X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ey0-f180.google.com ([209.85.215.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTP id 4551265 for flyrotary@lancaironline.net; Mon, 01 Nov 2010 19:45:19 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.180; envelope-from=msteitle@gmail.com Received: by eyf6 with SMTP id 6so3640519eyf.25 for ; Mon, 01 Nov 2010 16:44:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=NpFnWW9P8iBBBPgXCvx7tOUWJZf6g30sO4nYpC1IWA0=; b=xrmTKVUi/D/omAIn/HW8v+pVVI5+kci8Cfd+HL1IdMu81D854M1Xmb7/mQoLtgpsk4 CY2WgJSNrsRgAc13TTnlp8Gp3sES15iaEB9ry0g80m/zf8bkmLFJnhoYtcvjkNNgBYxd GeFPbNwlEO3lahSuBbFU0akCLuvuAfsOIJVEU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=my+jMwT0isxQ6ujpyFNqgqgVzSsdb6sBL0jyCgF+/cOGUsFSTcIanyMQdcMcqpODvV 4XOeIbQV7u08aamzuVqcFIU6kaYkuCXFDkx9VjPsoDjHib/UIUQ7pTDAgpvNfqEHsCty N9xhNhvpppNFlU8y+BCNWWACLBn0MOt339wcE= MIME-Version: 1.0 Received: by 10.213.15.210 with SMTP id l18mr249592eba.22.1288655083036; Mon, 01 Nov 2010 16:44:43 -0700 (PDT) Received: by 10.213.33.131 with HTTP; Mon, 1 Nov 2010 16:44:42 -0700 (PDT) In-Reply-To: References: Date: Mon, 1 Nov 2010 18:44:42 -0500 Message-ID: Subject: Re: [FlyRotary] Re: EM2 Numbers From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015174c43c2765fdd04940664b8 --0015174c43c2765fdd04940664b8 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Al, No, we sure didn't. In fact, I like going faster than my wallet can keep up. In doing some searching for LDmax for the Lancair ES, I read the statement that best economy would be the same as best glide. That makes sense to me. Probably close enough for our purposes. What say you? Mark On Mon, Nov 1, 2010 at 5:53 PM, Al Gietzen wrote: > Where does one find the "most efficient operationg point" for a > particular airframe? Is this the same as LDmax? > > > > Mark; > > > > The EM2 reads out MPG. Most efficient operation would be where you get th= e > highest MPG. So go fly at 100F, or so; lean of peak EGT and take some dat= a > of MPG and speed. You=92ll find a max MPG point that is slower than you= =92ll > typically want to fly. I think for my Velocity it was a fairly broad pea= k > around 125 (I don=92t even remember now if that was MPH or Kts; because I > never fly there in level flight). We didn=92t build sleek airplanes with= more > powerful engines to go the speed of a Skyhawk =96 did we? > > > > Al > --0015174c43c2765fdd04940664b8 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Al,

No, we sure didn't. =A0In fact, I like going fas= ter than my wallet can keep up. =A0

In doing some = searching for LDmax for the Lancair ES, I read the statement that best econ= omy would be the same as best glide. =A0That makes sense to me. =A0Probably= close enough for our purposes. =A0What say you? =A0

Mark

On Mon, Nov 1, 2010 a= t 5:53 PM, Al Gietzen <ALVentures@cox.net> wrote:

Where does one find the &= quot;most efficient operationg point" for a particular airframe?=A0 Is this the same as=A0LDmax?

=A0

Mark;

=A0

The EM2 reads = out MPG. Most efficient operation would be where you get the highest MPG. So go fly at 100F, or so;= lean of peak EGT and take some data of MPG and speed. =A0You=92ll find a max MPG point that is slower than you=92ll typically want to fly.=A0 I think for my Velocity<= /font> it was a fairly broad peak aro= und 125 (I don=92t even remember now if that was MPH or Kts; because I never fl= y there in level flight).=A0 We didn=92t build sleek airplanes with more powerful engines to go the speed of a Skyha= wk =96 did we?

=A0

Al


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