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Design => Engineering board => Topic started by: TomLaw on July 07, 2012, 04:03:27 PM

Title: Leadout Offset
Post by: TomLaw on July 07, 2012, 04:03:27 PM

Bellcrank deflection versus leadout length change.
Inboard wing: 28"
Bellcrank: 4"
Leadout separation: .5"

Four degree max difference for this arrangement.

Title: Re: Leadout Offset
Post by: Douglas Ames on July 08, 2012, 10:11:50 PM

So if you trim neutral at the handle after finding optimum L/O offset, and assuming you keep your B/C at neutral, will this L/O angularity effect the elev. throw (up vs. dwn deg.) enough to matter?

Title: Re: Leadout Offset
Post by: Howard Rush on July 09, 2012, 02:21:11 AM

Who knows what his definition of offset is?  Who cares what the bellcrank does?

This has been completely determined, with diagrams showing the parameters and their definitions.  What's the point in repeating it halfway?

Title: Re: Leadout Offset
Post by: TomLaw on July 09, 2012, 02:31:25 PM

Reinventing the wheel!

Title: Re: Leadout Offset
Post by: Avaiojet on July 09, 2012, 04:04:00 PM

Quote from: TomLaw on July 09, 2012, 02:31:25 PM

Reinventing the wheel!

Tom,

I don't know who you are, but I like your reply.

You're thinking, "out of the circle!"

That phrase, coined by Avaiojet.  ;D

I have plenty of interest in Bellcrank placement and I know a bit about it.  n~

Always room for conversation.

Charles

Title: Re: Leadout Offset
Post by: Mark Scarborough on July 10, 2012, 08:03:51 AM

Quote from: Avaiojet on July 09, 2012, 04:04:00 PM

I have plenty of interest in Bellcrank placement and I know a bit about it.  n~

Always room for conversation.

Charles

really?

Title: Re: Leadout Offset
Post by: TomLaw on July 10, 2012, 11:30:22 AM

This could turn into a real 'circular argument'.

Title: Re: Leadout Offset
Post by: Trostle on July 10, 2012, 06:49:34 PM

Quote from: Avaiojet on July 09, 2012, 04:04:00 PM

I have plenty of interest in Bellcrank placement and I know a bit about it.  n~

Charles

Tell us more, please! Particularly your knowledge about bellcrank position relative to the CG.

Keith

Title: Re: Leadout Offset
Post by: TomLaw on July 10, 2012, 07:07:13 PM

The bellcrank position relative to the cg is not in this model. I have only worked out the relative mechanical connections  and response of the entire control system. Not knowing the lift and drag coefficients of the various surfaces, and fuselage, as well as the  thrust of the propeller when flying 'yawed out' would be a real handicap to quantifying this behavior.

Title: Re: Leadout Offset
Post by: Brett Buck on July 10, 2012, 08:28:55 PM

Quote from: Trostle on July 10, 2012, 06:49:34 PM

Tell us more, please! Particularly your knowledge about bellcrank position relative to the CG.

   Is there an emoticon for putting my fingers to my temple and pulling the trigger?

   Brett

Title: Re: Leadout Offset
Post by: TomLaw on July 10, 2012, 09:08:18 PM

I could tell you in a qualitative way, if it would make you feel better.

Title: Re: Leadout Offset
Post by: Brett Buck on July 10, 2012, 10:04:05 PM

Quote from: TomLaw on July 10, 2012, 09:08:18 PM

I could tell you in a qualitative way, if it would make you feel better.

   I wasn't responding to you, but to the post I quoted.

    Brett

Title: Re: Leadout Offset
Post by: TomLaw on July 10, 2012, 10:42:37 PM

Too much is just enough!

Title: Re: Leadout Offset
Post by: RandySmith on July 11, 2012, 10:35:55 AM

 HB~> HB~> HB~> HB~>

Quote from: Brett Buck on July 10, 2012, 10:04:05 PM

  I wasn't responding to you, but to the post I quoted.

    Brett

   Is there an emoticon for putting my fingers to my temple and pulling the trigger?

   Brett

Brett

Sorry this is as close as we have...    HB~> HB~> HB~> HB~> HB~> HB~> HB~>

Randy

Title: Re: Leadout Offset
Post by: TomLaw on July 11, 2012, 11:01:49 AM

"Isn't it astonishing that all these secrets have been preserved for so many years just so we could discover them!" Orville Wright