Quote:
Originally Posted by orengomotors
ok, so 3.92 it will be!
and the body shape?
whats the optimal body shape for this car?
the subsonic land speed record cars are a good inspiration?
why are those cars so long? the optimal shape of 3.92:1 is shorter.
i'm imagining a car like that but with open wheels. what do you think? |
Bonneville cars attempt to minimize frontal area as much as possible,so the mechanical layout packaging ends up more 'linear'.Weight is not and issue,they need all the traction they can get so as to prevent wheelspin at high speed which could cause a lethal spin and takeoff.Which leads to the very long wheelbases.
The pointed nose is for transonic speeds,above 250-mph,where shockwaves can form on the body which block the boundary layer,leading to alterations in the center of pressure,which can make the car very unstable.Deadly.
None of these nose shapes would be good for you.A bulbous nose would actually be perfect for you at the speeds you'll be encountering.A piece of convex hemisphere would be fine.Here are some airship hulls,they all use bulbous noses
Here are some submarine hulls,all have bulbous nose.
Then clean up all your suspension parts.
After that,compact the frame as close as you can tolerate in the race to minimize frontal area,then do as much boat tail as you can.
If you can enclose the fuselage of the car,this Cambridge University CUER solar racer body would be an okay way to go.(Cd 0.10)
For reduced frontal area and enclosed car,do the 'red' body
For an open cockpit do the blue
