Dec 13, 2013, 8:52 AM EDT
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.
Mar 31, 2015, 9:26 PM EDT
As bizarre as this is to read, Michael Bradley didn’t register a single helper for the States until 2011. In the Klinsmann era, he has 12.
Mar 31, 2015, 8:07 PM EDT
It was out of character for Altidore, who hadn’t received a red card for club or country since he was with AZ Alkmaar in 2012.
Mar 31, 2015, 7:17 PM EDT
With the deal Porto have turned another big profit. See this incredible list below, as the Portuguese club giants have made close to $423 million.
Mar 31, 2015, 6:20 PM EDT
It was a busy couple days for friendlies outside of the draw between Switzerland and the USMNT, with some MLSers doing work in the mix.
Mar 31, 2015, 5:27 PM EDT
Tottenham Hotspur could have new, improved digs as soon as the 2018-19 season, according to the BBC.
Mar 31, 2015, 4:38 PM EDT
Though Wayne Rooney had a series of good chances including a struck crossbar, it was the Tottenham man who beat Gianluigi Buffon to tie things up.
Mar 31, 2015, 3:47 PM EDT
What would the price tag be for the German star if he skipped Dortmund for Old Trafford?
Mar 31, 2015, 2:50 PM EDT
Here are three points and a bonus reminder from the Yanks’ final match until April 15 in Texas against Mexico.
Mar 31, 2015, 2:01 PM EDT
Another late goal denies the USMNT victory.
Mar 31, 2015, 1:07 PM EDT
Shea does his best Gareth Bale impression.
Mar 31, 2015, 12:49 PM EDT
Messi’s right foot is still giving him some bother.
Mar 31, 2015, 11:16 AM EDT
Klinsmann makes changes to team who lost to Denmark, switches up formation.
Mar 31, 2015, 10:56 AM EDT
Could Di Maria be on his way out of Old Trafford after just one season?
Mar 31, 2015, 10:02 AM EDT
Plenty of intriguing questions surrounding the USMNT picture ahead of Tuesday’s game against the Swiss.
Mar 31, 2015, 9:40 AM EDT
Top European teams will get extra revenue from Champions League, Europa League from next season.
Mar 31, 2015, 8:45 AM EDT
Three out of five ain’t bad, right?
Mar 31, 2015, 7:57 AM EDT
Messi tops list of forwards in Europe.
USMNT vs Switzerland preview: Last time they met, Michael Bradley scored the winner with a full head of hair
Mar 30, 2015, 11:07 PM EDT
Maurice Edu and Danny Szetela helped the goal get going, and Bradley was barely more than 20 years old.
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