FRIC just means FRONT-REAR-INTER-CONNECTED. It used hydraulic accumulators connecting all four corners of the car to help stabilize it, improving both mechanical and aerodynamic performance. The FIA issued a technical directive sometime in mid 2014 that FRIC constituted a breach of the regulations because it helped with the aerodynamics of the car.Big Mangalhit wrote: ↑Wed Mar 14, 2018 12:15 pm100% in agreement with this, put it's nice to be precise when talking here like you just were. I would not be this pedantic if this was not the thousand time I see stuff like "Ferrari asked FIA to ban the FRIC". Because this sort of shared imprecise knowledge creates a lot of false information.
I am pretty sure though that due to the complexity of it, Mercedes was still able to run it till the end of the season. In 2015, Mercedes continued experimenting and using hydraulic accumulators for their suspension. This is what has then become "trick suspension" (no fancy word). Most of this tech was again "banned" for 2017, though banning is a strong word. Mercedes at the beginning of 2017 was still confident that their system was legal, but didn't want to risk using it because a formal protest after a race could mean that Mercedes could lose its points and then face having to change the car. The trick suspension also came at a weight disadvantage too.
Still, Mercedes are still using hydraulic accumulators (or were in 2017 at least) to control their suspension, especially ride height between QF and the race. The system goes through the gearbox I think and therefore uses the heat there to control the pressure. There was a report about this mid last year when it was said that Force India was using something similar, but their system relied on changing the fluids before the race (and pre-heating it to get the necessary pressure that they wanted). That system, more primitive than the one Mercedes uses, was easier to ban/clarify. From what I understood, Mercedes system never got banned or prohibited because there is definite lack of insight on how it works exactly and because it's all inside the gearbox housing, I guess it's not something that can be checked or seen easily.
So I guess there are various stages of FRIC and where that tech led to. I suppose most here just still use the term because it's easy and most people know what's being talked about. And the later iterative incarnations of the same tech don't have any fancy words to describe it other than "trick suspension".