On 08/19/2012 10:41 PM, craig wrote:
> --> Europa-List message posted by: "craig"<craigb@onthenet.com.au>
>
> Frans, could you elaborate on the "correct length would be shorter" wouldn't
> the longer shallower transition
> Create less drag and thus make your longer fairing more efficient.
There is also something like skin drag. More surface creates more drag.
So there is an optimum somewhere: for a 2D fairing (like for a strut or
a wheel leg) the optimal width to length ratio would be 1:3.7, with the
widest point at about 30% of the length. For a 3D fairing things get a
bit more complicated. Shorter carries a higher penalty than longer, so
if in doubt just make it longer.
Frans
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