 posted on 02/12/2010 9:24:50 AM PST by Cvengr (Adversity in life and death is inevitable. Thru faith in Christ, stress is optional.)
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To: Reaganesque

It must be a retro style,...I notice all those aerodynamic features in the body style they took from the aircraft industry just like in the 50s, big fins, air scoops like a jet air intake, even that phony cockpit,...like its really gonna go faster.....huh?


77 posted on 02/12/2010 9:28:07 AM PST by Cvengr (Adversity in life and death is inevitable. Thru faith in Christ, stress is optional.)
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To: Reaganesque
GM Firebird, ca. 1953:


78 posted on 02/12/2010 9:33:30 AM PST by Erasmus (Buffalo: "I never met an Indian I didn't like, with the possible exception of Deepak Chopra.")
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To: Dr. Bogus Pachysandra

hoo boigh! I bet you had lots of fun. they call them ‘sissy bars’ fer a reason;-)


79 posted on 02/12/2010 9:42:32 AM PST by camle (keep an open mind and someone will fill it full of something for you)
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To: BubbaBasher
If you look closely at the front wheels and their openings you can clearly see there is no room for the wheels to turn.

The wheels do not need to pivot. The car steers by left-right differential braking.

Ummm, ≤}B^)

80 posted on 02/12/2010 9:47:47 AM PST by Erasmus (Buffalo: "I never met an Indian I didn't like, with the possible exception of Deepak Chopra.")
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