QUOTE (alecc @ Nov 19 2009, 12:16)

I'm not an engineer, but coupling 5 engines in one car that uses all the limits, it sound too complex for me and to much things can go wrong in such solution.
Less restrictions - unfreezing the engine development under strict rules - fuel and horse power limit, that should be enough to encourage the makers. I think that taking some high-tech developed solutions from a 2-3 l 700 HP engine to the real world is a much less complex task, than making an 5 engine unit for a F1 car.
I was being a bit blue sky for sure - I was just trying to think of ways to get engine development and have it be affordable for the companies involved, and it would help if F1 engines had a lot more in common with a more normal engine. And if they had more in common, they would have power output more like 150hp, hence needing 5. Basically, F1 should start closing the gap between F1 engine tech and where car engines are going (small capacity, turbo, economical, lower revs (than F1)). IF F1 engine development was more usable in the real world, we might start to see some interesting innovations that could make a double diffuser type difference - obviously not for 2010 though.
Another thought - I reckon they can somehow direct exhaust gases more, to affect airflow more beneficially, in particular to reduce rear wing downforce at high speeds. It seems not quite arbitrary how they do it at the moment, but also not very well refined - probably being unfair there though.
Also, while you cannot have moveable aero parts, I wonder if that includes the driver themselves, or their helmet? Maybe helmets could have wings that the driver controls by moving their head. Or at least maybe they could give the driver a top fin, so they can balance out some of the forces on their heads from cornering speeds... If they had a big fin, and the helmet is so strong, maybe they could generate some extra cornering force... Then instead of their head being pushed to the outside when cornering, its pushed to the inside by aero... I am sure it would be banned on safety grounds, but it would be amusing to see if it could generate a significant benefit. I guess maybe the same thing for their gloves - fit them with deflectors, to modify the airflow..
Also I wonder if airflow around the inside of the cockpit matters? You know how when people go kayaking, they have those sort of covers, to stop water getting in - maybe an F1 cockpit could have a similar thing, to prevent turbulence inside the cockpit upsetting the airflow over the body? Even hotter though...
Hmm - the ideal helmet aerodynamically might be some sort of large Darth Vader thing, with such a big flange in front that covers the cockpit and a shark fin and a miniature rear wing - better for aero, if not safety...
Sadly, I think the most significant development for 2010 will be the one that gives the best predictions for when people will pit, and gives a driver the best chance of not rejoining behind a car on old tyres for lots of laps. Modelling the race better could be a killer difference in 2010 - watch for the team that always seems to be lucky with their stops, and come out in clear air - there is a software DD behind it...