Quote:
Originally Posted by JulianEdgar
Why would I try to find the exceptions? Most fastbacks generate more lift than squarebacks and notchbacks.
Yes, but why would I try to find these exceptions rather than using as examples those which are most common?
This is a difference that you have just invented. Attached flow is attached flow, whether it is caused by downwash or not. I have already quoted the head of Jaguar aero in support of that, but as always, you believe that you are right and the true experts are wrong.
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1) Dimensional analysis of a non-separated flow fastback would provide a reference datum from which to ponder what a subtle difference in architecture can mean to aerodynamic performance.
2) ditto
3) downwash is not attached flow. It is symptomatic of flow separation. You'll get the highest drag, vortex-drag, plus a small, but very low pressure wake, and overall higher drag. To say otherwise is delusional. It may look like a duck, but it doesn't quack like a duck.
4) If your experts are saying otherwise, then they ARE wrong.