Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2986137 for flyrotary@lancaironline.net; Tue, 10 Feb 2004 14:25:17 -0500 Received: from edward (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i1AJPEq4008978 for ; Tue, 10 Feb 2004 14:25:15 -0500 (EST) Message-ID: <001401c3f00b$9ccc3140$2402a8c0@edward> From: "Ed Anderson" To: "Rotary motors in aircraft" Subject: New Rotary Engine Spreadsheet Date: Tue, 10 Feb 2004 14:25:15 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0011_01C3EFE1.B3B109F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0011_01C3EFE1.B3B109F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Rotary Power and Cooling Spreadsheet For those of you interested I have modified the Rotary Power and Cooling = spreadsheet provided to those of you who requested it in the past. This = one has some additions based on requests. Several folks have wanted to have additional engine operating parameters = calculated, so I have added several new parameters in the calculated = results. These calculated results parameters now also include air flow = in lbs/min as well as CFM and fuel flow in Lbm/min as well as = Gallons/hour. It still has the HP, Prop RPM, BTU rejection by radiator = and oil cooler that it had before. You can still set it up for one, two, three or any number of rotors. = The Engine parameters calculated appear to be within 5% of the real = world results observed that I have been able to get from some reasonable = valid data. The cooling parameters are still rather basic but based on reports - = appears to correlate well with folks using the two evaporator cores and = stock oil cooler. Sorry, just have not gotten to the point where I can = modify the cooling part so that you can put in any radiator. One of the = reasons is that the K&W equations require you to know quite a bit about = the parameters of your radiator/coolers beyond that normally provided by = the manufacture. I have cut up a GM evaporator core to get some of the = measurements needed for the K&W equations. I hope to have the cooling = part upgraded to reflect that in the near future. Again, you can get any HP you want by inserting the proper rpm, air/fuel = ratio, altitude, OAT etc. THAT does NOT mean you engine will produce = 300 HP at 7000 rpm just because you plugged in those values. Remember = this is not a simulation but a calculation model and therefore it does = not have any provision for the effect of prop load on rpm and therefore = power. If you are interested just fire me an e mail Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ------=_NextPart_000_0011_01C3EFE1.B3B109F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Rotary Power and Cooling Spreadsheet

For those of you interested I have modified the Rotary Power and = Cooling=20 spreadsheet provided to those of you who requested it in the past. This = one has=20 some additions based on requests.

Several folks have wanted to have additional engine operating = parameters=20 calculated, so I have added several new parameters in the calculated=20 results. These calculated results parameters now also include air = flow in=20 lbs/min as well as CFM and fuel flow in Lbm/min as well as = Gallons/hour. =20 It still has the HP, Prop RPM, BTU rejection by radiator and oil cooler = that it=20 had before.

You can still set it up for one, two, three or any number of = rotors. =20 The Engine parameters calculated appear to be within 5% of the real = world=20 results observed that I have been able to get from some reasonable valid = data.

The cooling parameters are still rather basic but based on reports = -=20 appears to correlate well with folks using the two evaporator cores and = stock=20 oil cooler. Sorry, just have not gotten to the point where I can = modify=20 the cooling part so that you can put in any radiator. One of the = reasons=20 is that the K&W equations require you to know quite a bit about the=20 parameters of your radiator/coolers beyond that normally provided by the = manufacture. I have cut up a GM evaporator core to get some of the = measurements needed for the K&W equations. I hope to have the = cooling=20 part upgraded to reflect that in the near future.

Again, you can get any HP you want by inserting the proper rpm, = air/fuel=20 ratio, altitude, OAT etc. THAT does NOT mean you engine will = produce 300=20 HP at 7000 rpm just because you plugged in those values. Remember = this is=20 not a simulation but a calculation model and therefore it does not have = any=20 provision for the effect of prop load on rpm and therefore power.

If you are interested just fire me an e mail

Ed Anderson
RV-6A N494BW Rotary=20 Powered
Matthews, NC

eanderson@carolina.rr.com

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