Vortex generators

[aerohead]

Originally Posted by cyclopathic

I am not sure starting when but hycam and hy Avalon have little tabs under rear bumper. Prius C has 2 tabs on tail lights and one on mirror.

A lot of these are added after time in an anechoic wind tunnel,where wind noise was discovered.The tab changes the resonant frequency of the part,killing the noise,and very little is spent on tooling modifications to mass produce this change.
The EPA has stringent noise criteria for cars.Even tires.

[ConnClark]

Originally Posted by aerohead

A lot of these are added after time in an anechoic wind tunnel,where wind noise was discovered.The tab changes the resonant frequency of the part,killing the noise,and very little is spent on tooling modifications to mass produce this change.
The EPA has stringent noise criteria for cars.Even tires.

One should note that noise takes energy to create

[cyclopathic]

Originally Posted by aerohead

A lot of these are added after time in an anechoic wind tunnel,where wind noise was discovered.The tab changes the resonant frequency of the part,killing the noise,and very little is spent on tooling modifications to mass produce this change.
The EPA has stringent noise criteria for cars.Even tires.

Regular Camry has Cd .28 and hybrid .27:
2016 Toyota Camry Hybrid LE Specs, Options, Features, and Dimensions | Car.com
2016 Toyota Camry LE Specs, Options, Features, and Dimensions | Car.com