X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=G+5i7Os5 c=1 sm=1 tr=0 a=InEi8/caQF77dLUmcrIURg==:117 a=ias+X7q2/tl+PZSpagvXCw==:17 a=IkcTkHD0fZMA:10 a=J70Eh1EUuV4A:10 a=yXaWbq21XF_oK9N3uNwA:9 a=QEXdDO2ut3YA:10 From: "Kent Bedford kbedford@alphalink.com.au" Received: from viclamta16p.bpe.bigpond.com ([203.38.21.80] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 12918118 for flyrotary@lancaironline.net; Tue, 03 Sep 2019 03:32:18 -0400 Received-SPF: softfail receiver=logan.com; client-ip=203.38.21.80; envelope-from=kbedford@alphalink.com.au Received: from smtp.telstra.com ([10.10.26.4]) by viclafep16p-svc.bpe.nexus.telstra.com.au with ESMTP id <20190903073158.YXLT21775.viclafep16p-svc.bpe.nexus.telstra.com.au@smtp.telstra.com> for ; Tue, 3 Sep 2019 17:31:58 +1000 X-RG-Spam: Unknown X-RazorGate-Vade: gggruggvucftvghtrhhoucdtuddrgeduvddrudejuddguddulecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfupfevtfgpvffgnffuvffttedpqfgfvfenuceurghilhhouhhtmecugedttdenucenucfjughrpefvhffukffffgggtgfgsehtjeertddtfeejnecuhfhrohhmpefmvghnthcuuegvughfohhrugcuoehksggvughfohhrugesrghlphhhrghlihhnkhdrtghomhdrrghuqeenucfkphepuddrudefiedrudehfedrudefkeenucfrrghrrghmpehhvghloheplgduledvrdduieekrdegvddrvdegiegnpdhinhgvthepuddrudefiedrudehfedrudefkedpmhgrihhlfhhrohhmpeeokhgsvggufhhorhgusegrlhhphhgrlhhinhhkrdgtohhmrdgruhequceuqfffjgepkeeukffvoffkoffgpdhrtghpthhtohepoehflhihrhhothgrrhihsehlrghntggrihhrohhnlhhinhgvrdhnvghtqeenucevlhhushhtvghrufhiiigvpedt X-RazorGate-Vade-Verdict: clean 0 X-RazorGate-Vade-Classification: clean X-RG-VS-CLASS: clean X-Authentication-Info: Submitted using ID kent.bedford@bigpond.com Received: from [192.168.42.246] (1.136.153.138) by smtp.telstra.com (5.8.335) (authenticated as kent.bedford@bigpond.com) id 5D48A2870515D9A9 for flyrotary@lancaironline.net; Tue, 3 Sep 2019 17:31:58 +1000 To: Rotary motors in aircraft Subject: The ultimate question... Message-ID: <77d9c722-f852-1bb6-a7b5-23c0a54f4dc7@alphalink.com.au> Date: Tue, 3 Sep 2019 17:31:58 +1000 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-AU ...if someone has an about 450hp four rotor + turbo engine with effective cooling, and resolves the torsional vibration and resonance issues (which will partly be resolved by having four rotors anyway), are there any other foreseeable likely or possible issues that may need to be overcome to successfully operate it with a good 500hp-rated PSRU like a Ballistic or similar?