REFLECTOR: Canard cover

[Scott Derrick]

Maybe my dog house hatch flexes like yours does Pat but I've just never 
noticed??

I'll have to check that out.

Scott

Keith Hallsten wrote:

>Pat,
>
>If you have the usual arrangement, in which the canard cover is attached to
>the top of the canard, but has no fasteners to the rest of the fuselage, I
>would expect to see a bit of movement as the canard flexes.  This does not
>imply a problem, just the normal movement we should reasonably expect with
>flexible structures.
>
>If think you are going to add a few small fasteners to prevent the observed
>movement, be aware that they may need to take a surprising amount of load;
>as you stiffen the structure, it "attracts load".
>
>Keith Hallsten
>  
>
>-----Original Message-----
>From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
>Behalf Of Pat Shea
>Sent: Tuesday, July 05, 2005 1:42 PM
>To: Velocity Aircraft Owners and Builders list
>Subject: Re: REFLECTOR: Canard cover
>
>Maybe I didn't explain that very well. At 200KIAS, the
>top surface of my canard cover sticks up about 1/8"
>above the top surface of the fusulage in the middle.
>The cover is over 1/2" thick. The removable dog house
>(4-5" up from the canard) is a common mod which has
>proven to be structurally sound. However, if I'm the
>only one experiencing this, I'll need to look into it
>further. More fasteners were on my list as a speed
>mod.  
>
>Pat
>
>  
>
>>Pat,
>>
>>that would scare the crap out of me!!!  Have you
>>thought about fastening
>>it down better?
>>
>>Scott
>>    
>>
>
>
>--- Scott Derrick <scott at tnstaafl.net> wrote:
>
>  
>
>>>Finally, It looks like you have fasteners running
>>>across the top (front & back) of your doghouse
>>>      
>>>
>>cover.
>>    
>>
>>>I only have screws on the sides of mine and at
>>>      
>>>
>>cruise
>>    
>>
>>>it pops up (bulges) over 1/8" in the center.
>>>      
>>>
>
> 
>
>
>
>		
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