It’s not often that golf and cars cross paths, with the exception of some terminology – ‘driver’ for example! However, in honour of the Ryder Cup we are taking a look at how cars and golf balls could be interlinked more closely.
A recent study has found that manufacturing cars using dimpled material may improve fuel efficiency. Dimpled surfaces, like those found on golf balls, can dramatically increase the distance of travel because the drag caused by air resistance is cut in half thanks to the irregular surface. A dimpled surface holds the airflow closer for longer, reducing the turbulent air behind the ball.
In the 1800’s golf balls were smooth and became dimpled over time due to impact. Smooth new balls were often used during tournaments and important matches but apparently this all changed when a player ran short and used a dented one instead. Low and behold, he discovered the old one travelled much further than the new!
However, this gets slightly complicated. When a golf ball is travelling at a low speed it is true that drag is reduced but when it is travelling extremely fast, the opposite is true. If we scale this up to automobiles, it could be concluded that dimpled textures would be highly beneficial in low speed urban driving but less so on dual carriageways or motorways.
How do we overcome this? Well, scientists are currently investigating a ‘morphable’ surface. This would involve a stiff outer skin encasing a soft interior. When the inside pressure drops, the outer skin shrinks, creating a dimpled surface. It is the same principle as a grape becoming a raisin.
Watch this space for more news on this interesting technology, which could make driving less of a drag!