Board index FlightGear Development Aircraft

DHC-6 Twin Otter development

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

Re: DHC-6 Twin Otter development

Postby dg-505 » Sat Jul 09, 2016 11:23 pm

Slowly progressing ;)
Image
A mile of road will take you a mile, but a mile of runway will take you everywhere.

DHC-6 Twin Otter development
User avatar
dg-505
 
Posts: 653
Joined: Mon Jun 02, 2014 2:36 pm
Location: Bonn, Germany
Callsign: dg-505
Version: next
OS: Ubuntu 18.04.4 LTS

Re: DHC-6 Twin Otter development

Postby dg-505 » Fri Jul 15, 2016 9:00 pm

Hey Bo :)

are you still following this project?
I just finished the animation of the three (!) circuit breaker panels. If yo are still willing to upgrade the electrical system, you can now start with this :mrgreen:

Maybe it may help you to read the wiki entry I wrote about the electrical system together with the two information sources I've linked to... :wink:

If you're not following this project any longer, probably I can give it a feeble attempt... :roll:

Cheers
Jonathan
A mile of road will take you a mile, but a mile of runway will take you everywhere.

DHC-6 Twin Otter development
User avatar
dg-505
 
Posts: 653
Joined: Mon Jun 02, 2014 2:36 pm
Location: Bonn, Germany
Callsign: dg-505
Version: next
OS: Ubuntu 18.04.4 LTS

Re: DHC-6 Twin Otter development

Postby Patten » Sat Jul 16, 2016 8:05 am

Hi Jonathan,

In the dhc6/Models/Flightdeck/Circuit-breaker/overhead-breaker-panel.ac, the path of the texture is in your HD. :D

Lines 1489-38539-38228-43412

Code: Select all
texture "E:/FlightGear Aircraft/dhc6/Models/Flightdeck/ohpanel.png"


:D
Patten
 
Posts: 186
Joined: Sat May 31, 2014 8:43 am
Location: Lyon France
Callsign: Patten
Version: 2018.2.0
OS: LinuxMint18.3 Sylvia

Re: DHC-6 Twin Otter development

Postby dg-505 » Sat Jul 16, 2016 8:40 am

Thanks for reporting! :)

Obviously this problem makes no difference on my PC, so it's really good someone else tests it.

It's fixed in commit r2008.
A mile of road will take you a mile, but a mile of runway will take you everywhere.

DHC-6 Twin Otter development
User avatar
dg-505
 
Posts: 653
Joined: Mon Jun 02, 2014 2:36 pm
Location: Bonn, Germany
Callsign: dg-505
Version: next
OS: Ubuntu 18.04.4 LTS

Re: DHC-6 Twin Otter development

Postby mifi » Sat Jul 16, 2016 9:35 am

Indeed it is. I just checked.
Thanks Jonathan.
m
mifi
 
Posts: 316
Joined: Mon Jul 23, 2007 3:24 pm
Location: NL
Version: git next
OS: Ubuntu 16.04.x Gnome

Re: DHC-6 Twin Otter development

Postby scarymovie » Fri Jul 29, 2016 5:32 pm

Hi everyone,

My question is how do we steer the plane on water?

Thank you.
scarymovie
 
Posts: 79
Joined: Wed Nov 21, 2007 2:34 pm

Re: DHC-6 Twin Otter development

Postby Patten » Fri Jul 29, 2016 6:16 pm

Reverse R or L?.

:D
Last edited by Johan G on Tue Aug 09, 2016 5:50 pm, edited 1 time in total.
Reason: No need to quote the entire preceding post.
Patten
 
Posts: 186
Joined: Sat May 31, 2014 8:43 am
Location: Lyon France
Callsign: Patten
Version: 2018.2.0
OS: LinuxMint18.3 Sylvia

Re: DHC-6 Twin Otter development

Postby dg-505 » Sat Jul 30, 2016 9:33 am

Patten wrote in Fri Jul 29, 2016 6:16 pm:Reverse R or L?

Correct. In the current state it's only possible to steer it with thrust reverse and/or differential power at low speed. At higher speed you can steer it with rudder.

@scarymovie do you know how to activate thrust reverse?
A mile of road will take you a mile, but a mile of runway will take you everywhere.

DHC-6 Twin Otter development
User avatar
dg-505
 
Posts: 653
Joined: Mon Jun 02, 2014 2:36 pm
Location: Bonn, Germany
Callsign: dg-505
Version: next
OS: Ubuntu 18.04.4 LTS

Re: DHC-6 Twin Otter development

Postby scarymovie » Sun Jul 31, 2016 5:10 am

Thanks guys for the info.

Yes, I do. Which means that I will need to use the mouse to throttle L or R.
Last edited by Johan G on Tue Aug 09, 2016 5:51 pm, edited 1 time in total.
Reason: No need to quote the entire preceding post.
scarymovie
 
Posts: 79
Joined: Wed Nov 21, 2007 2:34 pm

Re: DHC-6 Twin Otter development

Postby dg-505 » Sun Jul 31, 2016 6:02 am

scarymovie wrote in Sun Jul 31, 2016 5:10 am:Which means that I will need to use the mouse to throttle L or R

Yes, that would be one option but I think its quite inconvenient to always control the throttle levers with the mouse.
So let me show you two other ways how to control the throttles individually:

1. You can select the left engine with "!", and the right engine with "@". Then you can set the desired power only on the selected engine. To select both engines again, press "~".

2. Another cool option would be to map the controls of each engine to two individual keys on the keyboard.

Cheers
Jonathan
A mile of road will take you a mile, but a mile of runway will take you everywhere.

DHC-6 Twin Otter development
User avatar
dg-505
 
Posts: 653
Joined: Mon Jun 02, 2014 2:36 pm
Location: Bonn, Germany
Callsign: dg-505
Version: next
OS: Ubuntu 18.04.4 LTS

Re: DHC-6 Twin Otter development

Postby Fritz » Sun Jul 31, 2016 11:31 am

2. Another cool option would be to map the controls of each engine to two individual keys on the keyboard.

I did this for the DC-3, but there is nothing DC-3-specific in the code.
Code: Select all
<!-- differential throttles -->
  <key n="97">
    <name>a</name>
    <desc>decrease left throttle, increase right throttle</desc>
    <repeatable type="bool">true</repeatable>
    <binding>
      <command>nasal</command>
     <script><![CDATA[
     var l_thr = getprop("controls/engines/engine/throttle");
     var r_thr = getprop("controls/engines/engine[1]/throttle");
      if( (l_thr > 0.1) and (r_thr < 0.9))  {    
        setprop ("controls/engines/engine/throttle", l_thr - 0.01);
        setprop ("controls/engines/engine[1]/throttle", r_thr + 0.01);
     }
      ]]></script>    
    </binding>
  </key>
  <key n="115">
    <name>s</name>
    <desc>decrease right throttle, increase left throttle</desc>
    <repeatable type="bool">true</repeatable>
    <binding>
      <command>nasal</command>
     <script><![CDATA[
      var l_thr = getprop("controls/engines/engine/throttle");
      var r_thr = getprop("controls/engines/engine[1]/throttle");
      if(( r_thr > 0.1) and (l_thr < 0.9))  {    
        setprop ("controls/engines/engine/throttle", l_thr + 0.01);
        setprop ("controls/engines/engine[1]/throttle", r_thr - 0.01);
      }
      ]]></script>    
    </binding>
  </key> 

I used A and S (which means that I had to change the engine starter to Shift-S, but I usually use the switches in the 3D cockpit for stating). Sadly, it isn't really usable for the DC-3 because the engines react much too slowly, so I rarely use it. And I'm still not sure if swapping A and S would be better: At the moment the keys behave like the brake keys, i.e. if you press A, the plane will go to the left by decreasing the left throttle and increasing the right one.
Fritz
 
Posts: 225
Joined: Tue Apr 26, 2016 10:04 pm
Location: Bavaria, Germany, near ETSL
Version: 2016.3.1
OS: Windows 7 Prof.

Re: DHC-6 Twin Otter development

Postby dg-505 » Thu Oct 06, 2016 7:32 pm

Fritz wrote in Sun Jul 31, 2016 11:31 am:I used A and S
Well, that won't work for the Twin Otter, because the keys A and S are already mapped to the simulation time and the Walker.
A mile of road will take you a mile, but a mile of runway will take you everywhere.

DHC-6 Twin Otter development
User avatar
dg-505
 
Posts: 653
Joined: Mon Jun 02, 2014 2:36 pm
Location: Bonn, Germany
Callsign: dg-505
Version: next
OS: Ubuntu 18.04.4 LTS

Re: DHC-6 Twin Otter development

Postby asr » Tue Dec 06, 2016 7:13 pm

I've just upgraded my copy to the latest from SVN. This aircraft keeps getting more and more amazing. Great job!

Had a problem with the External Power toggle. It didn't work. Had to edit the condition in the menu file:

Code: Select all
dhc6] svn diff
Index: dhc6-menu.xml
===================================================================
--- dhc6-menu.xml   (revision 2333)
+++ dhc6-menu.xml   (working copy)
@@ -81,7 +81,7 @@
                                 </and>
                             </or>
                             <less-than>
-                                <property>velocities/airspeed-kt</property>
+                                <property>velocities/groundspeed-kt</property>
                                 <value>1.0</value>
                             </less-than>
                         </and>


Otherwise I can't toggle in a windy airport :D
asr
 
Posts: 75
Joined: Mon Sep 15, 2014 7:55 pm

Re: DHC-6 Twin Otter development

Postby dg-505 » Tue Dec 06, 2016 7:46 pm

Thanks for the info! I'll apply the changes immediately.

asr wrote in Tue Dec 06, 2016 7:13 pm:This aircraft keeps getting more and more amazing. Great job!


Thank you :D Keep an eye out for some future updates, I've got some interesting plans
A mile of road will take you a mile, but a mile of runway will take you everywhere.

DHC-6 Twin Otter development
User avatar
dg-505
 
Posts: 653
Joined: Mon Jun 02, 2014 2:36 pm
Location: Bonn, Germany
Callsign: dg-505
Version: next
OS: Ubuntu 18.04.4 LTS

Re: DHC-6 Twin Otter development

Postby Thorsten » Thu Mar 09, 2017 4:36 pm

I had a spin in the plane today, with the idea of writing a review, but unfortunately I've hit a major snag.

There's a couple of minor issues:

* the boost pumps are a bit hard to locate, the checklist function doesn't mark them
* the checklists instruct to switch power from external to battery while the generators are off - this causes a momentary loss of power in the plane
* the checklist instructs to move the condition lever gradually, but it seems to know only two positions, it snaps to 1 immediately when I press the key...)

The major issue occurred at ~ 9000 ft climbing. Suddenly airspeed increased and I got an on-screen warning. I throttled back and pulled up to bleed off excess speed quickly, and I saw the altimeter increase and vspeed go large - yet the airspeed kept increasing in violation of energy conservation - right to a stall. Below 8000 ft all reverted to normal - so I tried again, same phenomenon, airspeed climbing with the plane. This time I pushed the nose down and got a decrease of airspeed as a reward.

Since the plane actually stalled, I'm sort of assuming that it's the indicator which is off (and the same wrong property also triggers the warning), but I haven't taken the time to check this in detail.

But it is a major issue for mountain flying.
Thorsten
 
Posts: 11465
Joined: Mon Nov 02, 2009 8:33 am

PreviousNext

Return to Aircraft

Who is online

Users browsing this forum: sidi762 and 1 guest