X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail14.syd.optusnet.com.au ([211.29.132.195] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTPS id 2638751 for flyrotary@lancaironline.net; Thu, 10 Jan 2008 02:35:40 -0500 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.195; envelope-from=lendich@optusnet.com.au Received: from george (d58-108-92-14.dsl.nsw.optusnet.com.au [58.108.92.14]) by mail14.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m0A7Yquj014489 for ; Thu, 10 Jan 2008 18:34:54 +1100 Message-ID: <001501c8535b$4bd8ae00$0e5c6c3a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: URL for HushPower Date: Thu, 10 Jan 2008 17:34:53 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0012_01C853AF.1C263F70" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0012_01C853AF.1C263F70 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Ed, Indeed talk is cheap, however I've had to spend a bit so far and my poor = allowance only goes so far. I've been bucking for an increase but the = boss ( she who must be obeyed) won't give me one. The problem is I've = still got two apprentices living at home - you know family first etc. I will get onto it soon though, but I haven't got a single engine = complete to test it on - I designed it for the single but with slight = mods it will also do the 2 rotor. You were on the right track Ed, but you can't put exposed edges to the = rotary exhaust - I see the holes in the cones as exposed edges. I have some photo's somewhere but can't find them, as soon as I do I = will post them. It does look spectacular!! George ( down under) Hey, George Talk is cheap {:>), I want to know when we get to the meaty part about = how well it works? I've done my experimenting with exhausts - every time I got one part = of the problem fixed - like sound loudness, I experienced a failure/draw = back someplace else - of course, could just be my ineptitude. I really = thought I had it when I put the 1/8" thick discs in the tubes - it did = really knock the sound down, but the exhaust pulses broke the welds = loose and the discs spun fast enough to give the exhaust a turbine sound = of its ownl {:>).=20 Looking forward to seeing the results, George Ed. ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Wednesday, January 09, 2008 6:58 PM Subject: [FlyRotary] Re: URL for HushPower Ed, I believe if Dave Leonard can now 'see the light' through the = muffler - it may be an indicator that the sound waves have broken = through the joining cones. In any event it will only get louder at the = passage gets bigger. I figured this would be the weakest link in the HushPower design = as it concentrates all the energy into the smallest area, holes in the = cones also weaken the area - not so with our design. George ( down under) Ed, Reflective cone theory is what Bill Jepson and I have designed = into our joint venture exhaust design - although I haven't finished it = so I don't know how well it works. The principle is to maintain a clear passage for the exhaust flow = but redirect the sound waves (which are energy) therefore turning the = sound into heat. In our design the heat is dissipated with cool air flow = through the exhaust and further cool air around the exhaust. However this is not a cheap exhaust to make, as mine is assembled = out of a number of cones ( 1.6mm SS). I think the cost of the cones came = to $200 and then there's the welding. There is also the fact that it is = also not light because of the thickness of the material. The bottom line is that cones by their nature redirect sound = energy into heat. The idea is to not have a direct exit for the sound = energy - this has been achieved in this design by having the sound waves = inter the center of a cone which is blocked-off and is redirected = through the holes and redirected out.=20 So the theory in this design ( HushPower) is sound - excuse the = pun. The packing material merely protects the light outer skin. There = will be a tremendous amount of heat in the inner chambers so I don't = know how long they will last, maybe there thick enough to take it ? = However if their cheap enough just replace them. George ( down under) From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Thursday, January 10, 2008 4:34 AM Subject: [FlyRotary] URL for HushPower It looks like Hushpower has been spun off from FlowMaster. Here = is the URL for the Hushpower site. http://www.hushpower.com/technology.html Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.dmack.net/mazda/index.html ------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.516 / Virus Database: 269.17.13/1214 - Release = Date: 8/01/2008 1:38 PM -------------------------------------------------------------------------= - No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.516 / Virus Database: 269.17.13/1214 - Release Date: = 8/01/2008 1:38 PM -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.516 / Virus Database: 269.17.13/1214 - Release Date: = 8/01/2008 1:38 PM ------=_NextPart_000_0012_01C853AF.1C263F70 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Ed,
Indeed talk is cheap, however I've had = to spend a=20 bit so far and my poor allowance only goes so far. I've been bucking for = an=20 increase but the boss ( she who must be obeyed) won't give me one. The = problem=20 is I've still got two apprentices living at home - you know family first = etc.
 
I will get onto it soon though, but I = haven't got a=20 single engine complete to test it on - I designed it for the single but = with=20 slight mods it will also do the 2 rotor.
 
You were on the right track Ed, but you = can't put=20 exposed edges to the rotary exhaust - I see the holes in the cones as = exposed=20 edges.
 
I have some photo's somewhere but can't = find them,=20 as soon as I do I will post them. It does look = spectacular!!
George ( down under)

  Hey, George
 
Talk is cheap {:>), I want to know when we = get to the=20 meaty part about how well it works?
 
I've done my experimenting with exhausts - = every time I=20 got one part of the problem fixed - like sound loudness, I experienced = a=20 failure/draw back someplace else - of course, could just be my=20 ineptitude.  I really thought I had it when I put the 1/8" thick = discs in=20 the tubes - it did really knock the sound down, but the exhaust =  pulses=20 broke the welds loose and the discs spun fast enough to give the = exhaust a=20 turbine sound of its ownl {:>).
 
Looking forward to seeing the results,=20 George
 
Ed.
----- Original Message -----
From:=20 George Lendich
To: Rotary motors in = aircraft=20
Sent: Wednesday, January 09, = 2008 6:58=20 PM
Subject: [FlyRotary] Re: URL = for=20 HushPower

 
Ed,
 I believe if Dave Leonard = can now 'see=20 the light' through the muffler - it may be an indicator that the = sound=20 waves have broken through the joining cones. In any event it will = only get=20 louder at the passage gets bigger.
I figured this would be the = weakest link in=20 the HushPower design as it concentrates all the energy into the = smallest=20 area, holes in the cones also weaken the area - not so = with our=20 design.
George ( down under)
 
Ed,
Reflective cone theory is what = Bill Jepson=20 and I have designed into our joint venture exhaust=20 design  - although I haven't finished it so I don't = know=20 how well it works.
The principle is to maintain a = clear passage=20 for the exhaust flow but redirect the sound waves (which are = energy)=20 therefore turning the sound into heat. In our design the heat = is=20 dissipated with cool air flow through the exhaust and further cool = air=20 around the exhaust.
 
However this is not a cheap = exhaust to make,=20 as mine is assembled out of a number of cones ( 1.6mm SS). I think = the=20 cost of the cones came to $200 and then there's the welding. There = is also=20 the fact that it is also not light because of the thickness of the = material.
 
The bottom line is that cones by = their nature=20 redirect sound energy into heat. The idea is to not have a direct = exit for=20 the sound energy - this has been achieved in this design by having = the=20 sound waves inter the center of a cone which is blocked-off and is = redirected through the holes and redirected out.
 
So the theory in this design ( = HushPower) is=20 sound - excuse the pun. The packing material merely protects the = light=20 outer skin. There will be a tremendous amount of heat in the inner = chambers so I don't know how long they will last, maybe there = thick enough=20 to take it ? However if their cheap enough just replace = them.
 
George ( down under)
 
 
From:=20 Ed Anderson
To: Rotary motors in = aircraft=20
Sent: Thursday, January = 10, 2008=20 4:34 AM
Subject: [FlyRotary] URL = for=20 HushPower

It looks like Hushpower has been spun = off from=20 FlowMaster.  Here is the URL for the Hushpower = site.
 
http://www.hushpower.co= m/technology.html
 
Ed
Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.comhttp://www.andersonee.com
http:/= /members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.dmack.net/mazda= /index.html

No virus found in this incoming message.
Checked by = AVG Free=20 Edition.
Version: 7.5.516 / Virus Database: 269.17.13/1214 - = Release=20 Date: 8/01/2008 1:38 PM

No virus found in this incoming message.
Checked by AVG = Free=20 Edition.
Version: 7.5.516 / Virus Database: 269.17.13/1214 - = Release=20 Date: 8/01/2008 1:38 PM

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.516 / Virus Database: 269.17.13/1214 - = Release Date:=20 8/01/2008 1:38 PM
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