In recent solar car news, we have now seen new car reveals from several teams. The latest ones are shown above (click to zoom). Promised new car reveals include Vattenfall: 16 July, Michigan: 19 July, Stanford: 21 July, Aachen: 22 July, WSU: 7 August, Durham: 12 August, Cambridge: 15 August, EcoPhoton: some time in August, and JU: 30 August. I will continue updating my list of teams as news and pictures come in.
FSGP 2019 team photo – L to R from front: Kentucky, Illini, Esteban (Poly Montréal), W Mich / Florida, Principia, Calgary, SIUE / Northwestern, UPRM, Illinois St, Ga Tech / NCSU, Berkeley (CalSol), Mich St, Waterloo / NJIT, with Rutgers absent (credit)
Meanwhile, 18 teams – Kentucky, Florida, CalSol (1st in 2017), Northwestern, Mich St, Illinois St, Illini, Waterloo, Principia, Ga Tech, Esteban (3rd in 2017), SIUE, Calgary, Rutgers, NJIT, NCSU, W Mich, and UPRM – raced at FSGP 2019 on 1–6 July. Final results were as below (click to zoom):
The FSGP regulations give the score for multi-occupant vehicles (MOV) as S = (D / E) × C × T, where S is the total score, D is the Total Person-Mile Distance, E is the Total External Energy usage of the solar car, C is the Completion Factor, and T is the Target Speed Derate.
The chart below (click to zoom) visualises these scores on a logarithmic axis, with six coloured bars being components of the score, and the seventh coloured bar S being the product (and therefore the sum of the logarithms) of those components. The six components are:
- d, the total miles driven
- d′, the total miles driven with penalties
- p, the average number of persons in the car (and so D = d × p)
- E, the total external energy usage (as in the regulations)
- T, the target speed derate, which penalises cars slower than 27 mph (as in the regulations)
- h, a grey bar (the same for every team) showing the highest driving distance of any MOV entry (and so C = d′ / h)
This version of the formula, S = d × d′ × p × (1/E) × T × (1/h), makes it clear that the distance driven is essentially being squared, and hence dominates the other factors:
It’s also worth mentioning the lap speed record that was set on the COTA track: