REFLECTOR: Canard incidence

[Scott Baker]

MessageWhat Al is describing is the top shape of the canard fastbuild wing as it was made by Wingco (Alan Shaw).  Wingco added greater camber to the canard, so much so that the standard canard incidence jig would not fit the shape of the wing (the jig at that time was in the shape of the upper airfoil).  To get the incidence jig to work, builders needed to add a "popcycle stick" or tongue stick to both the forward and rearward point where the jig contacted the wing.  This raised the jig enough to allow it to measure incidence, but not pivot or 'rock' on the apex of the canard upper airfoil.  If I'm not making sense, its because I just had some great wine with lasagna tonight.  The canard incidence has always been the same.  The popcycle stick thing was only used on Wingco canards and only to get the jig to sit above the apex of the higher camber put into the canard by Wingco.
SB
  ----- Original Message ----- 
  From: Terry Miles 
  To: 'Velocity Aircraft Owners and Builders list' 
  Sent: Monday, October 09, 2006 6:04 AM
  Subject: Re: REFLECTOR: Canard incidence


  This is a possible issue for me too.  Um, Scott B can you jump in here?  Has the factory always had the very same recommended canard incidence?  Or has it changed over the years?  ...or is there a range of degrees considered to be acceptable based on combination factors once in the flight test phase?
  Thanks,
  Terry
    -----Original Message-----
    From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Al Gietzen
    Sent: Sunday, October 08, 2006 10:39 AM
    To: 'Velocity Aircraft Owners and Builders list'
    Subject: Re: REFLECTOR: Canard incidence


    Subject: Re: REFLECTOR: Canard incidence



    HI AL

    The factory advised us to use two mixing sticks under the wingco canard gage on our XL.

    Mack  

    Hi, Mack;



    Can you tell me more specifically where/how you placed the sticks.  It will give me a better idea of how much of a change may be necessary. Two sticks is about 1/8".  And where did you place the gauge?  With the varying camber from center to tip, there is only one place where the gauge fits the coutour.  On mine it was about 2' in from the outboard end.



    When I was installing the canard some years ago, I spoke with both Alan and Mark Machado at Velocity, and neither suggested anything different about the use of the incidence gauge.



    Thanks,



    Al





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