Re: [Flightgear-devel] RFD: FlightGear and the changing state of air navigation

[David M. <dav...@gm...>]

Thorsten -- that's exactly what I did 15+ years ago, when I found places
that FlightGear didn't do a good job simulating real life (e.g. magnetic
compass errors, VSI lag, VOR scalloping, turbulence, etc. etc.). Instead of
just making one-off tweaks like the consumer sims did, we (as a team)
emulated entire systems like the vacuum, pitot-static, and electrical
systems, so that failures would be realistic.

In the RNAV age, we need to do the same thing; it's just that it's a bigger
job.  FlightGear will still be great for people who want to practice the
mechanical parts of flying (e.g. crosswind wheel landings in a Cub), but
will slip further and further behind for people who want to use it for real
IFR practice.


Cheers, David

On Tue, 4 Jul 2017 at 08:00 Thorsten Renk <tho...@sc...>
wrote:

>
> > In the past, I could practice the hell out of these kinds of details in
> > FlightGear (tuning, twisting, and identifying all the navaids, adding
> > crosswind corrections, etc) so that they were habits when I flew them for
> > real, but I can't practice RNAV procedures like this (or many others).
>
> Then I guess you just need to sit down and code this into your simulated
> plane/instrument. I still don't think this is particularly hard to do -
> dependent on how many details you want it may become tedious after a
> while...
>
> There are a gazillion of automatic and crew-initiated mode transitions in
> the Shuttle, the AP and guidance requirements during launch do not even
> resemble these on final, and yet you can do a whole RTLS abort sequence on
> autopilot where the system automatically transits from mode to mode,
> selects different navigation sources, decides whether to send you on
> S-turn phases to deplete energy before guiding you into the HAC not not,
> selects maximum flown bank angle dependent on abort vs. nominal flight
> rules, reads out what you have selected as aim points, brake options and
> so on and flies accordingly, etc...
>
> All this can be done if you're interested in doing it, and if you get
> stuck at some point, I'm sure I can help you out ;-)
>
>
> * Thorsten
>
>
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