Quote:
Originally Posted by orengomotors
thank you! i understand it now.
so the nose has to be rounded?
the nissan delta wing nose is poorly designed?  |
Nissan had plans to run the Delta-Wing at the Indianapolis Motor Speedway.In the past,speeds as high as 235-mph have been attained there in the curves.
If the Delta Wing were going this fast,it would be approaching transonic flow,where the air begins to compress,and supersonic shockwaves can form on the body where extreme accelerations are present.
The boundary layer cannot pass through a shockwave,and this would alter the center-of-pressure on the car,destabilizing it for a high speed crash.
So the nose is more ogival,to deal with shockwave drag,something which actually hurts a low-speed racer.
A 'bulbous' nose is all you need for your velocity.It's not sexy,but the air loves them.Here is Bochum University's solar racer's nose.Very low drag!
