Shark fins have the advantages of reducing air resistance, balancing the car body, maintaining signal strength and releasing static electricity.
its inventor is an Australian aircraft maintenance engineer. He was inspired by the maintenance of the aircraft and transplanted the spoiler on the aircraft to the car, which was successful and registered a patent. BMW was the first automobile brand to buy the patent of "shark fin", and then shark fin first appeared in the E65/E667 series operated by Bangor.
The antennas on cars are not necessarily in the shape of "shark fins", but there are other unique shapes. It's just that most of these car antennas with shells are shaped like shark dorsal fins, so most people still refer to them as "shark fins".
car design
Compared with ordinary antennas, the biggest advantage of "Shark Fin" antenna is to enhance communication signals. The signal receiving device of "Shark Fin" antenna is built-in, so its anti-interference ability is strong and its interference to radio waves is relatively small. Therefore, while improving the communication signal, it also enhances the stability of the communication signal.
Shark is an accessory to reduce air resistance. The faster the vehicle speed, the more it can divide the air flow, so that the resistance of the car becomes lower and lower. Sharks split the air flow and divided it into two equal parts. One part of the air flow passes through the left side and the other part passes through the right side, so that the balance of the car can be maximized.