X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 50 [XX] Return-Path: Received: from alnrmhc11.comcast.net ([206.18.177.51] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2047469 for flyrotary@lancaironline.net; Wed, 16 May 2007 09:13:08 -0400 Received-SPF: none receiver=logan.com; client-ip=206.18.177.51; envelope-from=rlwhite@comcast.net Received: from rlwhite (c-68-35-160-229.hsd1.nm.comcast.net[68.35.160.229]) by comcast.net (alnrmhc11) with SMTP id <20070516131229b1100kcfnre>; Wed, 16 May 2007 13:12:29 +0000 Date: Wed, 16 May 2007 07:13:04 -0600 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: TAS calibration Message-Id: <20070516071304.a3ef0482.rlwhite@comcast.net> In-Reply-To: References: X-Mailer: Sylpheed 2.4.0 (GTK+ 2.10.11; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 16 May 2007 8:02:09 -0500 wrote: > > > > > From: Ernest Christley > > Date: 2007/05/16 Wed AM 07:33:52 EST > > To: "Rotary motors in aircraft" > > Subject: [FlyRotary] Re: TAS calibration > > > > Bulent Aliev wrote: > > > Here is another question for the electronics gurus. > > > I noticed on the EM2 TAS is always 15-18 K while the plane is still? I > > > thought it is supposed to be zero? If so, I could not see a way to > > > adjust it? > > > Buly > > > > > That number happens to be somewhat close to the value of the > > acceleration that a prop introduces to the air. Where is your pitot > > located? That may be what the sensors are actually seeing. > > > > My pitot is in the nose (CZ MK-IV) and the prop at the back. Plane sitting in the hangar. No air movement. > Buly > Hi Buly, I'm pretty sure there is a calibration setting in the EM2. Mine wasn't zero either and I seem to recall adjusting it. I'll have to look thru my notes to see if I can find it. Bob W. -- N93BD - Rotary Powered BD-4 - http://www.bob-white.com 3.8 Hours Total Time and holding Cables for your rotary installation - http://www.roblinphoto.com/shop/