[NSRCA-discussion] Trimming question

[Dean Pappas]

So True!
Give me a lever long enough, and a place to stand ...

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 Nat Penton
Sent: Tuesday, January 31, 2006 10:09 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Trimming question


John
You are on to something ,but, the biggie is the one with the longest moment 
arm.            Nat

----- Original Message ----- 
From: "John Ferrell" <johnferrell at earthlink.net>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, January 30, 2006 10:14 AM
Subject: Re: [NSRCA-discussion] Trimming question


> My Guess:
> The sum of the drag vectors is well above the vertical CG. You MIGHT be 
> able
> to help the condition with really big wheels generating some drag down 
> low.
> Its anybody's guess what the turbulance might trigger.
>
> The wing is not lifting in knife edge, but it is still draggin'.
>
> John Ferrell
> http://DixieNC.US
>
> ----- Original Message ----- 
> From: "John Pavlick" <jpavlick at idseng.com>
> To: "NSRCA Discussion" <nsrca-discussion at lists.nsrca.org>
> Sent: Friday, January 27, 2006 11:31 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 
>> 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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>
>
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