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Talk:Aircraft checklists: Difference between revisions
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: Ah, that's a much more contentious one. The problem, from my point of view, is that our -set.xml files only encode one aircraft state (usually cold-and-dark). To encode (accurately) engines-running or in-flight as the start state, needs some kind of profile system where properties can have different values, and XML / Nasal can be initialised differently. That would make nice in-air starts possible (gear already up, throttles at sane position), as well as offering 'cold, dark and parked' or 'on the active and ready to go' as options. (And end all the per-aircraft 'auto-start' menu options - since they'd become standardised). <ref>{{cite web |url=http://www.mail-archive.com/flightgear-devel@lists.sourceforge.net/msg39672.html |title= Crazy usability suggestion of the day|author=James Turner |date= Tue, 05 Mar 2013 03:39:23 -0800}}</ref>|James Turner}} | : Ah, that's a much more contentious one. The problem, from my point of view, is that our -set.xml files only encode one aircraft state (usually cold-and-dark). To encode (accurately) engines-running or in-flight as the start state, needs some kind of profile system where properties can have different values, and XML / Nasal can be initialised differently. That would make nice in-air starts possible (gear already up, throttles at sane position), as well as offering 'cold, dark and parked' or 'on the active and ready to go' as options. (And end all the per-aircraft 'auto-start' menu options - since they'd become standardised). <ref>{{cite web |url=http://www.mail-archive.com/flightgear-devel@lists.sourceforge.net/msg39672.html |title= Crazy usability suggestion of the day|author=James Turner |date= Tue, 05 Mar 2013 03:39:23 -0800}}</ref>|James Turner}} | ||
== Supporting Startup Situations == | |||
{{cquote|Unfortunately the underlying FDMs (JSBSim and Yasim) also have some limitations in this area - some won't correctly trim the aircraft unless it starts on the ground and stationary. Thorsten Brehm has done some improvements in this area but you still need to experiment to find all the settings for a particular aircraft, unfortunately. | {{cquote|Unfortunately the underlying FDMs (JSBSim and Yasim) also have some limitations in this area - some won't correctly trim the aircraft unless it starts on the ground and stationary. Thorsten Brehm has done some improvements in this area but you still need to experiment to find all the settings for a particular aircraft, unfortunately. | ||
The real solution is each aircraft needs some additional code, which represents the 'in-air' state, or at least some sensible values) - engines running, gear up, fuel pumps on, etc. And then we need a way to request that state. This would be a fairly major addition, but it's something to consider after the next release.<ref>{{cite web |url=http://flightgear.org/forums/viewtopic.php?f=25&t=18466&p=171983&hilit=yasim+jsbsim+thorsten#p171983 |title= Re: starting in the air|author=Zakalawe |date= Fri Dec 07, 2012 12:19 pm}} </ref>|James Turner}} | The real solution is each aircraft needs some additional code, which represents the 'in-air' state, or at least some sensible values) - engines running, gear up, fuel pumps on, etc. And then we need a way to request that state. This would be a fairly major addition, but it's something to consider after the next release.<ref>{{cite web |url=http://flightgear.org/forums/viewtopic.php?f=25&t=18466&p=171983&hilit=yasim+jsbsim+thorsten#p171983 |title= Re: starting in the air|author=Zakalawe |date= Fri Dec 07, 2012 12:19 pm}} </ref>|James Turner}} | ||
{{cquote|Yes, that's correct - we would basically have to expose a handful of feasible startup scenarios/situations and it would be up to the aircraft developer to ensure that those are valid and implemented properly. Just think about all the complex aircraft we have where a shared "start in air" feature would inevitably be broken, such as the concorde or even "just" helicopters... | |||
Stuart has recently demonstrated with his "Aircraft Checklists" system that it is possible to implement such a shared foundation that provides a generic infrastructure that then needs to be parametrized and customized as required for each individual aircraft. And that's something that would be also needed here.<ref>{{cite web |url=http://flightgear.org/forums/viewtopic.php?f=25&t=18466&p=171983&hilit=yasim+jsbsim+thorsten#p172108 |title= Re: starting in the air|author=Hooray |date= Fri Dec 07, 2012 12:19 pm}} </ref>|Hooray}} | |||