X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [207.115.11.52] (HELO fmailhost01.isp.att.net) by logan.com (CommuniGate Pro SMTP 5.2.2) with ESMTP id 2893474 for flyrotary@lancaironline.net; Sun, 04 May 2008 20:27:30 -0400 Received-SPF: pass receiver=logan.com; client-ip=207.115.11.52; envelope-from=bobperk90658@bellsouth.net Received: from fwebmail07.isp.att.net ([204.127.218.107]) by isp.att.net (frfwmhc02) with SMTP id <20080505002649H0200r4vfae>; Mon, 5 May 2008 00:26:49 +0000 X-Originating-IP: [204.127.218.107] Received: from [74.249.210.245] by fwebmail07.isp.att.net; Mon, 05 May 2008 00:26:48 +0000 From: "Bob Perkinson" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Jet-A Date: Mon, 05 May 2008 00:26:48 +0000 Message-Id: <050520080026.21308.481E5448000889460000533C22230706129B0A02D2089B9A019C04040A0DBFC7059D0A9F0D010D@att.net> In-Reply-To: X-Mailer: AT&T Message Center Version 1 (Mar 10 2008) X-Authenticated-Sender: Ym9icGVyazlAYmVsbHNvdXRoLm5ldA== MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_21308_1209947208_0" --NextPart_Webmail_9m3u9jl4l_21308_1209947208_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Dave, no need to put yourself at risk, just bet one of them Marine pilots a beer he can’t do it and wait and see if he does. Bob Perkinson -------------- Original message from "David Leonard" : -------------- Ok, so who is brave enough to go out there and do it and tell us all what happens?? I might be willing to put in a couple gallons of jet-a into one of the tanks just to see what happens. I could program computer B to be more jet-a friendly. I assume that means lean and retarded timing. Anyone have any specifics? (ie. how lean should it be?) Dave Leonard On Sun, May 4, 2008 at 8:53 AM, wrote: I love that scientific talk. Mistral is working on the JetA for fuel idea. Since in normally aspirated trim the rotary is difficult to detonate, it is insensitive to a fuels octane rating. So if it already ran on jet A and motor fuel as well, it couldn't be affected by a misfueling situation. During W.W.II auto fuel tanks held coal oil, or kerosene. An add on little tank of gasoline was rigged up on the fire wall with some plumbing to switch between the two. The car would be started and warmed up on gasoline and then switched to coal oil for the trip to the defense plant. When the destination was in sight, the switch was made back to gasoline so the engine would start for the trip home. Even at 7:1 compression the engines would knock (detonate) and smoke, and timing changes may have been involved, but it worked. Fuel injection with its forced atomization, would make the transition even easier. Lynn e. Hanover In a message dated 5/4/2008 6:51:02 AM Pacific Daylight Time, eanderson@carolina.rr.com writes: OK, here's a question out of left field. A Lancair recently went down in AZ right after being refueled. On the Lancair list, the speculation is that it was fueled with Jet-A. I was curious, if this happened to a rotary, would it run (continue to produce power) on jet-a or would the engine quit? I speculate that due to the fuel pumps continuously circulating the fuel to the fuel rails and back to the tank, it probably wouldn't even start, but if it did, would it continue to run on the mix of jet-a and mogas? I guess it depends on the ratio of mogas to jet-a. Assuming that the fuel was almost 100% jet-A, would it still run? Ed, you've pretty much had everything happen to you that can possibly happen in an airplane, what-you-say? Mark S. Wondering what's for Dinner Tonight? Get new twists on family favorites at AOL Food. -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net --NextPart_Webmail_9m3u9jl4l_21308_1209947208_0 Content-Type: multipart/related; boundary="NextPart_Webmail_9m3u9jl4l_21308_1209947208_1" --NextPart_Webmail_9m3u9jl4l_21308_1209947208_1 Content-Type: text/html Content-Transfer-Encoding: 8bit

Dave, no need to put yourself at risk, just bet one of them Marine pilots a beer he can’t do it and wait and see if he does.

 

Bob Perkinson

-------------- Original message from "David Leonard" <wdleonard@gmail.com>: --------------

Ok, so who is brave enough to go out there and do it and tell us all what happens??

I might be willing to put in a couple gallons of jet-a into one of the tanks just to see what happens.  I could program computer B to be more jet-a friendly.  I assume that means lean and retarded timing.  Anyone have any specifics?  (ie. how lean should it be?)

Dave Leonard

On Sun, May 4, 2008 at 8:53 AM, <Lehanover@aol.com> wrote:
I love that scientific talk.
 
Mistral is working on the JetA for fuel idea. Since in normally aspirated trim the rotary is difficult to detonate, it is insensitive to a fuels octane rating. So if it already ran on jet A and motor fuel as well, it couldn't be affected by a misfueling situation.
 
During W.W.II auto fuel tanks held coal oil, or kerosene. An add on little tank of gasoline was rigged up on the fire wall with some plumbing to switch between the two. The car would be started and warmed up on gasoline and then switched to coal oil for the trip to the defense plant. When the destination was in sight, the switch was made back to gasoline so the engine would start for the trip home. Even at 7:1 compression the engines would knock (detonate) and smoke, and timing changes may have been involved, but it worked.
 
Fuel injection with its forced atomization, would make the transition even easier.
 
Lynn e. Hanover
 
 
 
In a message dated 5/4/2008 6:51:02 AM Pacific Daylight Time, eanderson@carolina.rr.com writes:
OK, here's a question out of left field.  A Lancair recently went down in AZ right after being refueled.  On the Lancair list, the speculation is that it was fueled with Jet-A.  I was curious, if this happened to a rotary, would it run (continue to produce power) on jet-a or would the engine quit?  I speculate that due to the fuel pumps continuously circulating the fuel to the fuel rails and back to the tank, it probably wouldn't even start, but if it did, would it continue to run on the mix of jet-a and mogas?   I guess it depends on the ratio of mogas to jet-a.  Assuming that the fuel was almost 100% jet-A, would it still run? 

Ed, you've pretty much had everything happen to you that can possibly happen in an airplane, what-you-say? 


Mark S.



Wondering what's for Dinner Tonight? Get new twists on family favorites at AOL Food.



--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
--NextPart_Webmail_9m3u9jl4l_21308_1209947208_1-- --NextPart_Webmail_9m3u9jl4l_21308_1209947208_0--