Mailing List flyrotary@lancaironline.net Message #45173
From: Charlie England <ceengland@bellsouth.net>
Subject: Re: [FlyRotary] Re: EM3 Shameless promotion
Date: Wed, 11 Feb 2009 18:30:02 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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 <montyr2157@alltel.net <mailto:montyr2157@alltel.net>> 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



Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster