X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 03 Nov 2007 19:04:24 -0400 Message-ID: X-Original-Return-Path: Received: from mailrelay.embarq.synacor.com ([208.47.184.3] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2453894 for lml@lancaironline.net; Sat, 03 Nov 2007 12:36:58 -0400 Received-SPF: pass receiver=logan.com; client-ip=208.47.184.3; envelope-from=liegner@embarqmail.com X-Original-Return-Path: X_CMAE_Category: 0,0 Undefined,Undefined X-CNFS-Analysis: v=1.0 c=1 a=vr5Q5WBrAAAA:8 a=czp76-yGFYAt4GG30XEA:9 a=uqa-poYnz274yPJXLveHhbqg05EA:4 a=D403zBTnw2wA:10 a=cvn8laQl214A:10 a=_nTnokiiu5oA:10 a=O1KNRJ6V1T0A:10 a=hpF-ijbX5cwA:10 a=iwi8BYiNt0sfq8llfPgA:9 a=l5iRuLx4y9WVWa6lmt0A:7 a=VS4o87KFcmgOxCg1e3H6kdofJg4A:4 a=AfD3MYMu9mQA:10 X-CM-Score: 0 X-Scanned-by: Cloudmark Authority Engine Authentication-Results: smtp07.embarq.synacor.com smtp.mail=liegner@embarqmail.com; spf=neutral Authentication-Results: smtp07.embarq.synacor.com smtp.user=liegner@embarqmail.com; auth=pass (LOGIN) Received-SPF: neutral (smtp07.embarq.synacor.com: 69.34.165.104 is neither permitted nor denied by domain of embarqmail.com) Received: from [69.34.165.104] ([69.34.165.104:11242] helo=[172.16.1.2]) by mailrelay.embarq.synacor.com (envelope-from ) (ecelerity 2.2.1.21 r(19176)) with ESMTPA id 78/34-07884-E83AC274; Sat, 03 Nov 2007 12:36:31 -0400 Mime-Version: 1.0 X-Sender: liegner@embarqmail.com@pop.embarqmail.com X-Original-Message-Id: In-Reply-To: References: X-Original-Date: Sat, 3 Nov 2007 12:15:50 -0400 X-Original-To: "Michael Newman" From: "Jeffrey Liegner, MD" Subject: Re: Speeds at Altitude X-Original-Cc: "Lancair Mailing List" Content-Type: multipart/alternative; boundary="============_-1018014707==_ma============" --============_-1018014707==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" What is your pressurization status at this sub-28" MAP and FL250....cabin altitude and PSI differential? I've noticed that my IAS is about the same 188-192 regardless of MAP power setting (30" to 36", 2500 RPM). Obviously, fuel flow is different. And you are LOP with 15.3 gph, which makes the power output here even lower than ROP operations, here at something ~50%. And what are your cruise CLIMB power settings to get to FL250? Thanks. Jeff L >I saw 343 Kts groundspeed today. > >FL 250 >2450 rpm >27.5 inches >15.3 gph >270 TAS >wing tape installed >Lancair IV-P N776CM > > >Michael Newman > >Dragonnorth Group > >319 Dean Rd. >Brookline, MA 02445 > >Cell: 617 821-4608 >Home: 617 566-7975 >Fax: 617 566-7975 > >www.dragonnorth.com > >mnewman@dragonnorth.com > > -- New email address: liegner@embarqmail.com --============_-1018014707==_ma============ Content-Type: text/html; charset="us-ascii" Re: Speeds at Altitude
What is your pressurization status at this sub-28" MAP and FL250....cabin altitude and PSI differential?

I've noticed that my IAS is about the same 188-192 regardless of MAP power setting (30" to 36", 2500 RPM).  Obviously, fuel flow is different.

And you are LOP with 15.3 gph, which makes the power output here even lower than ROP operations, here at something ~50%.

And what are your cruise CLIMB power settings to get to FL250?

Thanks.

Jeff L


I saw 343 Kts groundspeed today.
 
FL 250
2450 rpm
27.5 inches
15.3 gph
270 TAS
wing tape installed
Lancair IV-P N776CM
 
Michael Newman
Dragonnorth Group

319 Dean Rd.
Brookline, MA 02445
Cell: 617 821-4608
Home: 617 566-7975
Fax: 617 566-7975
www.dragonnorth.com
mnewman@dragonnorth.com
 

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New email address: liegner@embarqmail.com
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