X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 890639 for flyrotary@lancaironline.net; Tue, 20 Dec 2005 20:21:42 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=ceengland@bellsouth.net Received: from ibm65aec.bellsouth.net ([209.215.60.59]) by imf22aec.mail.bellsouth.net with ESMTP id <20051221012058.MREH26439.imf22aec.mail.bellsouth.net@ibm65aec.bellsouth.net> for ; Tue, 20 Dec 2005 20:20:58 -0500 Received: from [127.0.0.1] (really [209.215.60.59]) by ibm65aec.bellsouth.net with ESMTP id <20051221012057.FNRD18352.ibm65aec.bellsouth.net@[127.0.0.1]> for ; Tue, 20 Dec 2005 20:20:57 -0500 Message-ID: <43A8ADF6.9030405@bellsouth.net> Date: Tue, 20 Dec 2005 19:20:54 -0600 From: Charlie England User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Props References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit David Leonard wrote: > I have had my 68" prop up to 6600 Engine RPM (2.17 PSRU) at 17k' > (about 15 deg OAT - which makes the speed of sound slower.. i.e. > increases you mach #) and didn't notice anything unusual. Then again, > I wouldn't know the sound of supersonic tips if I heard them. I > regularly cruise at 6000 RPM. > > -- > Dave Leonard > Turbo Rotary RV-6 N4VY > http://members.aol.com/_ht_a/rotaryroster/index.html > http://members.aol.com/_ht_a/vp4skydoc/index.html You've heard it, even if you didn't know it. Any AT-6/SN-J on the back side of a loop at an airshow. Charlie