REFLECTOR: Velocity 20B update

[John Dibble]

Al Gietzen wrote:

>
>
> Elevator is not at max up position, but I do run out of trim, at about
> 170 KIAS.  Faster than that the trailing edge is up 1 ½” or more, and
> that is just a bit much.  Also, at the low end the canard is stalling
> (gear down) at 75-80 kts, meaning landing speed is 90+, and end up
> with only about ½” trailing edge down on landing.
>
> I'm far from an expert here, but it seems like shortening the canard
> will make the stall problem worse.  Seems like the canard incidence is
> up too much.  When you do a power off stall (flying solo) is the
> bucking strong, mild, or just a mush?  If it is strong-mild, then
> perhaps there is room to reduce incidence.
>
>  I can trim the elevator full trailing edge down (on the ground), but
> not full up – so I am going to put a block between trim spring and the
> torque tube bracket for more trim up
>
> I don't recall the spring arrangement, but I seem to recall that a
> block will move it in the other direction (less trim up).  Maybe
> someone else knows.
>
>
>
> I’d thought about reversing the sparrow strainer, but I’m concerned
> about making it more pitch sensitive.
>
> I did not notice any change in pitch sensitivity when I reversed the
> strainer.
>
>  Steve Murphree is suggesting I should put on a larger sparrow
> strainer.
>
> Seems like this would cause you to run out of trim at an even slower
> IAS because the strainer is working against the spring, pushing the
> elevator down.
>
>  I need to fly some more and sort this out a bit further before taking
> a saw to the canard.
>
> I agree.
>
>
John
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