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Announcing NEW Boeing 777 'Seattle' - Pre-Release

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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby NewsDude » Wed Nov 06, 2019 7:24 pm

I'm just wondering, will there ever be a similar project for other Boeing aircraft? Like the 747, for instance?
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby Isaak » Wed Nov 06, 2019 7:44 pm

I know Gijs is doing some work on the 747, but it takes lots of time to develop in and he has a very busy life. There's still a lot to do on the 777 too, I am even considering to downgrade the current rating because in my opinion it doesn't reflect the current state of the aircraft: the cockpit model is nice, but a lot of functionality and systems have yet to be developed. The exterior model needs improvement, the FDM behaves acceptable, but quite not realistic in all scenarios, the fuel consumption seems to exceed real life consumption... Still a lot of work to do as you can see :)
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby V12 » Wed Nov 06, 2019 9:11 pm

NewsDude wrote in Wed Nov 06, 2019 7:24 pm:I'm just wondering, will there ever be a similar project for other Boeing aircraft? Like the 747, for instance?

If You want perfectly developed airplane in FG, try Airbus A320 family (https://github.com/legoboyvdlp/A320-family). If You want Boeing and 777 is not enough, You have problem. I solved it with FSX + PMDG 737, but there are other alternatives - Prepar3D+PMDG 747 (better than too old FSX), or X-Planes + Zibbo737.
Fly high, fly fast - fly Concorde !
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby Gijs » Wed Nov 06, 2019 9:30 pm

NewsDude wrote in Wed Nov 06, 2019 7:24 pm:I'm just wondering, will there ever be a similar project for other Boeing aircraft? Like the 747, for instance?

After a couple of years of minimal development, there's actually been quite a lot of work on the 747's flights dynamics this year: https://sourceforge.net/p/flightgear/fg ... ft/747-400 There's still some final tuning to be done, but overall we're approaching a pretty impressive model with lots of small aerodynamic details.

Help is always welcome though, so feel free to contact me if you're interested in getting involved! There are many areas to work on, depending on your skill set and interest. Best to send a pm then, as this topic is about the 777 ;-)
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby legoboyvdlp » Wed Nov 06, 2019 9:51 pm

V12 wrote in Wed Nov 06, 2019 9:11 pm:If You want perfectly developed airplane in FG, try Airbus A320 family


It's nowhere near perfect - although I do appreciate your comments about it please do not use it to denigrate other aircraft when people like Isaak and Gijs are doing a fantastic job.
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby V12 » Thu Nov 07, 2019 8:24 am

I don't know better modern liner in FG :wink:
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby AAL545 » Fri Nov 08, 2019 3:19 pm

I fly the B-777 and I love it. It needs a little work though to compare with realistic behavior.
For example, and this is a request by the way, the response when turning with the heading knob is too quick, in real life there is a delay.
So I'm thinking in real life it takes time to move the aileron therefore the jet can't roll/turn right away.
When I turn with the yoke it's not as obvious because I don't jerk the yoke from center to whatever, but when I turn with the knob from lets say heading 360 to 40 it seems the aileron doesn't move slowly,
not sure how this can be implemented in the code other then a delay.
I could do this myself if someone would show me where and what to enter, I'd test it and report the results.
Of course I'd have to download the aircraft from sourceforge and put it in a different folder.



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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby CaptB » Fri Nov 08, 2019 4:42 pm

AAL545 wrote in Fri Nov 08, 2019 3:19 pm:I could do this myself if someone would show me where


looking at APpanel.xml lines 1841-1893 would be a good starting point.
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby AAL545 » Fri Nov 08, 2019 8:20 pm

looking at APpanel.xml lines 1841-1893 would be a good starting point.


I'm curious, what does the step function do?
If it's what I'm thinking then changing it from >1< to >0.01< and >-1< to >-0.01< would make it less responsive. Correct?


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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby CaptB » Fri Nov 08, 2019 9:14 pm

AAL545 wrote in Fri Nov 08, 2019 8:20 pm:I'm curious, what does the step function do?
If it's what I'm thinking then changing it from >1< to >0.01< and >-1< to >-0.01< would make it less responsive. Correct?


No, if you change it to 0.01 it will increment the "autopilot/settings/heading-bug-deg" property by 0.01 degree if you set it to 5 it will increment it by 5 degrees. The property indicates the default autopilot is used, I suppose you'd have to write some nasal to have the property set gradually or write a custom AP.

Correct me if I'm wrong, but I don't think the command property-interpolate could be used here?
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby AAL545 » Fri Nov 08, 2019 11:14 pm

No, if you change it to 0.01 it will increment the "autopilot/settings/heading-bug-deg" property by 0.01 degree if you set it to 5 it will increment it by 5 degrees. The property indicates the default autopilot is used, I suppose you'd have to write some nasal to have the property set gradually or write a custom AP.



You are correct and I thought of this after a coffee, strange how that happens, anyway this only affects the action of the knob, what we need to do is change the affect of the aileron itself not the knob.
I change the Aileron and Elevator factor from 1 to 0.6 for my yoke in .fgfs/ Input/joysticks so that it's not as responsive, but what I'm looking for is the code that controls the Aileron via the knob and not the yoke.
If this isn't possible then maybe I'd have to enter a time delay in the "autopilot/settings/heading-bug-deg" script.
I read an article a while ago how to enter a delay but I can't find it anymore.



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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby CaptB » Sat Nov 09, 2019 8:49 am

AAL545 wrote in Fri Nov 08, 2019 11:14 pm:If this isn't possible then maybe I'd have to enter a time delay in the "autopilot/settings/heading-bug-deg" script.
AAL4955


I'm not familiar with autopilots in FG, but as I mentioned before, It's looks to me that the generic autopilot is handling it this way, maybe it could be altered with filters? I have no idea, if someone more experienced with AP would point me at the right direction I'd take a look.

Edit: There's a way to simulate servos described here: http://wiki.flightgear.org/Howto:Design_an_autopilot#Simulating_servos however I have made a short flight and the trurning behaviour doesn't seem to be as immediate as you describe.
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby CaptainCrazyAviation » Wed Nov 13, 2019 9:06 am

Just wanted to tell you that some of the buttons in the 777-300ER aren't able to click and that there are some extra buttons and some missing buttons. For example, I believe on the engine switch, there are only 2 options - start and norm no con. The wiper has no effect, the emergency lights' switch does not move when clicking. I've also realised that the navigation display gets stuck
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby legoboyvdlp » Wed Nov 13, 2019 10:36 am

What console error do you see with the navigation display error - sounds like yet another reoccurrence of the Mapstructure errors!
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Re: Announcing NEW Boeing 777 'Seattle' - Pre-Release

Postby Isaak » Wed Nov 13, 2019 6:05 pm

CaptainCrazyAviation wrote in Wed Nov 13, 2019 9:06 am:Just wanted to tell you that some of the buttons in the 777-300ER aren't able to click and that there are some extra buttons and some missing buttons. For example, I believe on the engine switch, there are only 2 options - start and norm no con. The wiper has no effect, the emergency lights' switch does not move when clicking. I've also realised that the navigation display gets stuck


I won't have time anytime soon to do something about this, but please do feel free to do some work yourself and I 'll happily commit it when it matches RL documentation. The 777 is far from complete, it 'll take much more time and knowledge than I currently have to get in a near to complete state.
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