Dec 13, 2013, 8:52 AM EST
After our extensive research it seems as though we can at least guarantee one thing at the 2014 World Cup in Brazil… a better soccer ball to play with.
Cast your minds back to the 2010 World Cup and the debacle that was the Jabulani ball which swerved and dipped all over the place to resemble a beach ball, rather than the ball of choice for the worlds most prestigious soccer tournament.
But fear not, the Brazuca — which was unveiled by FIFA last week before the 2014 World Cup draw — won’t be a distant relative to the Jabualni. It will be, well, more normal. I’m sure goalkeepers of all 32 nations who’ve qualified are now breathing a huge sigh of relief.
For all the details on the new ball, we share with you the incredible in-depth study from Ben Popken for the Consumer News at NBC Business. Ben takes up the story as a Japanese University and NASA break down the science behind the ball, which will be kicked around to either crush or ignite the dreams of billions of soccer fans across the globe next summer.
Over to you, Ben.
The Jabulani curse is lifted.
Any knuckleballs at the 2014 World Cup should be mostly intentional, according to new independent wind tunnel results by Japanese university researchers.
The researcher’s data shows the new Adidas-designed Brazuca matchball for the 2014 World Cup is less likely to swerve at goal strike speeds, meaning there shouldn’t be a repeat of the maddeningly erratic balls at the 2010 World Cup. During those games, goalkeepers and outfield players alike accused the Jabulani matchball, with its glossier texture, asymmetrical panels, and shorter panel bonds, for voodoo shots and an early tournament goal drought.
At the University of Tsukuba in Japan, sports engineering researchers mounted soccerballs in a wind tunnel, blasted them with air, and measured what happened.
Now, in aerodynamics, for every surface there’s an airspeed at which the air flowing over it switches from smooth to turbulent, what’s called the “critical Reynolds number,” and can lead to the sudden veering in flight known as “knuckle-ball.” But in the tests the Jabulani’s occurred at higher speeds than the mid-30’s mph seen on older balls.
In fact, it happened at 53 mph, right in the 50-60 mph range professional goal strikes and corners start at.
That could explain a few things that happened in South Africa.
This time around, those strikes should power through the knuckle-ball effect. In the wind tunnel tests, the Brazuca’s critical Reynolds number occurred at 38 mph.
Those results are more comparable to the Tango 12 ball, itself a player favorite and one of the balls on which Adidas based the design for the Brazuca.
“The asymmetry of ball panel location is one of the reasons to produce knuckling effect,” said Dr. Takeshi Asai of the University of Tsukuba’s Institute of Health and Sports Science. “Ordinarily, the asymmetry of ball panel increases, as the ball panel number decreases.”
That means the Brazuca’s six interlocking boomerang panels, fewer than the Jabulani’s eight, both of which are fewer than the classic 32 pentagon and hexagon panels, could normally pose a problem.
“However, the total distance of the panel bonds or seams of the Brazuca is longer than that of Jabulani,” said Aasai, 10.89 feet worth compared to the Jabulani’s 6.49. “Therefore, I think the strength of the knuckling effect may be slightly lower than that of Jabulani.”
A NASA researcher agrees.
Rabi Mehta, Branch Chief at NASA Ames Research Center and an aerodynamics expert who previously evaluated the Jabulani, has examined close up photos of the new ball. He thinks the Brazuca will gain stability over the Jabulani from its longer seams, identical interlocking panels, and a surface that features a slightly raised texture similar to a basketball’s.
“My theory is that the effective roughness compared to the previous ball is increased, which means the speed at which it knuckles is lower,” said Mehta.
That’s good news for Adidas, which has spent years making sure the Brazuca isn’t Jabulani part 2. They kicked the ball over and over with a robot leg and measured its flight, interviewed hundreds of professional players, a third of which were non-Adidas sponsored, and even snuck the Brazuca in as the matchball for the U20 World Cup.
“While we can’t comment on independent research, we can say that Brazuca is our most tested ball ever,” said Adidas spokeswoman Lauren Lamkin. “We conducted two-and-a-half years of testing in 10 countries across three continents involving more than 600 players and 26 teams to ensure that Brazuca exceeds all performance standards.”
However, she said, “It is correct that the seam geometry aids in flight stabilization.”
Hopefully, all this science leads to surer shots and more exciting gameplay in Brazil come this June. If not, at least it will be harder to blame the ball for it.
Jan 26, 2015, 8:22 PM EST
3-4 months on the sidelines means a massive hole to fill to start the 2015 season.
Jan 26, 2015, 7:10 PM EST
After two more places in the knockout rounds were booked on Tuesday, half the quarterfinal matchups are set.
Jan 26, 2015, 6:15 PM EST
Half the current USMNT roster was built with the Gold Cup in mind, while the other half is about next year’s Olympics. So, who’s who, then?
Jan 26, 2015, 4:05 PM EST
After eight months without a club, Juan Agudelo is reportedly returning to the place he should have been all along: MLS.
Jan 26, 2015, 2:59 PM EST
As the soccer world will no longer see the maverick skills of the Argentine playmaker, here’s a look at some of his best moments.
Jan 26, 2015, 2:38 PM EST
Here’s the draw for the last 16 of the FA Cup, as PL big boys get more tough tests.
Jan 26, 2015, 1:57 PM EST
Van Praag announces his intentions to run against Blatter, says he has the backing of five federations.
Jan 26, 2015, 1:00 PM EST
Betting on five underdogs away from home in the FA Cup will win you serious cash.
Jan 26, 2015, 12:32 PM EST
Fagundez explains why he couldn’t wait any longer to select his national team.
Jan 26, 2015, 12:00 PM EST
If Wolfsburg can agree a fee for Schurrle, should he leave Stamford Bridge?
Jan 26, 2015, 11:26 AM EST
Carver will take charge for the final 16 games of the season… but what then?
Jan 26, 2015, 9:55 AM EST
Red Bulls attacker heading to Abu Dhabi?
Jan 26, 2015, 9:20 AM EST
The signing of two Venezuelan youngsters could put Real in plenty of trouble with FIFA, as Barcelona-esque transfer ban could be on the cards.
Jan 26, 2015, 8:34 AM EST
The Koreans will face either Australia or the UAE in Saturday’s final in Sydney.
Jan 26, 2015, 8:00 AM EST
All the latest gossip, right here.
Jan 25, 2015, 11:33 PM EST
“I am concerned, not because of Chelsea but because we didn’t score in our last two home games,” Pellegrini said.
Jan 25, 2015, 10:50 PM EST
The 33-year-old Cameroonian striker joins a Sampdoria side currently tied for third in the table with 34 points.
Jan 25, 2015, 10:13 PM EST
“If he’s not ready for Tuesday then he’ll be back, for sure, against West Ham next weekend,” Rodgers said.
Jan 25, 2015, 9:22 PM EST
Maloney turned 32 on Saturday and will be unveiled by Chicago on Monday.
Jan 25, 2015, 8:31 PM EST
Sepp Blatter: Kind of like “The Godfather”. But let’s be clear, we’re talking “The Godfather: Part III”.
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