Board index FlightGear Development Aircraft

New aircraf: Pipistrel Panthera

Questions and discussion about creating aircraft. Flight dynamics, 3d models, cockpits, systems, animation, textures.

Re: New aircraf: Pipistrel Panthera

Postby it0uchpods » Wed Sep 26, 2018 1:43 pm

"Decent" is debatable. It provides a great starting point, but I've found it needs MUCH tweaking before it flies like the real plane (coming from personal experience).

Yes, I agree, he should switch to AeromatiC++, but he should also adjust it afterwards, so it flies better.

Kind Regards,
Josh
it0uchpods/WTF411

FGFS Aircraft Developer
Lead Programmer at it0uchpods Design Group
Download High Quality Aircraft from it0uchpods Hangar
User avatar
it0uchpods
 
Posts: 3524
Joined: Tue Oct 06, 2015 12:51 pm
Version: 2018.2.1
OS: Windows 10 x64

Re: New aircraf: Pipistrel Panthera

Postby D-ECHO » Wed Sep 26, 2018 1:59 pm

@hardba11, would be glad to help you :) Also see Discord PM
User avatar
D-ECHO
 
Posts: 1354
Joined: Sat May 09, 2015 12:31 pm

Re: New aircraf: Pipistrel Panthera

Postby erik » Wed Sep 26, 2018 9:05 pm

it0uchpods wrote in Wed Sep 26, 2018 1:43 pm:"Decent" is debatable. It provides a great starting point, but I've found it needs MUCH tweaking before it flies like the real plane (coming from personal experience).

That's why I called it decent and not 'great' or 'perfect'.

But for the low number of input parameters it's still decent. And I'm not saying that because I wrote it but because of the math used which was not invented by me at all.

Erik
erik
 
Posts: 1503
Joined: Thu Nov 01, 2007 1:41 pm

Re: New aircraf: Pipistrel Panthera

Postby Alant » Wed Sep 26, 2018 9:57 pm

Aeromatic produces a generic model, but it is surprisingly good.
The next step up is to try Datcom http://www.holycows.net/datcom/ which uses actual aircraft dimensions. Aeromatic actually uses simplified models taken from Datcom and similar documents.
The stage after that is to use one of the Aerodynamic flow models e.g. OpenVSP http://openvsp.org/download.php or Panukl https://www.meil.pw.edu.pl/add/ADD/Teac ... are/PANUKL
Any of these require some knowlege of aerodynamics.

Equally important, and often neglected, are getting good estimates of weight, centre of gravity and roll, pitch and yaw inertias. E.G. If all of your aerodynamics are correct, but your estimated roll moment of inertia is double that of the real aircraft, then the roll response wil be very sluggish.

Alan
Alant
 
Posts: 745
Joined: Wed Jun 23, 2010 5:58 am
Location: Portugal
Callsign: Tarnish99
Version: from Git
OS: Windows 10

Re: New aircraf: Pipistrel Panthera

Postby hardba11 » Thu Sep 27, 2018 6:50 pm

thanks for your answers !

datcom seems interesting,
the G1000 glass cockpit is not the one used in the panthera, it could be adapted but it is to difficult for me ... does anyone want to try ? ;)

next steps of developments :
- I continue some improvments in the cockpit, and a "very light glass cockpit" (waiting for someone to take care of a realistic glass cockpit)
- D-ECHO will try doing a jsb fdm
- once the fdm is done, an autopilot could be done
- after that, some exterior animations and some effects will be added

regards

Nico
contribs: mirage2000-5, statics models, LFRV - WIP: new aircraft, TFFJ - hobby: world tour in flightgear
hardba11
 
Posts: 155
Joined: Tue May 27, 2014 5:56 pm
Location: Paris - FR
Callsign: F-HRDB
Version: 2018.2.3
OS: windows and debian

Re: New aircraf: Pipistrel Panthera

Postby hardba11 » Wed Oct 03, 2018 8:11 pm

Hello,

here are the latest work done on panthera :
- first version of jsbsim thanks to D-ECHO
- choice of 2 fdm : yasim and jsbsim
- instruments improvments
- clickable gear, flaps
- clickable inhg button on altimeter
- an animated slip skid ball on the attitude indicator
- the attitude indicator made in nasal+canvas (as the real one is a lcd screen)
- the screen of glass cockpit : some tests done by D-ECHO (not yet available)
- a lightweight glass cockpit

next steps :
- improve lightwight glass cockpit : add horizontal situation indicator
- jsbsim improvments
- add missing instruments and switchs on the panel
- add lightwight right screen with engine gauges (canva+nasal)


download here : https://github.com/hardba11/fg-aircraft-panthera


Image


regards
Nico
contribs: mirage2000-5, statics models, LFRV - WIP: new aircraft, TFFJ - hobby: world tour in flightgear
hardba11
 
Posts: 155
Joined: Tue May 27, 2014 5:56 pm
Location: Paris - FR
Callsign: F-HRDB
Version: 2018.2.3
OS: windows and debian

Re: New aircraf: Pipistrel Panthera

Postby hardba11 » Sat Oct 20, 2018 10:11 am

Hello,

I'm happy to announce a lot of work has been done in the new version :
- improve lightweight left glass cockpit : added horizontal situation indicator
- added lightweight right screen with engine gauges (canva+nasal)
- added rudder and stick
- improved cockpit textures
- added missing switches
- clickables some buttons, switches and levers
- instruments light and floodlight

Image

last version here : https://github.com/hardba11/fg-aircraft-panthera

next steps :
- complete lightweight canvas screens (vertical speed, nav info, heading bug)
- exterior improvments
- fdm improvments
if you want to help, look at this : http://wiki.flightgear.org/Pipistrel_Panthera#Development_status_.2F_Roadmap

regards
Nico
contribs: mirage2000-5, statics models, LFRV - WIP: new aircraft, TFFJ - hobby: world tour in flightgear
hardba11
 
Posts: 155
Joined: Tue May 27, 2014 5:56 pm
Location: Paris - FR
Callsign: F-HRDB
Version: 2018.2.3
OS: windows and debian

Re: New aircraf: Pipistrel Panthera

Postby it0uchpods » Sat Oct 20, 2018 12:52 pm

Nice job! I'll give it a try later today.

Josh
it0uchpods/WTF411

FGFS Aircraft Developer
Lead Programmer at it0uchpods Design Group
Download High Quality Aircraft from it0uchpods Hangar
User avatar
it0uchpods
 
Posts: 3524
Joined: Tue Oct 06, 2015 12:51 pm
Version: 2018.2.1
OS: Windows 10 x64

Re: New aircraf: Pipistrel Panthera

Postby it0uchpods » Sun Oct 21, 2018 4:45 pm

Feedback:
* FDMs:
Both Yasim and JSBsim fly very bizarre, not plausible at all, sorry. Needs lots of work.

Canvas:
Display update rate needs to be increased, PFD is very jerky
Displays freeze when using time warp

3D:
Propeller is "levitating"
aircraft is "levitating" above wheels

Other than that, it's coming along nicely.

Kind Regards,
Josh
it0uchpods/WTF411

FGFS Aircraft Developer
Lead Programmer at it0uchpods Design Group
Download High Quality Aircraft from it0uchpods Hangar
User avatar
it0uchpods
 
Posts: 3524
Joined: Tue Oct 06, 2015 12:51 pm
Version: 2018.2.1
OS: Windows 10 x64

Re: New aircraf: Pipistrel Panthera

Postby hardba11 » Mon Oct 22, 2018 11:55 am

Hello it0uchpods

thanks for your feedbacks !


as you can see here : http://wiki.flightgear.org/Pipistrel_Panthera#Development_status_.2F_Roadmap fdm needs lot of work indeed ;)
- a yasim has been borrowed from the cessna caravan in order to fly the aircraft ASAP (it can be removed as soon as the jsbsim version is OK)
- a first version of jsbsim has been made by D-ECHO
You offered your help and it's welcome, thanks a lot :)

The project is very new (1 month), but it respects 2 best practices :
- Minimum viable product
- Release early release often
So anybody can already fly this plane even it is not finished
that's why :
- a first lightweight pfd exists waiting for somebody to implements the real pipistrel cockpit glass instrument
- the exterior 3d is waiting for improvments

regards,

Nico
Last edited by hardba11 on Mon Oct 22, 2018 8:41 pm, edited 1 time in total.
contribs: mirage2000-5, statics models, LFRV - WIP: new aircraft, TFFJ - hobby: world tour in flightgear
hardba11
 
Posts: 155
Joined: Tue May 27, 2014 5:56 pm
Location: Paris - FR
Callsign: F-HRDB
Version: 2018.2.3
OS: windows and debian

Re: New aircraf: Pipistrel Panthera

Postby it0uchpods » Mon Oct 22, 2018 1:53 pm

Thanks for information. :D

Kind Regards,
Josh
it0uchpods/WTF411

FGFS Aircraft Developer
Lead Programmer at it0uchpods Design Group
Download High Quality Aircraft from it0uchpods Hangar
User avatar
it0uchpods
 
Posts: 3524
Joined: Tue Oct 06, 2015 12:51 pm
Version: 2018.2.1
OS: Windows 10 x64

Re: New aircraf: Pipistrel Panthera

Postby hardba11 » Thu Nov 08, 2018 6:40 pm

Hello,

on git, you can download the last version which improve cockpit enlightment :
Image

regards,
Nico
contribs: mirage2000-5, statics models, LFRV - WIP: new aircraft, TFFJ - hobby: world tour in flightgear
hardba11
 
Posts: 155
Joined: Tue May 27, 2014 5:56 pm
Location: Paris - FR
Callsign: F-HRDB
Version: 2018.2.3
OS: windows and debian

Previous

Return to Aircraft

Who is online

Users browsing this forum: No registered users and 15 guests