Return-Path: Received: from ns5.rokland.us ([67.15.10.31] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP-TLS id 565527 for flyrotary@lancaironline.net; Mon, 13 Dec 2004 11:39:35 -0500 Received-SPF: none receiver=logan.com; client-ip=67.15.10.31; envelope-from=bob@bob-white.com Received: from bgp01386375bgs.brodwy01.nm.comcast.net ([68.35.160.229] helo=localhost) by ns5.rokland.us with smtp (Exim 4.43) id 1CdtEC-0004tO-SW for flyrotary@lancaironline.net; Mon, 13 Dec 2004 10:39:17 -0600 Date: Mon, 13 Dec 2004 09:39:14 -0700 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Glide distances Message-Id: <20041213093914.35183a7b.bob@bob-white.com> In-Reply-To: References: X-Mailer: Sylpheed version 1.0.0beta2 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Antivirus-Scanner: Clean mail though you should still use an Antivirus X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - ns5.rokland.us X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - bob-white.com X-Source: X-Source-Args: X-Source-Dir: Ed, That's excellent. Your engine quits so you go into test pilot mode and get all the data you can. Glide is one advantage you RV guys will have over me I think. From what I've heard, the BD-4 glides a little better than a rock with power off. I've only got 2 hours flying time in it, so I'm a little lite on first hand experience. Hopefully soon. Was this before you upgraded to the "monster" prop? Bob White On Mon, 13 Dec 2004 10:47:45 -0500 "Ed Anderson" wrote: > On my 12 mile engine out glide, I punched up the NRST button on my GPS > to find the two closest airfields were both 12 miles away (gulp!). > Since I knew I was going to be gliding around 85 mph that any sort of > headwind would considerably shorten the glide. Fortunately I had been > paying attention to the wind direction as I was outrunning a cold > front, so turned 120 degs for the downwind field. > > From 9500 MSL I arrived over the selected airfield with approx > 1500-2000 ft AGL. I had altitude to do a 360 and a couple of hard > "S" turns to loose altitude and even then came over the fence at 100 > mph. This with a stubby wing RV-6A. > > I did have time in that 8 minute glide to find out that my best glide > speed (at that weight) was 87 MPH which produced a 750 fpm rate of > descent. Any slower the rate went up and any faster the rate went up. > Also were I found what airspeeds the prop would stop at as well as > what it took to get it going again. So a rather productive 8 minutes > all things considered {:>). > > Ed Anderson -- http://www.bob-white.com N93BD - Rotary Powered BD-4 (soon)