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This paper describes the design process of a full aerodynamic package of a Formula SAE (FSAE) style race car. The meaning of a full aerodynamic package in this context is a front wing, a rear wing and a diffuser; the focus will however be on the wings. The vehicle for which the aerodynamic package is designed is the Chalmers Formula Student (CFS) 2012 FSAE car, but vehicle data logged from the CFS 2011 FSAE car was used during the design phase. This data was used to evaluate how the aerodynamic package will influence the behaviour of the vehicle, both in terms of lateral and longitudinal acceleration as well as fuel consumption, in order to determine whether or not an aerodynamic package can enhance the vehicle performance. The main tool used during the design process was numerical simulations (computational fluid dynamics, CFD) and special attention was paid to post-processing of these simulations.

Special conditions in a thermionic energy converter can be found, featuring unidirectional conduction in the backwards direction and very low work function and resisitivity. Such results have been reported on earlier (J. Appl. Phys. 70 (1992) 1489, Surface Sci. (1992)). The large back current and very low work function of the collector are attributed to the existence of Rydberg matter of cesium as a surface layer on the collector. Rydberg matter is an electronically excited form of matter, which has been predicted theoretically and recently reported on in several different experimental situations. We now proceed to study the plasma potential with a Langmuir probe and the collector temperature distribution in the open thermionic converter, with and without Rydberg matter present. The temperature results are that there is a very low temperature difference between the edge and the center of the collector in the Rydberg mode.