Subject: RE: Sreamliner question.
True, Neil. But another, not often discussed, advantage of his design is
that you have a predictable, defined point of separation. If the point of
separation moves around on the body it can cause instability (think
knuckleball).
Dale C
Dr Kamm studied this extensively and concluded that if it wasn't
possible to carry the streamlined body shape all the way to a point then
it was better to chop off the tail. I suppose he had some conclusions as
to where that tradeoff occurred but I don't have a copy of his paper so
I don't know any details; it was probably in German anyway.
Regards, Neil Tucson, AZ
Subject: RE: Sreamliner question.
Exactly, Mayf. If you use a curve with a radius that has a <7 degree
tangent to the LOCAL airstream, the airstream should stay "attached."
You're right too about trying to minimize "wetted area" to reduce
surface
drag.
Dale C.
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