Return-Path: Received: from [199.185.220.224] (HELO priv-edtnes40.telusplanet.net) by logan.com (CommuniGate Pro SMTP 4.2b7) with ESMTP id 311883 for flyrotary@lancaironline.net; Mon, 12 Jul 2004 03:25:39 -0400 Received: from Endurance ([207.216.170.43]) by priv-edtnes40.telusplanet.net (InterMail vM.6.01.03.02 201-2131-111-104-20040324) with SMTP id <20040712072508.BZZM8867.priv-edtnes40.telusplanet.net@Endurance> for ; Mon, 12 Jul 2004 01:25:08 -0600 From: "Todd Bartrim" To: "Rotary motors in aircraft \(E-mail\)" Subject: Gross Weight climb test Date: Mon, 12 Jul 2004 00:25:06 -0700 Message-ID: <000301c467e1$5bf8efc0$0101a8c0@Endurance> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2739.300 Today I did my gross weight climb test which is required in Canada (not sure if it is in the US). I was a little nervous about it, but everything went great. I loaded up all 6 tanks for an 84usg total strapped down a backpack full of climbing gear and an inflatable boat (100 lbs total) into the cargo, then filled a large hockey bag with my tech books from the last several years of school (128 lbs - I guess they were good for something), which I was able to buckle securely into the passenger seat. The formula that I used to determine minimum climb rate, worked out to 890' in 3 minutes, which I was certain I could attain. Gross weight was 2108 lbs and I rotated at 85mph using full power (6psi boost). Initial climb rate was 1500'/min, slowing to 1000'/min. I held this steady until my temps (both oil & water) exceeded 210F (in 2 minutes) then I reduced power for the final minute of the test for a final result of 2400' in 3 minutes. I'd like to see a little better cooling, but considering the weight I'm satisfied that the test was easily passed. The aircraft was very stable at this weight, so while at altitude I did a clean stall, then checked power off descent rate (900'/min). I was uncomfortable landing at this weight, as I had planned the extra fuel to be used only for long flights, but to I just didn't have time this weekend for a long flight. It turned out to be a non-issue thanks to my AOA indicators. As I fly all my approaches by AOA instead of airspeed, the speeds were perfect and I just greased it softly onto the runway. It went so perfectly, I won't feel nervous at all about doing it again when the time comes for me to do a long cross country/ocean trip. (maybe non-stop to Oshkosh - next year)(or 1 stop to the round-up :-)