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.
Oct 25, 2014, 12:48 PM EDT
Pellegrini magnanimous in defeat, but City could be eight points off top spot by the end of the weekend.
Oct 25, 2014, 12:05 PM EDT
Reds thwarted by stubborn Tigers, as Balotelli fires a blank once again.
Oct 25, 2014, 12:04 PM EDT
West Brom won the shots battle 17-8 and carried nearly 70 percent of the possession by the time all was said and done.
Oct 25, 2014, 11:59 AM EDT
It was 1-0 at half, and it was all the Saints would need.
Oct 25, 2014, 11:58 AM EDT
Arsenal make the most of awful errors from Sunderland.
Oct 25, 2014, 11:41 AM EDT
Eighth-place Swans will host the suddenly-struggling Foxes as both teams look to rebuild momentum after good starts to the season.
Oct 25, 2014, 11:24 AM EDT
Follow El Clasico here with live updates, as Suarez starts with his four month ban over.
Oct 25, 2014, 11:02 AM EDT
Watch the second half of every match live, right here.
Oct 25, 2014, 10:51 AM EDT
Watch this hilarious video, as Brand gives Big Sam a smooch.
Oct 25, 2014, 9:50 AM EDT
Will Mario Balotelli score his first Premier League goal and get Liverpool going? Watch live, here.
Oct 25, 2014, 9:45 AM EDT
Hammers win third-straight PL game, as City’s bad week gets worse.
Oct 25, 2014, 9:29 AM EDT
Can the Gunners top Sunderland? Watch live.
Oct 25, 2014, 9:24 AM EDT
The Baggies are two points above the drop with 9 points, while Palace’s 8 points have them slightly less safe.
Oct 25, 2014, 9:22 AM EDT
Around this time last season, Stoke City goalkeeper Asmir Begovic scored a goal in the wind against Southampton.
Oct 25, 2014, 9:17 AM EDT
Before the tournament, we asked whether they’d roar, and so far the US women have done so.
Oct 25, 2014, 8:55 AM EDT
Van Gaal: “He’s very special but he is very special for me because we’ve continued our relationship.”
Oct 25, 2014, 8:25 AM EDT
Just what is going wrong at the back for Liverpool? Brendan Rodgers has a theory…
Oct 25, 2014, 7:33 AM EDT
Can West Ham upset Man City? Watch live, here.
Oct 25, 2014, 7:02 AM EDT
Where and how to watch every PL game during Week 9 live online or via the app.
Oct 24, 2014, 11:30 PM EDT
The midfielder is yet to make a Premier League start this season as rumors surfaced that he could return to Brazil on loan.
- Sunderland 0-2 Arsenal: Sanchez seals win after horrendous defending 0
- VIDEO: Russell Brand crashes Sam Allardyce’s presser with a huge kiss 2
- West Ham United 2-1 Manchester City: Hammers stun reigning champs 1
- WATCH: Premier League online via NBC Sports Live Extra – Week 9 0
- Chicago Fire 2-1 Houston Dynamo: Stoppage-time winner caps off Chicago comeback (VIDEO) 1
- Premier League Preview: Sunderland vs. Arsenal 0