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Date: Sun, 3 Jul 2011 14:41:25 -0500
Message-ID: <CAOXqsn2owyuLuffFU8YchOro-Ux96-7_Wdc7wz20yZzsdqB3Yw@mail.gmail.com>
Subject: Re: [FlyRotary] Re: VNE / Flutter Testing
From: Dustin Lobner <dmlobner@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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I read somewhere (I can't recall, sorry) that basically you speed up a
couple of knots, let go of the stick, and then bump it forward and see what
happens (being ready to grab it in a hurry).  the the same with elevator,
rudder, and aileron.  Speed up a couple of more knots, try it again.

The idea is that you can have a "metastable" situation where there is no
flutter until a gust of wind comes by, at which point you're 30 knots over
where it can happen, so it happens in a hurry.  Creating the disturbance
yourself prevents it from being a metastable condition.

Dustin

On Sun, Jul 3, 2011 at 2:29 PM, Ernest Christley <echristley@nc.rr.com>wrote:

> **
> On 07/03/2011 03:24 PM, Kelly Troyer wrote:
>
>  Ernest,
>    The procedure is to test with many steps increasing speed in small
> increments always ready
> to reduce throttle and increase AOA at the slightest indication of
> flutter..............
>
>
>
> Dang!  I was hoping somebody had come up with something better than that.
>
> Oh, well.  At least that gives me a "reason" to take up parachuting 8*)
>

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I read somewhere (I can&#39;t recall, sorry) that basically you speed up a =
couple of knots, let go of the stick, and then bump it forward and see what=
 happens (being ready to grab it in a hurry).=A0 the the same with elevator=
, rudder, and aileron.=A0 Speed up a couple of more knots, try it again.<br=
>
<br>The idea is that you can have a &quot;metastable&quot; situation where =
there is no flutter until a gust of wind comes by, at which point you&#39;r=
e 30 knots over where it can happen, so it happens in a hurry.=A0 Creating =
the disturbance yourself prevents it from being a metastable condition.<br>
<br>Dustin<br><br><div class=3D"gmail_quote">On Sun, Jul 3, 2011 at 2:29 PM=
, Ernest Christley <span dir=3D"ltr">&lt;<a href=3D"mailto:echristley@nc.rr=
.com">echristley@nc.rr.com</a>&gt;</span> wrote:<br><blockquote class=3D"gm=
ail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(2=
04, 204, 204); padding-left: 1ex;">
<u></u>

 =20
   =20
 =20
  <div bgcolor=3D"#ffffff" text=3D"#000000"><div class=3D"im">
    On 07/03/2011 03:24 PM, Kelly Troyer wrote:
    <blockquote type=3D"cite">
      <div style=3D"color: rgb(0, 0, 0); background-color: rgb(255, 255, 25=
5); font-family: arial,helvetica,sans-serif; font-size: 12pt;">
        <div><span>Ernest,</span></div>
        <div><span>=A0=A0 The
            procedure is to test with many steps increasing speed in
            small increments always ready</span></div>
        <div><span>to reduce
            throttle and increase<var></var>=A0AOA=A0at
            the slightest indication of flutter..............</span></div>
        <div>=A0<br>
        </div>
      </div>
    </blockquote>
    <br></div>
    Dang!=A0 I was hoping somebody had come up with something better than
    that.<br>
    <br>
    Oh, well.=A0 At least that gives me a &quot;reason&quot; to take up par=
achuting
    8*)<br>
  </div>

</blockquote></div><br>

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