Re: [Jsbsim-devel] Helicopter

[Simon J. M. <sim...@go...>]

Hi Sean,

To be honest I wanted to try and see if I could make a helicopter using the
prop code, because I couldn't see why not.

On Sun, 25 Oct 2020 at 21:12, Sean McLeod <se...@se...> wrote:

> Hi Simon
>
>
>
> I’m just getting started again in terms of looking at JSBSim based
> helicopter models.
>
>
>
> Thomas Kreitler improved the FGRotor model between 2010 – 2012.
>
>
>
>
> https://github.com/JSBSim-Team/jsbsim/blob/4840a621dafe1ce64970990ddaec3e86a1c7e082/src/models/propulsion/FGRotor.cpp
>
>
>
> He also added a fairly detailed helicopter model for the AH1S:
>
>
>
>
> https://github.com/JSBSim-Team/jsbsim/tree/4840a621dafe1ce64970990ddaec3e86a1c7e082/aircraft/ah1s
>
>
>
> In general there are very few JSBSim based helicopter models around when I
> last looked.
>
>
>
> Cheers
>
>
>
> *From:* Bill Galbraith <bil...@gm...>
> *Sent:* Sunday, October 25, 2020 8:08 PM
> *To:* 'Development issues' <jsb...@li...>
> *Subject:* Re: [Jsbsim-devel] Helicopter
>
>
>
> Simon,
>
>
>
> I had devoted some brain cells towards that idea a while ago, but never
> implemented it.
>
>
>
> Imagine a point mass, with a point vertical force located above it. At 50%
> collective, vertical force equals weight. Cyclic tilts that vertical force
> fore/aft, left/right. Displacing the cyclic yields a slight loss (sine of
> angle) loss of lift, requiring slightly more collective.
>
>
>
> The painful part comes when you try to fly it with a joystick. When you
> release the joystick, the cyclic returns back to neutral, the aircraft will
> slow to a hover. You basically need a joystick that has a trim lever, or
> allows you to reestablish the trim point.
>
>
>
> Enough to get your brain cells excited?
>
>
>
> Bill
>
>
>
> *From:* Simon Julie Morley via Jsbsim-devel [
> mailto:jsb...@li...
> <jsb...@li...>]
> *Sent:* Sunday, October 25, 2020 1:41 PM
> *To:* Development issues <Jsb...@li...>
> *Cc:* Simon Julie Morley <sim...@go...>
> *Subject:* [Jsbsim-devel] Helicopter
>
>
>
> Anyone here ever done one ?
>
>
>
> Want to talk about it, share knowledge ?
>
>
>
> Simon
>
>
>
>
>
>
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