Re: [Flightgear-devel] Re: [Flightgear-users] Stalls
On 08/04/06, Lee Elliott <[EMAIL PROTECTED]> wrote: > > The right way to do it, IMHO, is with the turbulence input, as > > that's what the stall buffet is, after all: turbulence over > > the wings due to flow separation. Modify the number based on > > the current AoA, probably with a little Nasal (maybe also > > modify the C++ to sum the turbulence input from multiple > > properties so as not to confuse the environment subsystem). The stall buffet is very regular compared to environmental turbulence (I just finished flying through 3.6 hours of the latter). All the best, David -- http://www.megginson.com/ --- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid0944&bid$1720&dat1642 ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Re: [Flightgear-users] Stalls
On Friday 07 April 2006 00:19, Andy Ross wrote: > [redirecting to flightgear-devel] > > Lee Elliott wrote: > > However, I think this could faked very convincingly already > > in YASim and probably in JSBSim too, simply by playing with > > mass distribution depending on conditions (anyone want to > > give it a go? > > The right way to do it, IMHO, is with the turbulence input, as > that's what the stall buffet is, after all: turbulence over > the wings due to flow separation. Modify the number based on > the current AoA, probably with a little Nasal (maybe also > modify the C++ to sum the turbulence input from multiple > properties so as not to confuse the environment subsystem). > > If audio is required, then this ought to be tied to turbulence > also, or maybe to instantaneous acceleration changes (a delta > of more than YYY m/s^2 over the last 0.XX seconds triggers the > start of a "whump" sound). > > Andy For some reason I was under the impression that turbulence didn't work with YASim. As it does then I agree that using turbulence would be a better way. LeeE --- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Re: [Flightgear-users] Stalls
Andy Ross wrote: > [redirecting to flightgear-devel] > If audio is required, then this ought to be tied to turbulence also, > or maybe to instantaneous acceleration changes (a delta of more than > YYY m/s^2 over the last 0.XX seconds triggers the start of a "whump" > sound). I have been thinking about the audio aspect for a while, though not in the context of stalls. I think that a broader approach of linking certain sounds such as rattles and whumps to various types of changes in acceleration and some calculated vibration property would add a lot of realism. This would buy you sound from turbulence, violent maneuvers, wheel rolling, and wind shear. Unfortunately I have not had a chance to play with the idea yet, but I do have some handwritten notes that I would be willing to share. It would be nice to have a script for all the models to use that would provide a few easy to link to properties for various mechanical sounds. Josh --- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] Re: [Flightgear-users] Stalls
[redirecting to flightgear-devel] Lee Elliott wrote: > However, I think this could faked very convincingly already in YASim > and probably in JSBSim too, simply by playing with mass distribution > depending on conditions (anyone want to give it a go? The right way to do it, IMHO, is with the turbulence input, as that's what the stall buffet is, after all: turbulence over the wings due to flow separation. Modify the number based on the current AoA, probably with a little Nasal (maybe also modify the C++ to sum the turbulence input from multiple properties so as not to confuse the environment subsystem). If audio is required, then this ought to be tied to turbulence also, or maybe to instantaneous acceleration changes (a delta of more than YYY m/s^2 over the last 0.XX seconds triggers the start of a "whump" sound). Andy --- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
