henry wrote: ↑27 Jan 2022, 11:18
Sorry, I’ve dragged this off topic. I’ll respond briefly to @Ryars examples out of politeness.
In both examples the energy reduction is about 20%. To do this with weight you need to lose 25% of the car mass. Remember the overall car mass includes driver and fuel which are fixed.
Thanks henry.
Just_a_fan wrote: ↑27 Jan 2022, 11:30
Ryar wrote: ↑27 Jan 2022, 10:49
How much speed can be reduced? What would be the difference in impact for a car crashing, that is travelling at 350+ kph and loses it on a monza straight Vs one that is going at 310 kph? To achieve a reduction of 40 kph, we are talking about shedding loads of BHPs. But how much would that contribute to reduction in impact?
Reducing the speed from 350km/h to 310km/h reduces the kinetic energy of the car - the energy the crash structures/barriers have to deal with - by c.22%.
I did the calculation and it's less than 20%. If the cars are reduced to 2013 levels of weight (reduce 150 kgs), that would result in similar reduction in impact. But then the cars would go even faster with the reduced weight @ current power levels. So on a balance, the cars can be reduced to 700 kgs (reduce 90 kgs) and think of decreasing some power. This is something they can target for 2026 with the removal of MGU-H (and not increasing electrical boost as planned). That would make cars similarly fast to what they are now, lesser crash impact and more agile. Win win.
Sorry for being offtopic. I would stop here.