Tim Jordan wrote:
>
> Tigers,
> What does NACA and NASA refer to with respect to the Tiger hoods? I have
> heard the terms used regarding Mach 1 hoods.
> Of course we know about the "Space Agency", but I'm not positive on the
> actual meaning of the letters when referencing car hoods.
***************************
Tim,
The Space Agency was formed from the old NACA. I think NACA stands for
National Aeronautics and Civil Aviation. Anyhow, the duct design was
the result of NACA research. Conventional air ducts become ineffective
at high speeds because a boundary layer of air covers the opening and
restricts/prevents air flow. The NACA approach was to put a slot in the
surface that the air was flowing over and shape it so that the air would
'curl' into the slot. A properly-shaped slot looks something like the
cross section of the top half of a Coke bottle. Pointey end toward the
direction of travel for an inlet. I guess that if you put the pointey
end the other way you'd have an outlet. The LAT outlet ducts should
function something like an NACA duct, so I guess that you could call
them such. I would question whether the they were inspired by the
original NACA design or not.
B382001570 - Will - wseay@sprynet.com
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