On Friday 07 June 2002 3:54 pm, James Turner wrote: > As a result of playing with with routes / flight plans, one thing I > forsee in the future is driving navigation instruments from a non-radio > source (i.e something like the NAV / GPS toggle which I'm led to believe > is common in many GA craft with a GPS fitted). > > Now, the problem is that such systems (as far as I can tell) expect to > drive a CDI bar on the HSI based on distance (in nm) off course. So, I > have two problems: > > - we don't have an HSI. I'm pretty sure I could knock something up, but
Yes we do. Try the c310. > perhaps someone with some actual artistic talent ought to have a go. > Bonus points if it supports multiple sources (eg VOR + ADF or 2 VORs), > or an integrated glide slope display. Mechanical or digital, either is > fine with me. As I said, I don't think there's anyespecial problem > building such a thing with the current layers model in the panel (except > that the HSI gauge will be more complex than usual), I just don't have > much experience doing such a thing. > > - I'm not clear how to generate (in radiostack.cxx) the course deviation > in nm based on the VOR signal. How is this done in real life (google > didn't turn up any useful docs)? > > I can imagine a way to calculate the distance off course *if* the VOR > has DME co-located, since you use the heading deviation (which is what > the current code deals with, and the current gauges display), and then > do some trig to find the distance deviation. But this doesn't seem > 'right', unless HSIs are a lot more complex than I thought (and they > used to be mechanical, I'm pretty sure) > > H&H > James > > > _______________________________________________ > Flightgear-devel mailing list > [EMAIL PROTECTED] > http://mail.flightgear.org/mailman/listinfo/flightgear-devel _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
