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Old 05-03-2020, 06:01 PM   #18 (permalink)
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Originally Posted by nemo View Post
Just some thought, Ideas and questions.

Pot for throttle on fly by wire cars.

Would engine load be a reliable indicator of drag?

Wouldn't you want to testing drag and downforce at the same time if your goal is FE. One can certainly create downforce at the cost of drag.
I thought of electronic throttle control (and diesel engine management, often with no throttle) when I was developing the idea. In both cases, the accelerator pedal position determines, for a given rpm, the torque output. So, no problem.

There is no need to test for downforce at the same time: either lift or downforce will cause induced drag, and so measuring drag already includes it.

Of course, you can choose to measure lift/downforce alone if you wish to, and that can be done quite accurately and fairly easily on the road.
Modifying the Aerodynamics of Your Road Car

A really good book that should be added to the library of everyone working in automotive aerodynamics, as well as those making car aero modifications at home. - Rob Palin, former Tesla aerodynamicist

Last edited by JulianEdgar; 05-03-2020 at 06:47 PM..
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