Re: [Flightgear-devel] Gear transit times

[Torsten D. <To...@t3...>]

Am 30.08.2012 03:51, schrieb cas...@co...:
> Hi,
>
> Is it possible to specify gear up and down transit times for each gear?
> In real airplanes the gear never ( well rarely, maybe ) sequence in
> perfect unison.  In reviewing the xml files for the 737, I note there
> are transit times defined for each flap position, but the kinematics for
> the gear is only a single value for up or down based on gear selection
> state.
>
> Is this something in Nasal?  or native code or something in JSBsim?

I use the <actuator> in JSBsim to model the gear in the SenecaII, using 
the rate_limit property implement the transit time.

The flightgear autopilot system has a so called noise-spike filter that 
can model transit times.

The flightgear xml based autopilot system can run at FDM rate or at 
frame rate, btw. Using a <autopilot> tag in your aircraft's -set.xml 
adds the autopilot at fdm rate, using a <property-rule> runs the same 
config at frame rate.

Torsten