REFLECTOR: STICK & RUDDER

Tue Mar 27 11:30:15 CDT 2007

Thanks for the definition.  I looked in my handbook and did not find a Va but there is a Vno (maximum design structural cruising speed) which is the top of the green arc.  I don't know just what the difference is but my manual puts it at 170 Knts.

Tom,

Here's what I think is happening from your description.  First I think that your left winglet has more tow in than the right one and this is why you had to shim the right rudder.  Second I believe that full right rudder at high speed is twisting the top of the winglet to the point of a negative angle of attack in the relative wind causing the winglet to flutter, not the rudder. I am concerned that you are exceeding the design limits of your aircraft and are on the brink of causing a catastrophic structural failure.

Larry Coen
N136LC
  ----- Original Message ----- 
  From: Lawrence Epstein,MD 
  To: 'Velocity Aircraft Owners and Builders list' 
  Sent: Tuesday, March 27, 2007 3:21 AM
  Subject: Re: REFLECTOR: STICK & RUDDER

  From FAA "Pilot's Handbook of Aeronautical Knowledge" 2003:

  -----Original Message-----
  From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Scott Derrick
  Sent: Tuesday, March 27, 2007 10:08 AM
  To: Velocity Aircraft Owners and Builders list
  Subject: Re: REFLECTOR: STICK & RUDDER

  Laurance,

      I wasn't questioning that there is a Va speed for the Velocity.  

      You said "You should never use full rudder unless you are at or below maneuvering speed.  If you are faster you are exceeding allowable structural loads."   

      I think your wrong about rudder deflection speed.   Show us where a limit on rudder usage is stated...

  Scott

  Laurence Coen wrote: 

  Yes really!!!  Va (maneuvering speed) is a structural limit every as much as Vne.  All airplanes have a maneuvering speed including the Velocity and it should be in your pilot manual.

  Larry Coen

  N136LC

    ----- Original Message ----- 

    From: Scott Derrick 

    To: Velocity Aircraft Owners and Builders list 

    Sent: Monday, March 26, 2007 9:27 AM

    Subject: Re: REFLECTOR: STICK & RUDDER

    Really???  I've never heard that before.  I rarely use rudder except in the pattern , decent, and playing tag with the mesa's.  I've never really paid attention to how much rudder I use but to increase my descent rate I usually use a lot. 

    I haven't seen this restriction in the Pilot Manual?

    Scott

    Laurence Coen wrote: 

    Tom,

    You should never use full rudder unless you are at or below maneuvering speed.  If you are faster you are exceeding allowable structural loads.

    Larry Coen

    N136LC

      ----- Original Message ----- 

      From: Tom Martino 

      To: Velocity List 

      Sent: Sunday, March 25, 2007 4:49 PM

      Subject: REFLECTOR: STICK & RUDDER

      At first I thought it was just the weather, or maybe an uneven fuel load . but I can no longer deny it.  My plane still yaws a bit to the left (which means I have to touch the right rudder to make it fly perfectly straight).  So I have the following questions and would like those with more experience to answer:

      1.      The ball is only a tiny bit out of center and I can get speeds of 200 KTAS or more . so should I leave the damn thing alone? 

      2.      The plane is almost perfect ... so should I make it fly perfectly? 

      I should also make these observations:

      --I already shimmed the wings with washers several hours ago - which helped a lot . but there is still a slight yaw,

      --I also shimmed the right rudder out a bit (right after I did the wing) . it seemed near perfect . but still a tiny yaw.

      --When I am at higher speeds (170+ TKAS) and make a hard right turn with full right rudder . the right rudder will flutter a bit.

      --When turning left at the same speed . no flutter at all.  Is this because I shimmed the right rudder out a bit to begin with?

      ANY AND ALL COMMENTS APPRECIATED.

      I have taken a lot of time to make this an exceptional bird . am I going too far?  

      Tom Martino

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

      _______________________________________________
      To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

      Visit the gallery!  www.tvbf.org/gallery
      user:pw       Check new archives: www.tvbf.org/pipermail
      Check old archives: http://www.tvbf.org/archives/velocity/maillist.html

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

 _______________________________________________To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector Visit the gallery!  www.tvbf.org/galleryuser:pw 

--  -    The most effectual engines for [pacifying a nation] are the public papers... [A despotic] government always [keeps] a kind of standing army of newswriters who, without any regard to truth or to what should be like truth, [invent] and put into the papers whatever might serve the ministers.     Thomas Jefferson to G. K. van Hogendorp    Oct. 13, 1785. (*) ME 5:181, Papers 8:632     
----------------------------------------------------------------------------

    _______________________________________________
    To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

    Visit the gallery!  www.tvbf.org/gallery
    user:pw     Check new archives: www.tvbf.org/pipermail
    Check old archives: http://www.tvbf.org/archives/velocity/maillist.html

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

 _______________________________________________To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector Visit the gallery!  www.tvbf.org/galleryuser:pw 

--  -     I worry about my child and the Internet all the time, even though she's too young to have logged on yet. Here's what I worry about. I worry that 10 or 15 years from now, she will come to me and say 'Daddy, where were you when they took freedom of the press away from the Internet?'     Mike Godwin, Electronic Frontier Foundation 

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

  _______________________________________________
  To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

  Visit the gallery!  www.tvbf.org/gallery
  user:pw   Check new archives: www.tvbf.org/pipermail
  Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20070327/1c83007d/attachment.htm 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/gif
Size: 4214 bytes
Desc: not available
Url : http://www.tvbf.org/mailman/private/reflector/attachments/20070327/1c83007d/attachment-0001.gif 