Re: [Jsbsim-devel] aerorp

[Alan T. <ajt...@v-...>]

FG3.0 should be the same as latest git for these calculations.
Have you tried looking at the property browser to check that /fdm/jsbsim/metrics/aero-rp-x-in and /fdm/jsbsim/inertia/cg-x-in change when you expect them to?
Your code example will produce no noticeable effects in flight as the cg and aero moment changes follow and cancel each other.
Parked on the ground the will be little or no aero force, so the aircraft should be seen to move on the undercarriage as the cg is moved.

Alan

From: Simon Julie Morley 
Sent: Sunday, May 17, 2015 2:21 PM
To: Development issues 
Subject: Re: [Jsbsim-devel] aerorp

No not standalone...

FG 3.0.0. here

has there been a change since this release does anyone know ?

On 17 May 2015 at 11:59, Alan Teeder <ajt...@v-...> wrote:

  I have just made a quick test with my WIP. This uses the latest git version of Flightgear.
  When I write to /fdm/jsbsim/metrics/aero-rp-x-in the nose goes up or down as expected.

  Are you using JSBSim standalone , if so which version?

  Alan


  From: Simon Julie Morley 
  Sent: Sunday, May 17, 2015 10:04 AM
  To: Development issues 
  Subject: Re: [Jsbsim-devel] aerorp

  Sorry,butI'm still unable to adjust the aerop values 'on the fly'..... any help would be appreciated...


    <channel name="aerorp">
     <pure_gain name="metrics/aero-rp-x-in">
      <gain>1</gain>
      <input>inertia/cg-x-in</input>
      <output>metrics/aero-rp-x-in</output>  
     </pure_gain>
     <pure_gain name="metrics/aero-rp-z-in">
      <gain>1</gain>
      <input>inertia/cg-z-in</input>
      <output>metrics/aero-rp-z-in</output>  
     </pure_gain>   
          </channel> 

  On 9 May 2015 at 14:26, Simon Julie Morley <sim...@go...> wrote:

    Cheers Alan,

    A lot happens in a year....

    The reason I asked was that I'm unable to adjust this value from with FG.

    Simon.

    On 9 May 2015 14:24, "Alan Teeder" <ajt...@v-...> wrote:

      They are read/write  in the property tree.

      BTW, you asked the same question last year and this provoked a debate about the pros and coms of moving what is normally considered a fixed reference point about which all aero forces and moments are calculated.

      Alan

      From: Simon Julie Morley 
      Sent: Saturday, May 09, 2015 12:34 PM
      To: Development issues 
      Subject: [Jsbsim-devel] aerorp


      metrics/aero-rp-x-in 

      metrics/aero-rp-y-in 

      metrics/aero-rp-z-in 

      It's the last piece in the jigsaw for me... I need to be able to adjust these values in flight

      Can this be done ?
      if not at present can I ask for a change to allow it.

      regards

      Simon


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------------------------------------------------------------------------------
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  One dashboard for servers and applications across Physical-Virtual-Cloud 
  Widest out-of-the-box monitoring support with 50+ applications
  Performance metrics, stats and reports that give you Actionable Insights
  Deep dive visibility with transaction tracing using APM Insight.
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  _______________________________________________
  Jsbsim-devel mailing list
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  ------------------------------------------------------------------------------
  One dashboard for servers and applications across Physical-Virtual-Cloud
  Widest out-of-the-box monitoring support with 50+ applications
  Performance metrics, stats and reports that give you Actionable Insights
  Deep dive visibility with transaction tracing using APM Insight.
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  _______________________________________________
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--------------------------------------------------------------------------------
------------------------------------------------------------------------------
One dashboard for servers and applications across Physical-Virtual-Cloud 
Widest out-of-the-box monitoring support with 50+ applications
Performance metrics, stats and reports that give you Actionable Insights
Deep dive visibility with transaction tracing using APM Insight.
http://ad.doubleclick.net/ddm/clk/290420510;117567292;y 


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_______________________________________________
Jsbsim-devel mailing list
Jsb...@li...
https://lists.sourceforge.net/lists/listinfo/jsbsim-devel
_______________________________________________
The JSBSim Flight Dynamics Model project
http://www.JSBSim.org
_______________________________________________