So,  Anyone know where to get some stainless steel wool or ceramic wool?

I'm

starting to think up a design for a tangential muffler which

incorporates a

packed muffler. We generally don't have too much room, so it behooves us

to

come up with an effective compact design. I have some ideas----

A tangential muffler with a body about 6" in dia, with a cone  section

on one

end. Inside the cone would be another with about 1" of space packed with

some

sort of wool- SS or ceramic. The inner cone would be drilled with a

bunch of

holes. After the holes are drilled, a rod is stuck into the holes and

bent

into the direction that the exhaust flows from, inorder to make the hole

into

a small scoop. The cone narrows down into about 3 inches in dia. which
connects to your exhaust pipe. Worth a try. I'm going to give it a try.
Brian Trubee
Redmond, Wa

Jeff Spitzer wrote:

You may not want the exit from a tangential muffler to be axial on the end
because it causes the swirling flow to accelerate (conservation of angular
momentum) leading to high frictional losses, excess back pressure and maybe
even sonic choking of the exit.  This is especially true with a cone.
Tangential mufflers should have radial or tangential exits.

Jeff Spitzer

 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org