X-Virus-Scanned: clean according to Sophos on Logan.com X-PolluStop-Diagnostic: (direct reply)\eX-PolluStop-Score: 0.00\eX-PolluStop: Scanned with Niversoft PolluStop 2.1 RC1, http://www.niversoft.com/pollustop Return-Path: Received: from fed1rmmtao06.cox.net ([68.230.241.33] verified) by logan.com (CommuniGate Pro SMTP 4.3c4) with ESMTP id 866902 for flyrotary@lancaironline.net; Tue, 12 Apr 2005 19:09:15 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.33; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao06.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050412230824.OOCU1497.fed1rmmtao06.cox.net@BigAl> for ; Tue, 12 Apr 2005 19:08:24 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Air Cleaners-Screens Date: Tue, 12 Apr 2005 16:08:39 -0700 Message-ID: <000001c53fb4$9087a8c0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C53F79.E428D0C0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C53F79.E428D0C0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 One situation that I can think of, that is very likely to occur would be flying into a swarm of bugs. Even a coarse screen such as Al has = installed could easily become clogged with dead bugs choking off all intake air = and causing the engine to stop running.=20 =20 Hard to imagine where I could run into such a density of bugs; however, = if I have a theory that they would not get in the intake. The scoop is = located behind the maximum diameter of the fuselage. The bugs (that didn't get smashed) would be accelerated outward away from the fuselage as the = plane passed by, and because of their greater momentum (than the air), would = not come back toward the surface sufficiently to enter the scoop as the = fuselage converges.=20 =20 OK; at least that's the theory. I can only find out by putting the = plane in a wind tunnel and releasing a swarm of bees :-). =20 Oh; BTW Jerry, the air here in coastal CA where the prevailing breeze is = off the ocean has very little dust. And the Velocity will never (I hope) = take off from a dirt strip. =20 Al ------=_NextPart_000_0001_01C53F79.E428D0C0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

One situation that I can think of, that is = very likely to occur would be flying into a swarm of bugs. Even a coarse screen such = as Al has installed could = easily become clogged with dead bugs choking off all intake air and causing the = engine to stop running.

 

Hard to imagine where I could run = into such a density of bugs; however, if I have a theory that they would not = get in the intake.  The scoop is located behind the maximum diameter of = the fuselage.  The bugs (that didn’t get smashed) would be = accelerated outward away from the fuselage as the plane passed by, and because of = their greater momentum (than the air), would not come back toward the surface sufficiently to enter the scoop as the fuselage converges. =

 

OK; at least that’s the = theory.  I can only find out by putting the plane in a wind tunnel and releasing a = swarm of bees J.

 

Oh; BTW Jerry, the air here in = coastal CA where the prevailing breeze is off the ocean has very little dust. =  And the Velocity will never (I hope) take off from a dirt = strip.

 

Al

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