jsbsim-users

[Jsbsim-users] Canard aircraft

[Bill G. <bi...@ho...>]

Well, it's been pretty quiet here lately..

 

So, has anyone done a canard configuration aircraft in JSBSim?  I've been
asked to help someone with a Long-EZ. Just wondered if I was in for anything
exciting.

 

Thanks,

Bill

Re: [Jsbsim-users] Canard aircraft

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

Hi Bill

There is nothing special about a canard as far as JSBSim is concerned.

In flight there is a problem if the main wing stalls before the canard 
surface. If this happens this results in  is a nose-up pitch, which 
deepens the stall.

Many years ago (1970)  I produced a set of aero data and simulated the 
Lockspeiser LDA01 https://www.youtube.com/watch?v=_AWw0_Osl5U on our 
company flight simulator (BAC Weybridge) .  I produced the aero data by 
hand (i.e.using  graph paper and slide rule) using the RAeS data sheets, 
which were the UK equivalent of paper Datcom.

David  Lockspeiser, the constructor/designer/test pilot of this aircraft 
was a colleague at work and was one of the team of test pilots available 
to me for company work on the simulator.   My predictions were a 
reasonable match to the wind tunnel results, and to the aircraft 
handling when he flew it..

Alan

Re: [Jsbsim-users] Canard aircraft

[Bill G. <bil...@gm...>]

Thank you sir. Hope you are well.

Bill

-----Original Message-----
From: Alan Teeder [mailto:ajt...@v-...] 
Sent: Friday, November 29, 2019 7:51 PM
To: jsb...@li...
Subject: Re: [Jsbsim-users] Canard aircraft

Hi Bill

There is nothing special about a canard as far as JSBSim is concerned.

In flight there is a problem if the main wing stalls before the canard
surface. If this happens this results in  is a nose-up pitch, which deepens
the stall.

Many years ago (1970)  I produced a set of aero data and simulated the
Lockspeiser LDA01 https://www.youtube.com/watch?v=_AWw0_Osl5U on our company
flight simulator (BAC Weybridge) .  I produced the aero data by hand
(i.e.using  graph paper and slide rule) using the RAeS data sheets, which
were the UK equivalent of paper Datcom.

David  Lockspeiser, the constructor/designer/test pilot of this aircraft was
a colleague at work and was one of the team of test pilots available to me
for company work on the simulator.   My predictions were a reasonable match
to the wind tunnel results, and to the aircraft handling when he flew it..

Alan




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Re: [Jsbsim-users] Canard aircraft

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

Bill

Yes, all is well. I hope that is the same with you.

On this subject, I should mention that the aero equations  (i.e. CL, CD, 
CM and derivatives for everything else) that I used were identical to 
those used in a standard JSBSim xml file - as produced by your Datcom, 
or by Aeromatic. Nothing has changed over that time. ;)

Alan

Re: [Jsbsim-users] Canard aircraft

[Joshua W. <jo...@gm...>]

So someone has flown other example aircraft with jsbsim and ardupilot other
than the Jasper?

On Fri, Nov 29, 2019, 8:25 PM Alan Teeder <ajt...@v-...> wrote:

> Bill
>
> Yes, all is well. I hope that is the same with you.
>
> On this subject, I should mention that the aero equations  (i.e. CL, CD,
> CM and derivatives for everything else) that I used were identical to
> those used in a standard JSBSim xml file - as produced by your Datcom,
> or by Aeromatic. Nothing has changed over that time. ;)
>
> Alan
>
>
>
> _______________________________________________
> Jsbsim-users mailing list
> Jsb...@li...
> https://lists.sourceforge.net/lists/listinfo/jsbsim-users
>

Re: [Jsbsim-users] Canard aircraft

[Michael D. <mik...@gm...>]

If it would be of any use, my model has a simplistic folding canard.

https://gitlab.com/mdanil/Tu-144/blob/master/Tu-144-jsbsim/aero.xml#L1200

Mike

On Fri, Nov 29, 2019 at 05:53:25PM -0500, Bill Galbraith wrote:
> Well, it's been pretty quiet here lately..
> 
> So, has anyone done a canard configuration aircraft in JSBSim?  I've been
> asked to help someone with a Long-EZ. Just wondered if I was in for anything
> exciting.
> 
> Thanks,
> Bill

Re: [Jsbsim-users] Canard aircraft

[Jonathan R <leg...@gm...>]

The Ja37 Viggen as well as other fighter aircraft - can't remember which (I
think the raffle?) - have canards also.

Jonathan

On Saturday, November 30, 2019, Michael Danilov <mik...@gm...>
wrote:

> If it would be of any use, my model has a simplistic folding canard.
>
> https://gitlab.com/mdanil/Tu-144/blob/master/Tu-144-jsbsim/aero.xml#L1200
>
> Mike
>
> On Fri, Nov 29, 2019 at 05:53:25PM -0500, Bill Galbraith wrote:
> > Well, it's been pretty quiet here lately..
> >
> > So, has anyone done a canard configuration aircraft in JSBSim?  I've been
> > asked to help someone with a Long-EZ. Just wondered if I was in for
> anything
> > exciting.
> >
> > Thanks,
> > Bill
>
>
> _______________________________________________
> Jsbsim-users mailing list
> Jsb...@li...
> https://lists.sourceforge.net/lists/listinfo/jsbsim-users
>

Re: [Jsbsim-users] Canard aircraft

[Steve B. <slb...@gm...>]

I also had been tossing around doing the Long-EZ. i would love to be
updated on how your project is coming along. Bill do you have anything
started on github or souceforge?

On Fri, Nov 29, 2019 at 5:13 PM Bill Galbraith <bi...@ho...> wrote:

> Well, it’s been pretty quiet here lately….
>
>
>
> So, has anyone done a canard configuration aircraft in JSBSim?  I’ve been
> asked to help someone with a Long-EZ. Just wondered if I was in for
> anything exciting.
>
>
>
> Thanks,
>
> Bill
> _______________________________________________
> Jsbsim-users mailing list
> Jsb...@li...
> https://lists.sourceforge.net/lists/listinfo/jsbsim-users
>

Re: [Jsbsim-users] Canard aircraft

[<da...@ho...>]

Steve,

 

No, I haven’t started anything towards that end, like a github or sourceforge. I support an airplane design program called Datcom that is used for preliminary design of aircraft. One of my users built a model for the Long EZ, and asked for my help. She was unable to get it flying in JSBSim, and I’ve never had anyone do a canard airplane in Datcom, so I’ve always been interested in seeing one done. I just haven’t cared enough to do it myself. She made some mistakes, and Datcom has a couple minor errors in it for canard aircraft. I’m digging through them, but I just can’t seem to get the Long EZ model to fly in JSBSim. I was hoping to look at another model that was flying, to try to pinpoint where I am having problems.

 

If you have a model flying in JSBSim but are in need of some more refined aero coefficients, she might be willing to share her model towards the common good. I wouldn’t release her model without her approval, but would be happy to look your model over if you have one flying, and of course not share it with her unless you give me the oka.

 

Bill

 

 

 

 

From: Steve Brown [mailto:slb...@gm...] 
Sent: Monday, December 02, 2019 6:18 PM
To: JSBSim user questions <jsb...@li...>
Subject: Re: [Jsbsim-users] Canard aircraft

 

I also had been tossing around doing the Long-EZ. i would love to be updated on how your project is coming along. Bill do you have anything started on github or souceforge?

 

On Fri, Nov 29, 2019 at 5:13 PM Bill Galbraith <bi...@ho... <mailto:bi...@ho...> > wrote:

Well, it’s been pretty quiet here lately….

 

So, has anyone done a canard configuration aircraft in JSBSim?  I’ve been asked to help someone with a Long-EZ. Just wondered if I was in for anything exciting.

 

Thanks,

Bill

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