X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: "RES res12@fairpoint.net" Received: from smtp.email-protect.gosecure.net ([208.80.203.1] verified) by logan.com (CommuniGate Pro SMTP 6.3.5) with ESMTPS id 208979 for flyrotary@lancaironline.net; Sun, 15 Aug 2021 12:15:54 -0400 Received-SPF: error receiver=logan.com; client-ip=208.80.203.1; envelope-from=res12@fairpoint.net Received: from mailproxy5.neonova.net ([137.118.40.135]) by smtp.email-protect.gosecure.net ({d00eee14-f1ad-11eb-9e23-e7cca463805a}) via TCP (outbound) with ESMTP id 20210815161535011_00003507 for ; Sun, 15 Aug 2021 09:15:35 -0700 X-RC-FROM: X-RC-RCPT: Received: from [IPv6:::ffff:192.168.2.7] (unknown [209.105.170.5]) (Authenticated sender: res12@fairpoint.net) by mailproxy5.neonova.net (Postfix) with ESMTPA id B510160005E for ; Sun, 15 Aug 2021 12:15:31 -0400 (EDT) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: RE: [FlyRotary] Interesting "Twin Pack" Rotary Demo Idea Date: Sun, 15 Aug 2021 11:11:49 -0500 Importance: normal X-Priority: 3 In-Reply-To: References: Content-Type: multipart/alternative; boundary="_B1B47F7D-7A8B-4BCD-BCDE-455F1698A00D_" Message-ID: <20210815161535011@smtp.email-protect.gosecure.net> X-DLP-OUTBOUND: 137.118.40.128/25 X-MAG-OUTBOUND: greymail.email-protect.gosecure.net@137.118.40.128/25 --_B1B47F7D-7A8B-4BCD-BCDE-455F1698A00D_ Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Ernest, you pretty much said it all.=20 Let me just add a few thing.=20 Since you have pretty much everything double, so are possible failure sourc= es.=20 Why counter rotating propellers? Is there a power density issue?=20 Would have to spend millions and millions to getting that into the air.=20 I have been there done that at a much simpler scale, with just one rotor, a= ll the way to safely fly it in my 700lb airplane.=20 There is a lot more to it! Sent from Mail for Windows From: RV9flyer 13B Rotary rv9flyer13b@gmail.com Sent: Sunday, August 15, 2021 8:10 AM To: Rotary motors in aircraft Subject: [FlyRotary] Interesting "Twin Pack" Rotary Demo Idea An aero-engineer on the VANS Alternative Engine list posted his dream proje= ct on creating a Twin Pack single rotor to put in an RV-8. =C2=A0Some very = creative thinking to bring it along this far IMO! =C2=A0 Doug=C2=A0 https://www.youtube.com/watch?v=3DkMxJ7G-lRhk --_B1B47F7D-7A8B-4BCD-BCDE-455F1698A00D_ Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"

Ernes= t, you pretty much said it all.

Let me just add a = few thing.

Since you have pretty much everything d= ouble, so are possible failure sources.

Why counte= r rotating propellers? Is there a power density issue?

Would have to spend millions and millions to getting that into the air= .

I have been there done that at a much simpler sc= ale, with just one rotor, all the way to safely fly it in my 700lb airplane= .

 

There = is a lot more to it!

 

 

Sent from Mail for Windows

=

 

 

https://www.youtube.com/watch?v=3DkMxJ7G-lRhk

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