REFLECTOR: Flutter testing
John Abraham
john at velocityaircraft.com
Fri Feb 17 13:25:04 CST 2012
The curvature in the rudder so that the air can preload the surface.
John Abraham
Chief Pilot, Executive V.P. Sales and Marketing
Description: 4103
200 W. Airport Drive
Sebastian, FL 32958
<http://www.velocityaircraft.com/> www.velocityaircraft.com
(P): 772-589-1860
(F): 772-589-1893
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Jones Nick
Sent: Friday, February 17, 2012 2:16 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Flutter testing
Reflects?
Best regards,
Nick
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of John Abraham
Sent: Friday, February 17, 2012 2:04 PM
To: 'Velocity Aircraft Owners and Builders list'; 'Ron N Velocity XLFG'
Subject: Re: REFLECTOR: Flutter testing
Generally, you will see flutter around 185kias if it is winglet induced.
The initial indication that it feels like is a tire spinning up in the wheel
well. If you look at the winglet it will be doing a figure 8 pattern and
gets your attention quick. I have seen this caused the most when the
reflects is taken out of the rudder during finish work. The only way that
you can eliminate this is to shim the rudders out into the airstream if you
get this.
John Abraham
Chief Pilot, Executive V.P. Sales and Marketing
Description: 4103
200 W. Airport Drive
Sebastian, FL 32958
<http://www.velocityaircraft.com/> www.velocityaircraft.com
(P): 772-589-1860
(F): 772-589-1893
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of John Youngblood
Sent: Friday, February 17, 2012 1:46 PM
To: Ron N Velocity XLFG; Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Flutter testing
Why do flutter testing?
John
On Feb 17, 2012, at 8:12 AM, Ron N Velocity XLFG wrote:
I am continuing my flight testing and have been doing some flutter testing.
What I have been doing is
whacking the control stick to the front then back then left then right to
see if I can induce flutter. So far no flutter up to 165 knots.
I hate this part of the testing the plane is so responsive so when I wack
the stick the plane does an very abrupt move.
Bang my head once . Ant one found a better way to induce flutter ?
Second thing I have noticed at climb out at around 90 knots and start a bank
turn I get a small vibration I think it is buffeting of the canard
any one else have this happen?
Ron
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