As a result of his racing activity, he became interested in automobile stability and control and the potential for applications of aircraft technology. Under the sponsorship of General Motors, vehicle dynamics activity at CAL developed and substantiated the automobile dynamic equations of motion and developed the first variable stability (servo-controlled) cars. The first six-component tire testing machine was developed, leading to TIRF, the original high-speed, flat-belt tire tester in 1970. TIRF is still one of the most advanced tire testing machines in the world.
What we will discuss today is the construction and the use of a Yaw Moment Diagram, with a procedure which is, somehow, an extension of what I used for the steady state cornering simulation.
Before going into details about it, I want to state clearly here that I am no long time expert about Yaw Moment Diagrams or Milliken Moments method in general. There are people out there who know about them much more and much deeper than me (beside, of course, Mr Milliken) and who used them to setup and developed race car already since long. It would be actually cool if some of these guys would want to comment what I am writing here. So if you know any of them, please share this link!
Yaw Moment Diagrams are anyway such an interesting topic (and, potentially, a useful tool) that I could not stop myself from trying to develop a usable Excel tool to plot them and extract some usable results/metrics, in order to describe car/model behavior and cornering performances.
Beside the chance to use this tool also for vehicle modeling, it was also a very interesting exercise: I learnt a lot both during the building process and finally also using the tool for some basic simulation.
Race Car Vehicle Dynamics Workbook
L. Daniel Metz, William F. & Douglas L. Milliken
(Discontinued) Companion to Race Car Vehicle Dynamics, the workbook provides vehicle dynamics questions to further the reader's understanding through hands-on calculations. 60 pages.