REFLECTOR: Vortex Generators

Brian Michalk michalk at awpi.com
Tue May 20 07:40:06 CDT 2014


I discovered that too.

I was having controllability issues at the slower speeds, yes using 
mostly rudder.  I added the lower winglets, and the plane is much easier 
to fly on slow final.

It was what I would call a "handfull".  Now, it's on rails on final.

On 05/20/2014 06:50 AM, john at velocityaircraft.com wrote:
> Make sure you are getting full rudder throw.  They are good down to 
> 35kts, ailerons will be very sloppy below 90kts.  The SE models do 
> better maintaining aileron feel at low speeds but the XL and 173's 
> need a lot of rudder.
>
> John
>
>     ------------------------------------------------------------------------
>     -----Original Message-----
>     From: "Brian Michalk" <michalk at awpi.com>
>     To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>     Date: 05/19/14 22:04
>     Subject: Re: REFLECTOR: Vortex Generators
>
>     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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>
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>
>
>
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