[NSRCA-discussion] Trimming question

Tue Jan 31 04:43:08 AKST 2006

I don't know how much you are willing to chop the plane, but it would be interesting to try dihedral in the horizontal stab.

  Bob R.

Dowayne Gould <iflyrc24 at gmail.com> wrote:
  If you guys get this figured out without sawing the wing in two and
installing a pattern plane in the void I will try it.
I have a 60 size Ultra Stick that exhibits the same flight tendencies.
I tried mixing them out but made the plane not flyable other than
knife edge. I came to the conclusion that the Sticks were not designed
to fly with the wing tips pointed at the ground.
And yes the pull to the canopy is the same with either wing up.
Dowayne

On 1/30/06, tommu wrote:
> Has it been ask if the problem is the same regardless of what side is down
> there? This could mean a great deal if it is different.
>
> Tom Mullen
> MIS Manager
> 10 N Robinson
> PO Box 677
> City of Cleburne, Texas 76033-0677
> tommu at cleburne.net
> V 817-645-0977
> F 817-645-2789
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf
> Of Ken Thompson
> Sent: Monday, January 30, 2006 3:36 PM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] Trimming question
>
> Hello Dean,
>
> This is why I read all of the list's posts...I like to learn new things.
>
> The sub-fin would go where, under the stab or closer to the nose? I would
> think the placement would make a huge difference in the effect.
>
> Ken
> ----- Original Message -----
> From: Dean Pappas
> To: NSRCA Mailing List
> Sent: Monday, January 30, 2006 1:53 PM
> Subject: Re: [NSRCA-discussion] Trimming question
>
> Hi Gang, Hi Ken,
> The enswer probably lies in a combo of what Lance and Ron offered.
> How much is your buddy willingg to cut or add to fix the problem.
> A ventral strake/subfin will be a great experiment, and I am sure that a
> bunch of us would like to hear the results.
> Raising the stab would be terribly invasive, and also interesting.
> Make sure the ship flies with a styraight elevator first.
> later,
> Dean
>
>
>
> Dean Pappas
> Sr. Design Engineer
> Kodeos Communications
> 111 Corporate Blvd.
> South Plainfield, N.J. 07080
> (908) 222-7817 phone
> (908) 222-2392 fax
> d.pappas at kodeos.com
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf
> Of patterndude at comcast.net
> Sent: Monday, January 30, 2006 1:44 PM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] Trimming question
>
> Ken,
> Not always. In level flight the neg incidence will require up trim. In KE
> flight, the tail has an increased weighting in the balance of forces and
> this uptrim can be more than needed.
> --Lance
>
>
> --
> District 6 AVP
> www.aeroslave.com
>
> -------------- Original message --------------
> From: "Ken Thompson" 
>
> > Wouldn't negative incidence cause it to push to the gear, not the canopy?
> >
> > Ken
> > ----- Original Message -----
> > From: "Lance Van Nostrand"
> > To: "NSRCA Mailing List"
> > Sent: Monday, January 30, 2006 12:40 AM
> > Subject: Re: [NSRCA-discussion] Trimming question
> >
> >
> > > Not many responses to this one, but here's my thought. The wing
> incidence
> > > is way negative and the CG is aft. I got myself into that situation once
> > > and didn't catch it for a while. Inverted flight was fine but the plane
> > > was
> > > squirrely and the up elv trim was more effective in knife edge than
> level
> > > flight, resultin! g in canopy pull.
> > > --Lance
> > >
> > > ----- Original Message -----
> > > From: "John Pavlick"
> > > To: "NSRCA Discussion"
> > > Sent: Friday, January 27, 2006 10:31 PM
> > > Subject: [NSRCA-discussion] Trimming question
> > >
> > >
> > >> Ok here's a good one. The owner of the L.H.S. asked me what I thought
> > >> about
> > >> this and I couldn't come up with a good answer. He has a Hangar 9 Ugly
> > >> Stik - the real big one. I can't remember exactly what it's called.
> Guess
> > >> it
> > >> has a gas motor in it. It's big. He says he has it trimmed so it will
> fly
> > >> inverted with just a very slight bit of down elevator (almost none).
> Ok,
> > >> so
> > >> it's not nose heavy, maybe even a little tail heavy. Now, when he flies
> > >&! gt; it
> > >> knife edge (either side) it pulls severely to the canopy. I mean like
> it
> > >> will fly a complete circle. It needs almost 3/4 down elevator to fly
> > >> straight. It's beyond a mix - fix. He also says that it has a bit of
> roll
> > >> couple when flying level (not knife edge) but it doesn't pitch severely
> > >> up
> > >> or down under these conditions. Any thoughts? I guess you can rule out
> > >> C.G.
> > >> because if anything it should pull to the belly considering how it's
> > >> trimmed
> > >> to fly level upright and inverted. I haven't flown it so I can't add
> too
> > >> much more. He builds OK so I don't think there's anything way out of
> > >> alignment, but again I haven't seen it yet so maybe there is. What
> should
> > >> I
> > >> look for if I get my hands on it to try and help him?
> > >>
> > >> John Pavlick
> > >> http://www.idseng! .com
> > >>
> > >> --
> > >> No virus found in this outgoing message.
> > >> Checked by AVG Free Edition.
> > >> Version: 7.1.375 / Virus Database: 267.14.23/243 - Release Date:
> 1/27/06
> > >>
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