I
think, for a pusher, the NACA is the least draggy solution we know. I may
be wrong.
But one should take advantage of his list
of resources and really dig in
IMHO
There's too much untruth and incorrect / unproven theory buried in the
truth to make the exercise worthwhile
I am
refering to the references to the books of Kuchemann & Weber and Kays
& London. It is "hardcore" reading but at least some of it "seems to make
sense" even for the layman.
Remember
the inventors of the NACA-duct did recommend to NOT use it as a
pressure-recovery intake (what we need for our our car style
radiators)
Unfortunately they "look" rather sporty, so we fall
for them....
Also even
the P-51 style scoop doesn't do the best for efficiency. In one of the books
it is mentioned somewhere (IIRC), but there were one or two testships with
modified scoops (according to K&L I think....), which improved efficiency
over the last production system. However that one was good enough, so the new
one never made it to the masses and then WW2 was over and the jets on the
doorstep.
Once you
get really into aerodynamics concerning effiecient cooling, it starts to hurt
seeing people fight for cooling but having bad/inefficient
systems.
As
mentioned before, for me the road will be the fun, not so much the
destination, so when I get to it I will really enjoy doing lots of
experiments!
Don't hold
your breath though....:)
Now PL the
pope, made me look at these books (actually only parts of it...).
Also
remember (again...) these facts do not come from grumpy old man, but are facts
from respectable sources - he just pointed the finger in the right
direction.
# Earth round?? Obviously you never fell off the edge
yet!! Actually it has the shape of a trochoid!! - bet you
didn't know that!
I did say almost.
:)
Right!
Regards,
John
Saludos,
Thomas