This is how the duct looks with the ramp installed. In my attemp to handle the air, I have extended the floor of the ramp back at 7 degrees until it reached the floor of the plenum. The final depth is 1.5 inches, which is twice the inlet size. This feed into the turning vanes and in the final air location, the cross section of the plenum will be four times the inlet size. My hope is to slow the air and reduce turbulence.

Another part of this design is that it keeps the air in a channel as it gets to the turning vanes.

1/28/2009   Picture 70