REFLECTOR: Vortex Generators

Brian Michalk michalk at awpi.com
Mon May 19 21:00:49 CDT 2014


When I am alone in the plane, it's about 70 kts.
As I move the CG forward the plane doesn't stall, it just mushes. The 
only way to stall it is while in a turn.
As I move CG forward the Vm increases (minimum speed at which I can 
maintain altitude), which I add 10 kts to and use as my approach speed.

On 05/19/2014 05:57 PM, Jerry Teitsma wrote:
>
> Brian - What is your stall speed?
>
> Jerry Teitsma
>
> N241JT
>
>
> ------------------------------------------------------------------------
> *From: *"Laurence Coen" <lwcoen at hotmail.com>
> *To: *"Reflector" <reflector at tvbf.org>
> *Sent: *Monday, May 19, 2014 10:09:56 AM
> *Subject: *Re: REFLECTOR: Vortex Generators
>
> Brian,
>
> The max forward CG is 115.75".  If you are at 115" or less then that's 
> your
> problem, not something wrong with the plane.  If I load 400# plus in the
> front I still won't reach the forward CG.  You should be able to hold the
> nose up at 70 KIAS.
>
> Larry Coen
> N136LC
>
> --------------------------------------------------
> From: "Brian Michalk" <michalk at awpi.com>
> Sent: Sunday, May 18, 2014 10:42 PM
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Subject: REFLECTOR: Vortex Generators
>
> > After doing my foreward CG tests, I find that my biggest concern is
> > running out of elevator authority when flaring to land.  Flying in my
> > buddies V, and also the trainer, I don't recall speeds as high as I am
> > maintaining on final.  At 110mph (96 kts) final, by the time I land, I
> > suppose I'm down to 100mph, and at forward CG of ... well, I can't 
> find my
> > spreadsheet at the moment, but it's probably close to 115 inches.
> >
> > My question is I am wondering if VG's on the canard will give me some
> > better elevator authority.  I like not having to worry about 
> breaking them
> > off now, so if the bother is worth it, I'll try them.
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