X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 22 Jul 2012 04:20:01 -0400 Message-ID: X-Original-Return-Path: Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122] verified) by logan.com (CommuniGate Pro SMTP 6.0c1) with ESMTP id 5671713 for lml@lancaironline.net; Sat, 21 Jul 2012 15:29:36 -0400 Received-SPF: none receiver=logan.com; client-ip=71.74.56.122; envelope-from=Wolfgang@MiCom.net X-Original-Return-Path: X-Authority-Analysis: v=2.0 cv=IOWA+3TG c=1 sm=0 a=MHZY6FYWMEQOp7S43i2QIw==:17 a=3Zlka_XeuxsA:10 a=ttCsPuSJ-FAA:10 a=rTjvlri0AAAA:8 a=3oc9M9_CAAAA:8 a=Ia-xEzejAAAA:8 a=MJLqYVFHXZgU-Z06n3IA:9 a=wPNLvfGTeEIA:10 a=U8Ie8EnqySEA:10 a=EzXvWhQp4_cA:10 a=6HaupEWq3y7sweyMTyUA:9 a=_W_S_7VecoQA:10 a=MHZY6FYWMEQOp7S43i2QIw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.218.201.50 Received: from [74.218.201.50] ([74.218.201.50:1089] helo=lobo) by hrndva-oedge02.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 03/23-02978-CF20B005; Sat, 21 Jul 2012 19:29:00 +0000 X-Original-Message-ID: <004f01cd6777$13a60930$6701a8c0@lobo> From: "Wolfgang" X-Original-To: References: Subject: Re: New Turbine Engine X-Original-Date: Sat, 21 Jul 2012 15:28:58 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004C_01CD6755.8C5404D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_004C_01CD6755.8C5404D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable What's there to disagree with ? At 10 gph more that's 180 lbs more in take off weight for a 3 hour = flight. A piston engine consumes about 0.5 lbs/hp/hr That turbine is just over 0.8 lbs/hp/hr For 200 HP output, that difference is 10 gph . . . so 125lb turbine + extra fuel or 305lbs for a piston and less fuel = cost . . . for the life of the engine. . . . take your pick. Wolfgang ----- Original Message -----=20 From: rwolf99@aol.com=20 To: lml@lancaironline.net=20 Sent: Friday, July 20, 2012 10:11 PM Subject: Re: New Turbine Engine I have to disagree with Wolfgang on this one, but I do accept his = premise that a 240 HP turbine will consume a lot more fuel than a 240 HP = recip. But the amazing thing is getting 241 HP out of a 125 pound engine. = *That* is impressive! Put it in context - my IO-360 gets 180 HP and weighs 260 pounds. = Marv's engine provides 33% more horsepower and weighs less than half. = We can run every comparison under the sun and argue all day long to no = conclusion -- how much extra fuel weight we need to carry, how much less = engine weight we need, and so forth -- but the bottom line is that this = little engine enables some aircraft designs that just would not be = possible with a recip. - Rob Wolf ------=_NextPart_000_004C_01CD6755.8C5404D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
What's there to disagree with = ?
At 10 gph more that's 180 lbs more in = take off=20 weight for a 3 hour flight.
A piston engine consumes about 0.5=20 lbs/hp/hr
That turbine is just over 0.8=20 lbs/hp/hr
For 200 HP output, that difference is = 10=20 gph
. . . so 125lb turbine + extra fuel or = 305lbs for a=20 piston and less fuel cost . . . for the life of the engine.
. . . take your pick.
 
Wolfgang
 
----- Original Message -----
From:=20 rwolf99@aol.com=20
Sent: Friday, July 20, 2012 = 10:11=20 PM
Subject: Re: New Turbine = Engine

I have to disagree = with=20 Wolfgang on this one, but I do accept his premise that a 240 HP = turbine will=20 consume a lot more fuel than a 240 HP recip.
 
But the amazing thing is getting 241 HP out of a 125 pound = engine. =20 *That* is impressive!
 
Put it in context - my IO-360 gets 180 HP and weighs 260 = pounds. =20 Marv's engine provides 33% more horsepower and weighs less than = half.  We=20 can run every comparison under the sun and argue all day long to no = conclusion=20 -- how much extra fuel weight we need to carry, how much less engine = weight we=20 need, and so forth -- but the bottom line is that this little engine = enables=20 some aircraft designs that just would not be possible with a = recip.
 
- Rob Wolf
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