|
|
Ed, and others -
Attached are some photos of the new scoop I'm building to replace my old new
scoop. As you can see the new one actually has less intake area, but
extends further in order to get outside of the boundary layer.
I don't want the intake any larger than it has to be, but I want to make
sure also that it is sufficient to allow for enough air flow. My old new
scoop did improve cooling, but as I found out, it was only marginal.
The new scoop, which is patterned after a P51 style scoop, not only gets
outside of the boundary layer air, but also excludes it, with the dam that
you see at the bottom. Well, actually it will be at the top, once it is
mounted under the belly. It also gives me an expansion area once inside the
scoop.
Using the program that Al sent me, the boundary area calculated out to about
1.625-1.75 inches +/- depending on speed.
The scoop intake measures 10.75" inside at the top (narrowest) and 14.75" at
the widest point average = 12.75"
Height of the inside of the scoop measures 4.25"
This should equal about 54.18 sq in of area.
The inside of the scoop sits exactly 2" from the bottom of the fuselage, and
overall height to the outside of the scoop is about 6.6" again, measured
from the fuselage bottom.
I haven't glassed the scoop yet, other than on one side to help with gluing
it together.
I am interested in any feedback concerning the size of the intake area.
Regards,
Steve Brooks
Cozy MKIV N75CZ
Turbo Rotary
|
|