Neil,
Here are a couple of pictures that one can contemplate. Notice how long the tails are on these streamlined vehicles?
Craig Vetter streamliner
Burt Monroe Bonneville Salt Flats Streamliner
Now imagine your design similar to these, except you truncate the tail in a place you are comfortable with.
Our vehicles are slower speed types than Burt's shown above, therefore our tails can close a little more sharply, similar to Craig's above.
Quote:
Originally Posted by NeilBlanchard
... and 4 degrees or less on the bottom
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Neil, how did you arrive at the 4° limit on the bottom?
Jim.