X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf25aec.mail.bellsouth.net ([205.152.59.73] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 937270 for flyrotary@lancaironline.net; Mon, 09 May 2005 11:25:20 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.73; envelope-from=13brv3@bellsouth.net Received: from ibm71aec.bellsouth.net ([65.6.194.9]) by imf25aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050509152433.RVZV2545.imf25aec.mail.bellsouth.net@ibm71aec.bellsouth.net> for ; Mon, 9 May 2005 11:24:33 -0400 Received: from rd ([65.6.194.9]) by ibm71aec.bellsouth.net (InterMail vG.1.02.00.01 201-2136-104-101-20040929) with ESMTP id <20050509152432.ZDNT1909.ibm71aec.bellsouth.net@rd> for ; Mon, 9 May 2005 11:24:32 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: center rotor OFF Date: Mon, 9 May 2005 10:23:24 -0500 Message-ID: <001c01c554ab$381d1ce0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01C55481.4F4714E0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_001D_01C55481.4F4714E0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable > On a 3 rotor in economy cruise, would it be possible to completely > shut off the center rotor fuel injectors and just pump air? =20 I'm thinking this would not be a good plan. For the piston engines you referred to, I bet they have a way to control the valves with solenoids = so the deactivated pistons aren't producing compression. With the rotary, = I don't see any easy way to avoid the compression, which means you'd be = doing all the work of compressing air for nothing. I think that would defeat = the fuel savings goal. It also might be amazingly rough, but perhaps not = quite as bad as a two rotor running on one. =20 =20 Good thought though. New ideas are always interesting, and perhaps = there is a way to make it work. You could have that loping Harley sound too :-) =20 Cheers, Rusty (still fighting State Farm over the fence)=20 ------=_NextPart_000_001D_01C55481.4F4714E0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

> On a 3 rotor in economy cruise, would it be = possible to=20 completely
> shut off the center rotor fuel injectors and just = pump=20 air?

 
I'm = thinking this would=20 not be a good plan.  For the piston engines you referred to, I bet = they=20 have a way to control the valves with solenoids so the deactivated = pistons=20 aren't producing compression.   With the rotary, I don't see = any easy=20 way to avoid the compression, which means you'd be doing all the work of = compressing air for nothing.  I think that would defeat = the fuel=20 savings goal.  It also might be amazingly rough, but perhaps=20 not quite as bad as a two rotor running on=20 one.  
 
Good = thought=20 though.  New ideas are always interesting, and perhaps there = is a way=20 to make it work.  You could have that loping Harley sound = too=20 :-)
 
Cheers,
Rusty = (still fighting=20 State Farm over the fence) 



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