flyrotary@lancaironline.net Mailing List Archive

Hi Finn: I am amazed with all your skills and efforts to contribute to the "perfect" velocity stack.

This is my carbonfiber braided version 😅🙈

LeRoux

From: Rotary motors in aircraft <flyrotary@lancaironline.net> on behalf of Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net>
Sent: Thursday, September 19, 2019 6:48 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Inlet Horns

So you think it's more important to have a 1.18" (pipe/runner ID) spacing between bell mouth and plenum wall than maximizing runner length?

I guess should put a plexiglass lid on top of the plenum, put a vacuum cleaner on the pipe and have a source of smoke for the plenum inlet and have a look at the flow pattern around the bell mouth as I move it towards/from the plenum wall.

Finn
(Printing it with bell mouth up now, hoping it won't collapse or sag).

On 9/19/2019 11:40 AM, lehanover lehanover@aol.com wrote:

I think runner length is less important than bell shape

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