X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from lrcmmta09-srv.windstream.net ([166.102.165.81] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4118420 for flyrotary@lancaironline.net; Tue, 09 Feb 2010 18:55:57 -0500 Received-SPF: pass receiver=logan.com; client-ip=166.102.165.81; envelope-from=montyr2157@windstream.net Return-Path: X-WS-COS: WSOB804 X-Cloudmark-Category: Undefined:Undefined X-Cloudmark-Analysis: v=1.1 cv=5Sd8aPw2GZIJnjeKQlIQIPutSX+3O+lxaFf7fii6OSk= c=1 sm=0 a=_lZFVVS9x50A:10 a=oCcaPWc0AAAA:8 a=wjC20LN8AZU85KBg8g0A:9 a=9gGkUe-CH9XzQz63JDcA:7 a=vXLrQmofD5npsVeddrxJIFh9yDMA:4 a=kviXuzpPAAAA:8 a=Ia-xEzejAAAA:8 a=x7rXRjAn7T6rr2nAcFkA:9 a=a0Aeg8DbC4fM7YqkIZIA:7 a=sI0ZiLC-YSB89urJp0VlLC2G3hQA:4 a=4vB-4DCPJfMA:10 a=EzXvWhQp4_cA:10 a=/BCh3og2hsim97HtmUyo0A==:117 X-Cloudmark-Score: 0 Authentication-Results: lrcmmta09 smtp.user=montyr2157; auth=pass (LOGIN) Received: from [98.20.208.27] ([98.20.208.27:60258] helo=newbox) by lrcmmta09 (envelope-from ) (ecelerity 2.2.2.45 r()) with ESMTPA id 38/3C-07226-AE5F17B4; Tue, 09 Feb 2010 17:55:22 -0600 Message-ID: From: "MONTY ROBERTS" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. Renesis to turbo Date: Tue, 9 Feb 2010 17:55:13 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00FC_01CAA9B1.07BD9150" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_00FC_01CAA9B1.07BD9150 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Al, 5-6 more than he got or 5-6 more than base line? You also have to take into account that prop efficiency falls off pretty = steeply with increased speed and rpm. Especially if the tips start to go = transonic. There are some airplanes out there with CS props that will go = slower with the engine at redline, even though the engine is making more = power, because the prop is eating all of the extra and then some. Hate to see you selling your plane, she's a beauty. Wish I had the = dough. Looking forward to the next project...there will be a next one = won't there ;-).=20 Monty ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Tuesday, February 09, 2010 5:47 PM Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: = N.A. Renesis to turbo Subject: [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: = N.A. Renesis to turbo Hp =3D C*V^3 Is that simple enough? Simple enough - and with some other numbers Ed gave I compute he = should get 5-6 kts more top end. Al -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.5.435 / Virus Database: 271.1.1/2677 - Release Date: = 02/09/10 07:35:00 ------=_NextPart_000_00FC_01CAA9B1.07BD9150 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Al,
 
5-6 more than he got or 5-6 more than = base=20 line?
 
You also have to take into account that = prop=20 efficiency falls off pretty steeply with increased speed and rpm. = Especially if=20 the tips start to go transonic. There are some airplanes out there with = CS props=20 that will go slower with the engine at redline, even though the=20 engine is making more power, because the prop is eating all = of the=20 extra and then some.
 
Hate to see you selling your plane, = she's a beauty.=20 Wish I had the dough. Looking forward to the next project...there will = be a next=20 one won't there ;-). 
 
Monty
----- Original Message -----
From:=20 Al = Gietzen=20
Sent: Tuesday, February 09, = 2010 5:47=20 PM
Subject: [FlyRotary] Re: rpm vs = Power was=20 : Throttle limits was Re: N.A. Renesis to turbo

Subject:=20 [FlyRotary] Re: rpm vs Power was : Throttle limits was Re: N.A. = Renesis to=20 turbo

 

Hp =3D = C*V^3

 

Is that simple enough?

Simple = enough =96 and=20 with some other numbers Ed gave I compute he should get 5-6 kts more = top=20 end.

Al


No virus found in this incoming message.
Checked by AVG = - www.avg.com
Version: 8.5.435 / = Virus=20 Database: 271.1.1/2677 - Release Date: 02/09/10=20 07:35:00
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