Quote:
Originally Posted by Cd
( What was the Cd of the Epcot 2003 ? , and also, what are the protrusions on the top and bottom of the Sunraycer for ? I'd suspect stability, but I wonder if it was sort of a diffuser on the bottom as well. )
|
Cd,I'll have to dig for the Epcot number but I'm pretty sure I've got it.Shooting from the hip I'm remembering around 0.20.One feature I remember from GM's exhibit at Epcot,was that an active rear valence dropped at speed,allowing for a proper diffuser angle without sacrificing ground clearance in town.---------With the respect to the Sunraycer,a safety requirement for the Trans-Australian Solar Challenge,was that the cars could survive buffeting from the triple-trailer trucks which would also share the road with the solar racers.----------------- The "strakes" were added to to the back of Sunraycer,which was prone to lifting off and swapping ends,to help directional stability without shading the PV array.Dr.Morrelli also moved the "vertical stabilizer" of the CNR "banana car" underneath and behind the rear wheels.---------------------- There are also two structures on the roof,behind the "cabin"that might have spoiled side gusts at the center-of-lift,although I don't remember a discussion about them.Anyone?