X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2094015 for flyrotary@lancaironline.net; Sat, 09 Jun 2007 21:32:13 -0400 Received-SPF: none receiver=logan.com; client-ip=205.152.59.72; envelope-from=rusty@radrotary.com Received: from ibm68aec.bellsouth.net ([65.6.194.9]) by imf24aec.mail.bellsouth.net with ESMTP id <20070610013136.BSNS2319.imf24aec.mail.bellsouth.net@ibm68aec.bellsouth.net> for ; Sat, 9 Jun 2007 21:31:36 -0400 Received: from rd ([65.6.194.9]) by ibm68aec.bellsouth.net with ESMTP id <20070610013136.DNEB5117.ibm68aec.bellsouth.net@rd> for ; Sat, 9 Jun 2007 21:31:36 -0400 From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Single rotor video Date: Sat, 9 Jun 2007 20:31:38 -0500 Message-ID: <000901c7aaff$17160550$6e01a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000A_01C7AAD5.2E3FFD50" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 Importance: Normal Thread-Index: Aceq+5BuE9WZ/6IhT867dLvpiDBhqAAAprFA In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 This is a multi-part message in MIME format. ------=_NextPart_000_000A_01C7AAD5.2E3FFD50 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable How about a simple band-brake (or a disc-brake) to stop the prop " in = case". It will also work as a safety brake when starting and idling. But make = the brake handle cross the throttle so you can't accelerate when the brake = is engaged.=20 =20 I'm sure something like this could be worked out, but it wouldn't be an issue for draggy things like gyros. You have to have a glide ratio = before you can worry about losing it :-) =20 =20 Seriously, the pre-rotator on the gyro we were flying can be used as a brake, and in fact we did that when we shut the engine off to stop the = prop. I'm not sure that would be the best idea in the air, just in case there = was enough energy in the prop to actually turn the hydraulic pre-rotator = pump enough to engage the bendix on the rotor head. =20 =20 "Keep the gyro" :)=20 =20 I like the way you think :-) =20 Rusty =20 =20 ------=_NextPart_000_000A_01C7AAD5.2E3FFD50 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
How about a simple band-brake (or a disc-brake) to stop the prop " = in=20 case".
It will also work as a safety brake when starting and idling. But = make the=20 brake handle cross the throttle so you can't accelerate when the brake = is=20 engaged. 
 
I'm sure=20 something like this could be worked out, but it wouldn't be an issue for = draggy=20 things like gyros.  You have to have a glide ratio before you can = worry=20 about losing it :-)  
 
Seriously,=20 the pre-rotator on the gyro we were flying can be used as a brake, and = in fact=20 we did that when we shut the engine off to stop the prop.  I'm not = sure=20 that would be the best idea in the air, just in case there was enough = energy in=20 the prop to actually turn the hydraulic pre-rotator pump enough to = engage the=20 bendix on the rotor head. 
 
 "Keep the gyro" = :) 
 
I like the=20 way you think :-)
 
Rusty
 

 
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