X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qw-out-2122.google.com ([74.125.92.24] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3492175 for flyrotary@lancaironline.net; Fri, 13 Feb 2009 15:13:43 -0500 Received-SPF: pass receiver=logan.com; client-ip=74.125.92.24; envelope-from=rwstracy@gmail.com Received: by qw-out-2122.google.com with SMTP id 8so373772qwh.25 for ; Fri, 13 Feb 2009 12:13:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=4EzKwSjL5xLy0HhnBwkcChDuOpoMsMZahOA4s4kfxs8=; b=OaQdlO2NMDflMxJakheIH/NoQhUZ/D11V/xT6bmtYq/a9TaCXIbTrOONWrxKHsQmYj MI+l3t8OXsYHauIJ93Ey1+rbXAj9vzkQpR3DY3VRGPUak5M1UvLtXh+Io+P68wo+JTTJ 54PkWlGPU+ghFQ4oeCRQEvmosPYL3GfLv8Eqo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=uB5VUP6D2Gof2MHPO/CoqvgRWnL01OLfkHyF19+D39vxYHwZNktyoM6l3ISjoATGOy 8zxep2rwxFU7GvLLoaQYQx+FDZ1bwfBvk3BYNX/cia+IOHcuqKnFe7zWZNWtfFndSOvn 9I8w4FUleCQp1xQ3DiApES8BQd93pUBxTIEio= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.224.2.74 with SMTP id 10mr3974196qai.260.1234555988459; Fri, 13 Feb 2009 12:13:08 -0800 (PST) In-Reply-To: References: Date: Fri, 13 Feb 2009 15:13:08 -0500 X-Google-Sender-Auth: cab136526af73f91 Message-ID: <1b4b137c0902131213m526cd472rd83eb73aac4b9e78@mail.gmail.com> Subject: Re: [FlyRotary] Re: EM3 Shameless promotion From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015175cd61425c1870462d277c5 --0015175cd61425c1870462d277c5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Yes, it's possible. Would take some restructuring of the software but hell, why not. Tracy (list is growing) On Thu, Feb 12, 2009 at 3:51 PM, Charlie England wrote: > No way to just make it another software/display item? I was assuming > (don'tcha love that word) that static pressure would drive the encoder > output, & a separate software routine would calculate IAS from the pressure > differential measurement & true ALT from static pressure & manually-entered > baro setting, & the results would be available on an(other) air data page. > > (creep, creep, creep....) > > Charlie > > Tracy Crook wrote: > >> I could easily switch TAS to IAS but I plan to have the altitude drive an >> output for transponder encoding. That pretty much limits it to reading >> pressure altitude. I could have a baro adjustment if the encoder is not >> used. I'll put this on "The List". >> >> It already has VSI but the response time is slow compared to the steam >> gauge type. Good enough for backup I think and it is useful for inclusion >> in the data logger data. >> >> Tracy >> >> On Wed, Feb 11, 2009 at 7:30 PM, Charlie England > ceengland@bellsouth.net>> wrote: >> >> Now that the thread is reactivated, how about *indicated* >> airspeed? I'm thinking basic flight instrument backup: AS, ALT >> (with baro) & maybe vertical speed. >> >> Charlie >> >> Tracy Crook wrote: >> >> That came up in an earlier topic. I had decided to have a >> second TAS readout option so you could put a static probe >> (sponge covered tube, etc) in front / behind various heat >> exchangers so you could see the relative pressure recovery. >> I'll just use the same sensor as the main TAS pressure sensor. >> You can convert the mph reading back into pressure if that was >> needed. >> >> Tracy >> >> On Wed, Feb 11, 2009 at 5:45 PM, Monty Roberts >> >> >> >> wrote: >> >> Tracy, >> I was mostly thinking about air pressures. Like plenum, >> after >> radiator etc. I'm not sure what the best type of transducer >> would >> be, but my guess is the MAP sensors are the least expensive >> way to >> go. Most of the lab grade transducers with a pedigree are just >> ridiculously overpriced. If they work with 0-5 that would >> be perfect. >> Unless you know of something better in which case, I'm >> all ears. ;-) Monty >> Hi Monty, >> What kind of pressure are you thinking of? Air, liquid, >> what >> pressure range, etc? I could have some gen purpose 0 - 5 volt >> inputs that can be calibrated to whatever units you wanted. >> You >> would have to use a sensor that put out voltage in this >> range though. >> >> Tracy >> >> >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> >> ------------------------------------------------------------------------ >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com Version: 8.0.234 / Virus Database: >> 270.10.23/1949 - Release Date: 02/10/09 07:20:00 >> >> >> > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --0015175cd61425c1870462d277c5 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Yes, it's possible.  Would take some restructuring of the software= but hell, why not.

Tracy (list is growing)


On Thu, Feb 12, 2009 at 3:51 PM, Charlie England <ceengland@bellsouth.ne= t> wrote:
No way to just ma= ke it another software/display item? I was assuming (don'tcha love that= word) that static pressure would drive the encoder output, & a separat= e software routine would calculate IAS from the pressure differential measu= rement & true ALT from static pressure & manually-entered baro sett= ing, & the results would be available on an(other) air data page.

(creep, creep, creep....)

Charlie

Tracy Crook wrote:
I could easily switch TAS to IAS but I plan to have the altitude drive an o= utput for transponder encoding.  That pretty much limits it to reading= pressure altitude.  I could have a baro adjustment if the encoder is = not used.  I'll put this on "The List".

It already has VSI but the response time is slow compared to the steam gaug= e type.  Good enough for backup I think and it is useful for inclusion= in the data logger data.

Tracy

On Wed, Feb 11, 2009 at 7:30 PM, Charlie England <ceengland@bellsouth.net <mail= to:ceengland@b= ellsouth.net>> wrote:

   Now that the thread is reactivated, how about *indicated*
   airspeed? I'm thinking basic flight instrument backup: AS= , ALT
   (with baro) & maybe vertical speed.

   Charlie

   Tracy Crook wrote:

       That came up in an earlier topic.  I had d= ecided to have a
       second TAS readout option so you could put a st= atic probe
       (sponge covered tube, etc) in front / behind va= rious heat
       exchangers so you could see the relative pressu= re recovery.
        I'll just use the same sensor as the main = TAS pressure sensor.
       You can convert the mph reading back into press= ure if that was
       needed.

       Tracy

       On Wed, Feb 11, 2009 at 5:45 PM, Monty Roberts<= br>        <montyr2157@alltel.net <mailto:montyr2157@alltel.net>
       <mailto:montyr2157@alltel.net <mailto:montyr2157@alltel.net>&g= t;>
       wrote:

          Tracy,
              I was mostly thinking abo= ut air pressures. Like plenum,
       after
          radiator etc. I'm not sure what the= best type of transducer
       would
          be, but my guess is the MAP sensors are= the least expensive
       way to
          go. Most of the lab grade transducers w= ith a pedigree are just
          ridiculously overpriced. If they work w= ith 0-5 that would
       be perfect.
              Unless you know of someth= ing better in which case, I'm
       all ears. ;-)        Monty<= br>                   Hi Monty,              What kind of pressure are = you thinking of?  Air, liquid,
       what
          pressure range, etc?  I could have= some gen purpose  0 - 5 volt
          inputs that can be calibrated to whatev= er units you wanted.
        You
          would have to use a sensor that put out= voltage in this
       range though.

          Tracy




   --
   Homepage:  http://www.flyrotary.com/
   Archive and UnSub:      http://m= ail.lancaironline.net:81/lists/flyrotary/List.html


------------------------------------------------------------------------

No virus found in this incoming message.
Checked by AVG - www.avg.c= om Version: 8.0.234 / Virus Database: 270.10.23/1949 - Release Date: 02= /10/09 07:20:00

 


--
Homepage:  htt= p://www.flyrotary.com/
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