Mailing List flyrotary@lancaironline.net Message #55575
From: Kelly Troyer <keltro@att.net>
Subject: Re: VNE / Flutter Testing
Date: Sun, 3 Jul 2011 12:48:28 -0700 (PDT)
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
That is true Dustin...........I left out the fine details...............
 
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: Dustin Lobner <dmlobner@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sunday, July 3, 2011 2:41 PM
Subject: [FlyRotary] Re: VNE / Flutter Testing

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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