[NSRCA-discussion] Trimming question

[Ken Thompson]

Lance,

Ohhhhh...I'm with you.  I hadn't thought of that scenario.

Ken
  ----- Original Message ----- 
  From: patterndude at comcast.net 
  To: NSRCA Mailing List 
  Sent: Monday, January 30, 2006 1:44 PM
  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" <mrandmrst at comcast.net> 

    > 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 
    > >> 
    > >> -- 
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