Quote:
Originally Posted by aerohead
...Hucho have all warned about limited results from drag reduction if the engine could not be maintained at a constant load to maintain BSFC.
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That could well be it.
And maybe it's possible I just haven't done the "drag reduction" part of the equation properly, and the tail isn't optimal.
Mulling over the disappointing results, when I look back at the amount of turbulence that tuft testing revealed on the sides of the tail (see
my long Civic build thread for details, starting at #226) I wonder if most of the side of the tail is just sitting in turbulence & separation, contributing little to drag reduction.
Yesterday I was ready to call it a day and consign this experiment to the recycling bin. But I've had a change of heart: the tail will get some surgery to relax the side angles, plus a smallish spoiler on the top surface. And I'll re-test to see if it makes any difference.
I'll also post back with details (numbers, graph) of the first test later today.