The Porsche Cayman GT4 Has Dimples Like A Golf Ball!
241 893
8.1
Engineering Explained3.94 млн
Следующее
23.05.21 – 77 3234:57Популярные
77 дней – 160 7911:00
119 дней – 1 533 3991:00Опубликовано 19 мая 2021, 14:00
2021 Porsche 718 Cayman GT4 vs 718 Cayman GTS 4.0 - Aerodynamic Comparison!
Thanks to Mobil 1 for sponsoring a portion of this video!
Subscribe to Engineering Explained for more videos! - goo.gl/VZstk7
Recommended Books & Car Products - amzn.to/2BrekJm
EE Shirts! - bit.ly/2BHsiuo
The Porsche Cayman GT4 and GTS 4.0 both feature a naturally aspirated flat-six cylinder engine. They both have PDK and manual transmissions offered. And in this case, they're both the same shade of blue. But there are actually dramatic differences in terms of how these cars perform, much of which might be overlooked by the naked eye. The aerodynamics of the GT4 are all about downforce, while the GTS 4.0 is all about minimizing lift. The GT4 has an upgraded chassis, suspension, wheels, tires, engine tune, and many aerodynamic changes to maximized downforce and minimize drag. Part of the solution? A dimpled underside, similar to that used on a golf ball!
On a golf ball, these little dimples cause turbulence, meaning little pockets of swirling air, so instead of a laminar boundary layer, you have a turbulent boundary layer. In this case, the turbulent boundary layer stays attached to the golf ball longer, wrapping around the ball, meaning the wake behind the golf ball is smaller when the airflow detaches from the golf ball, and a lower pressure region forms. With a smaller wake, the ball has less drag, and thus can travel farther. Porsche says the same logic applies to the GT4, in their words: “At the front end, the special surface on its underside is dimpled, reminiscent of that of a golf ball. As a result, the airflow follows the contour more precisely, reducing drag.”
Engineering Explained is a participant in the Amazon Influencer Program.
Don't forget to check out my other pages below!
Instagram: instagram.com/engineeringexpla...
Facebook: facebook.com/engineeringexplai...
Twitter: twitter.com/jasonfenske13
EE Extra: youtube.com/channel/UCsrY4q8xG...
Thanks to Mobil 1 for sponsoring a portion of this video!
Subscribe to Engineering Explained for more videos! - goo.gl/VZstk7
Recommended Books & Car Products - amzn.to/2BrekJm
EE Shirts! - bit.ly/2BHsiuo
The Porsche Cayman GT4 and GTS 4.0 both feature a naturally aspirated flat-six cylinder engine. They both have PDK and manual transmissions offered. And in this case, they're both the same shade of blue. But there are actually dramatic differences in terms of how these cars perform, much of which might be overlooked by the naked eye. The aerodynamics of the GT4 are all about downforce, while the GTS 4.0 is all about minimizing lift. The GT4 has an upgraded chassis, suspension, wheels, tires, engine tune, and many aerodynamic changes to maximized downforce and minimize drag. Part of the solution? A dimpled underside, similar to that used on a golf ball!
On a golf ball, these little dimples cause turbulence, meaning little pockets of swirling air, so instead of a laminar boundary layer, you have a turbulent boundary layer. In this case, the turbulent boundary layer stays attached to the golf ball longer, wrapping around the ball, meaning the wake behind the golf ball is smaller when the airflow detaches from the golf ball, and a lower pressure region forms. With a smaller wake, the ball has less drag, and thus can travel farther. Porsche says the same logic applies to the GT4, in their words: “At the front end, the special surface on its underside is dimpled, reminiscent of that of a golf ball. As a result, the airflow follows the contour more precisely, reducing drag.”
Engineering Explained is a participant in the Amazon Influencer Program.
Don't forget to check out my other pages below!
Instagram: instagram.com/engineeringexpla...
Facebook: facebook.com/engineeringexplai...
Twitter: twitter.com/jasonfenske13
EE Extra: youtube.com/channel/UCsrY4q8xG...
Свежие видео
5 дней – 222 61716:45
6 дней – 1 223 8891:00
20 дней – 1 315 76817:03
22 дня – 78 1660:46
23 дня – 246 3985:05
30 дней – 585 43513:20Случайные видео
154 дня – 564 22613:55
315 дней – 104 3205:37
26.08.23 – 171 61019:08
05.06.23 – 1 786 29616:28
16.08.22 – 35 9893:14
20.11.20 – 120 3765:07
2 дня – 54 42929:55
6 дней – 66 4300:36
8 дней – 67 77210:42
9 дней – 1 8806:50
10 дней – 169 8430:59
10 дней – 100 28917:21
12 дней – 56 9985:35
4 дня – 244 90414:46
5 дней – 60 05610:59