[winkosmosis]

Originally Posted by Frank Lee

Separation at the FRONT of the hood! NOT where the bubble is.

The inclination of the engine hood also has an effect upon the drag. Fig 5.4, afterCarr, gives an example of this. Once the slope is steep enough to keep the flow attached, further sloping does not reduce drag any further. The ‘optimum’ slope angleF depending upon the leading edge radius and on the windscreen rake.