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Extra EA-300 for FlightGear - GPL v.2

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

Extra EA-300 for FlightGear - GPL v.2

Postby cobe571 » Sun Mar 04, 2018 10:06 pm

Hello I'm really glad to introduce the Extra EA-300

«The Extra 300 is a low-wing single-engine acrobatic aircraft, produced by the German company Extra Aircraft. Designed by Walter Extra (formerly an acrobatic pilot) specifically for acrobatic flight competitions and air shows, it is one of the best airplanes of this type ever created. It is produced in two versions, Extra 300L and Extra 300S, respectively with two seats in tandem or single seat. Both exceed 10G of load factor, both positive and negative. Equipped with a very resistant bicycle landing gear and built in aluminum on a very light and resistant alloy chassis, the Extra 300 has a rolling speed that exceeds 400 ° per second and a VNE (speed not to exceed) of 225 knots (400 km / h). It generally has a 300 horsepower, turbocharged Avco Lycoming engine and a Hartzell triple-pitch propeller with variable pitch and constant revolutions. In the last years a further version of the Extra 300S has been designed, called Extra 330XS, enhanced: in the engine, which from 300 has been increased to 330 hp; in rolling speed, increased by about twenty degrees per second; in the load factors, which go from ± 12 g to ± 15 g; in the smoke plant, which is less affected by climate change and increases the spectacularity of the created figures. This version was commissioned by Paul Bonhomme (Red Bull's acrobatic pilot) and by Walter Extra himself. Together they had already created a modified Extra 300, called Extra 300S HP (High Performances), which then became commercial under the name Extra 300XS. In the 2008 catalog of Extra Aviation, a model for training was presented, and in any case for less experienced acrobatic pilots, called Extra330SR (Skill Range). The engine of the latter model has a power of 350Hp, but is less "brutal" and more manageable than the model it comes from, which, strangely, has made it a success among professional acrobatic pilots.»

Role Aerobatic: monoplane
National origin: Germany
Manufacturer: Extra Flugzeugbau - https://www.extraaircraft.com/
Designer: Walter Extra
First flight: May 1988

Crew: one pilot
Capacity: two

AIRFRAME

Fuselage assembly, 1.7734 steel
Carbon fiber wing assembly with integral tank
Carbon / glass hybrid composite empennage structure
Fiberglass landing gear spring
Bubble canopy
Titanium firewall
Lightweight shells and fairings group
Tailwheel, hard

POWERPLANT AND PROPELLER

Lycoming AEIO-540-L1B5, 300 hp, 6-cylinder
Gomolzig, 6-in-1 exhaust system
Lightweight hose kit, teflon with integrated fire sleeves
Lightweight single oil cooler system
Electric starter
Two fuel pumps (1 engine-driven, 1 electric)
MT-Propeller, MTV 14-B-C /C190-17, 4-blade (2.700 RPM)

COCKPIT

Fixed composite front seat, contour molded
Adjustable composite rear seat, contour molded
Forward rudder pedals with differential toebrakes
Front and rear seat Hooker safety harness with ratchet
2 front and 2 rear bezel-operated air vents
Rear rudder pedals manually adjustable

SYSTEMS

65 Amp alternator
12V battery
Strobe / navigation lights at wing tips
Smoke system with automatic filling system
External battery "trickle" charge socket, incl. charging cable
Electric stall warning system
Pitot static system drain

STANDARD PANEL EQUIPMENT

Airspeed indicator (kts)
Altimeter (ft, inHg/hPa)
Mechanical accelerometer
Magnetic compass
Slip and skid indicator, with holder if req'd

AIRCRAFT DIMENSIONS

wingspan 26,3 ft / 8,0 m
length 22,8 ft / 6,9 m
height 8,6 ft / 2,6 m
wing area 115,2 ft2/ 10,7 m2
FAA / EASA certified load factor +/- 10 g

WEIGHTS

typ. equipped empty weight 1.455 lbs / 660 kg
MTOW normal category (+6/-3g) 2.095 lbs / 950 kg
MTOW two-pilot acro (+8/-8g) 1.918 lbs / 870 kg
MTOW single-pilot acro (+10/-10g) 1.808 lbs / 820 kg

AIRSPEEDS

never exceed speed (Vne) 220 kts
maneuvering speed (Va) (acro) 158 kts
stall speed at 1.808 lbs / 820 kg (Vs) 55 kts
stall speed at 2.095 lbs / 950 kg (Vs) 60 kts

FUEL

total capacity 49,9 gal / 189 ltr
usable fuel 49,4 gal / 187 ltr
usable fuel - acro tanks only 17,7 gal / 67 ltr

-----

That's really enough to produce a 3D model with Blender. Generally I don't have a point where to start modeling a new aircraft. So that's a personal choice. I follow the classical steps I learnd over the years. First of all I create a "Box" that will help me follow the basical lines. Most of the job is always done by using real pictures that helps really much to add real details to the model.. So a good documentation about the subject is really necessary.

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So a year later from where I start I have my 3D model almost done.

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To obtain the first results is truly necessary to stick with the project. To love it like a baby that need cares day by day. The EA-300 is made by many different parts that I separate into layers, so I can operate without difficulty on them. Coordinates are always set to global. Every part of the plane is a separate object with a material, that later will have a texture associated.

Modeling I'm not a big fan of so huge mesh, with very high details, expecially if we're talkin' about modeling for FlightGear. Too really much faces, edges and vertex, most of the time are a plus, if textures are really well made. So I use the amount Is necessary, cause the most important thing, I'm developing an airplane for FlightGear; that I still presume is created by devs to be used by everyone, even whom those people, that can't afford personal computer, with really high specs.

The EA-300 parts

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The 3D model itself can't fly without a good FDM, so I start to create the entire structure. directories, sub-directories and files needed to fly the EA-300...

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Hope you'll like this airplane even if isn't finished yet. Also I hope and ask to you all for your help and suggestions to make it flyable into FlightGear Flight Simulator as soon as possible.

Best regards,

~Patrizio.
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby wlbragg » Sun Mar 04, 2018 10:43 pm

What a talent you have. Nice looking model .When you get farther along I might be able to help you with some of the effects framework.
Kansas(2-27-15)/Ohio/Midwest scenery development.
KEQA (2-27-15), 3AU, KRCP Airport Layout
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby cobe571 » Mon Mar 05, 2018 2:15 am

Hello wlbragg :)

When you get farther along I might be able to help you with some of the effects framework.


I really thank you for your appreciation. I really thank you in advance for your future help. I realized that to start with a new plane on this simulator, I need to start with something simple, and an acrobatic plane gives me a relatively simple configuration because there are no flaps for example.

Now I'm going to show the contents of the files in the various directories and sub-directories I created. As seen in the previous post a root directory was created that counts all the files. I called that directory EA300

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Inside the root directory I have this right now (as seen before)

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Well, every directory counts many files to re-write or modify...

The directory Dialogs

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The directory Engines already there if a JSBsim FDM will be developed too. There's nothing right now

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The directory Models. It counts many sub-directories and 3D files. I will talk about this directory into another post...

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The directory Nasal

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The directory Sounds

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The directory Systems

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Into another post I will show the code inside every EA300*.xml file.

Thank you again for your interest on this project :)

Best regards

~Patrizio.
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby dg-505 » Mon Mar 05, 2018 5:13 am

Really nice, very impressive peace of work. Now that's what can be called a high quality 3D model! :D
It's not just a hobby. I'ts a passion: FLYING !!

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Re: Extra EA-300 for FlightGear - GPL v.2

Postby paju1986 » Mon Mar 05, 2018 9:59 am

this was one of the planes i was missing from flightgear, nice to see someone working on it :)

Regads!
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby D-ECHO » Mon Mar 05, 2018 1:37 pm

Wow, cobe, didn't expect the 3d model to be *that* good, very impressed :D Would you mind putting it up on git so we can work together on it?
Regards
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby dg-505 » Mon Mar 05, 2018 1:46 pm

D-ECHO wrote in Mon Mar 05, 2018 1:37 pm:putting it up on git

Or, even better, directly include it into FGAddon (see FlightGear Wiki for details), so that the whole FlightGear project can benefit from it? ;)
I really would be more than willing to review and upload it to the FGAddon hangar on SourceForge! :D

Thanks and keep up the good work
Jonathan
It's not just a hobby. I'ts a passion: FLYING !!

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Re: Extra EA-300 for FlightGear - GPL v.2

Postby Marty » Mon Mar 05, 2018 2:18 pm

This looks so awesome!! I can't wait to fly :D
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby D-ECHO » Mon Mar 05, 2018 2:29 pm

FGAddon should IMO always be the target for aircraft development projects, but I rather use git to develop something, as you have PRs, issues etc. and only when it's more or less stable upload it to FGAddon.
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby gsagostinho » Wed Mar 07, 2018 12:14 am

This looks absolutely stunning!
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby cobe571 » Sat Mar 10, 2018 6:19 pm

Hello FG community, sorry for delay.

The development on the Extra-300 for FlightGear is going really well. But you will judge. I really appreciate your comments and your suggestions. Tell me always what you think, even most important, if you disagree with something I'm doing. That's really important for the development of this airplane. I learnd that every closed team/project lead to a closed result. An end in itself. I don't want this faith for this airplane. I want this project to grow and fly for everyone and everywhere. NOT only for super users.


@dg-505:
(...) Now that's what can be called (...)


Thank you Jonathan :) The model is still in development with more details to add. Both for the part of the 3D model, both for the part of the textures. I'm still trying to see in my mind a good pattern for the default texture that will have, itself, the symbols of our FlightGear simulator. So the logos, the colors, and the symbols. I have to say that I will not go with a lot of face/vertex to obtain the right result for FlightGear. I always think that's not necessary. The idea to be added to FGAddon is really nice.


@paju1986:
this was one of the planes i was missing from flightgear


me too :)

@Marty:
I can't wait to fly


Thank you: every help is really welcome, even with new suggestions :)

@D-ECHO:
Would you mind putting it up on git so we can work together on it?


Thank your really much for your kindly words :) I want to show what I did on the whole project myself. Directory by directory, file by file. Showing here on the FlightGear Forum all the development concerning this airplane waiting to fly. Doing so helps me a lot and maybe it will also help those who will read this thread in the future. I really appreciate that you want to help me in this project. I am grateful for your inner momentum. Give me time to show what I've done. I want to show every single file and analyze it here on the forum. Help me with this.

@gsagostinho:
This looks (...)


Thank you really much! :)

Regards everyone

~Patrizio.
Last edited by cobe571 on Sun Mar 11, 2018 1:26 am, edited 2 times in total.
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby cobe571 » Sat Mar 10, 2018 10:06 pm

EA300 The root directory, where every directory and file is located.

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Authors.txt as the name said include authors. Just me right now.

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           ### Authors File ###
==========================================
MELIS Patrizio

cobe571-at-<NOSPAM>-hotmail.it

https://sites.google.com/site/cobe571/home
==========================================

           ### Other Authors ###

==========================================





==========================================


COPYNG

Code: Select all
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when it starts in an interactive mode:

    Gnomovision version 69, Copyright (C) year name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.

You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This General Public License does not permit incorporating your program into
proprietary programs.  If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.


Extra-300.txt

Role Aerobatic monoplane
National origin Germany
Manufacturer Extra Flugzeugbau - https://www.extraaircraft.com/
Designer Walter Extra
First flight May 1988

Crew: one pilot
Capacity: two

AIRFRAME

Fuselage assembly, 1.7734 steel
Carbon fiber wing assembly with integral tank
Carbon / glass hybrid composite empennage structure
Fiberglass landing gear spring
Bubble canopy
Titanium firewall
Lightweight shells and fairings group
Tailwheel, hard

POWERPLANT AND PROPELLER

Lycoming AEIO-540-L1B5, 300 hp, 6-cylinder
Gomolzig, 6-in-1 exhaust system
Lightweight hose kit, teflon with integrated fire sleeves
Lightweight single oil cooler system
Electric starter
Two fuel pumps (1 engine-driven, 1 electric)
MT-Propeller, MTV 14-B-C /C190-17, 4-blade (2.700 RPM)

COCKPIT

Fixed composite front seat, contour molded
Adjustable composite rear seat, contour molded
Forward rudder pedals with differential toebrakes
Front and rear seat Hooker safety harness with ratchet
2 front and 2 rear bezel-operated air vents
Rear rudder pedals manually adjustable

SYSTEMS

65 Amp alternator
12V battery
Strobe / navigation lights at wing tips
Smoke system with automatic filling system
External battery "trickle" charge socket, incl. charging cable
Electric stall warning system
Pitot static system drain

STANDARD PANEL EQUIPMENT

Airspeed indicator (kts)
Altimeter (ft, inHg/hPa)
Mechanical accelerometer
Magnetic compass
Slip and skid indicator, with holder if req'd

AIRCRAFT DIMENSIONS

wingspan 26,3 ft / 8,0 m
length 22,8 ft / 6,9 m
height 8,6 ft / 2,6 m
wing area 115,2 ft2/ 10,7 m2
FAA / EASA certified load factor +/- 10 g

WEIGHTS

typ. equipped empty weight 1.455 lbs / 660 kg
MTOW normal category (+6/-3g) 2.095 lbs / 950 kg
MTOW two-pilot acro (+8/-8g) 1.918 lbs / 870 kg
MTOW single-pilot acro (+10/-10g) 1.808 lbs / 820 kg

AIRSPEEDS

never exceed speed (Vne) 220 kts
maneuvering speed (Va) (acro) 158 kts
stall speed at 1.808 lbs / 820 kg (Vs) 55 kts
stall speed at 2.095 lbs / 950 kg (Vs) 60 kts

FUEL

total capacity 49,9 gal / 189 ltr
usable fuel 49,4 gal / 187 ltr
usable fuel - acro tanks only 17,7 gal / 67 ltr


License.txt

Code: Select all
               ### Folder/File : EA300 Licensing ###

The folder 'EA300' and it's subfolders contain all data designed to provide
the -EXTRA Aircraft EA 300- to the free FlightGear Flight Simulator.

=============================================================================

Copyright: © 2017, 2018 Patrizio Melis

Updated 20xx by

=============================================================================
   
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program. 
    If not, see the link -> 'http://www.gnu.org/licenses'
   
=============================================================================

See the COPYING file for the GNU GPL License.

Author: Patrizio Melis
E-Mail: cobe571-at-<NOSPAM>-hotmail.it
Site  : https://sites.google.com/site/cobe571/home

=============================================================================

This licensing includes the 3-D model of the aircraft, texture, images and
script files. They are my own creation, created with free and open source
software namely:

- Blender 2.79a
- MeshLab v1.3.2
- Gimp 2.8.16
- Krita 2.9.7
- OpenVSP 3.4.1 build Gnu/Linux
- Ubuntu Studio (OS) 16.04.4 LTS (Xenial Xerus) 64-bit

=============================================================================


Read-Me.txt

[English]

A little history
================

The Extra Flugzeugbau EA300 is a two-seat aerobatic monoplane capable of Unlimited category competition. It was designed in 1987 by Walter Extra, a German aerobatic pilot, and built by Extra Flugzeugbau. Design of the Extra 300 was based on the Extra 230, an early 1980s monoplane having a wing made of wood. The Extra 300 has a welded steel tube fuselage covered in aluminium and fabric. The mid-set wing has a carbon fiber composite spar and carbon composite skins. A symmetrical airfoil, mounted with a zero angle of incidence, provides equal performance in both upright and inverted flight. The landing gear is fixed taildragger style with composite main legs and fiberglass wheel pants. The powerplant is a fuel-injected Lycoming AEIO-540 which produces 300 horsepower (224 kW). The first two-seat Extra 300 made its maiden flight on 6 May 1988, with German type certification following on 16 May 1990. The single-seat Extra 300S flew on 4 March 1992. The Extra 300 is stressed for ±10 G with one person on board and ±8 G with two. Some Extra 300s are certificated in the Experimental Category in the U.S., while others are certificated in the Aerobatic category.

Specifications (Reference - https://en.wikipedia.org/wiki/Extra_EA-300)

EXTRA Aircraft - https://www.extraaircraft.com/
============

Manufacturer : Extra Flugzeugbau
Designer : Walter Extra
Type : Aerobatic monoplane
Year : May 1988
Powerplant : Lycoming AEIO-540-L1B5, 300 hp, 6-cylinder
Wingspan : 26,3 ft / 8,0 m
Length : 22,8 ft / 6,9 m
Height : 8,6 ft / 2,6 m
Empty weight : 1.455 lbs / 660 kg
Crew : One pilot
Capacity : Two

For more details see -> 'Extra-300.txt' file

Thanks to:
======

===============
MELIS Patrizio
cobe571-at-<NOSPAM>-hotmail.it
https://sites.google.com/site/cobe571/home

June, 21, 2017 - January, 09, 2018


Version

Version: 0.1 Alpha


EA300-set.xml

EA300-set.xml is a pretty simple file. It shows how every xlm file need to start. The version *1.0 and the encoding ISO-8859-1. The file continue with a property list that includes a sub directory called System where is located the file EA300-base.xml that will see into another post. The simulation include a description, the author, the aircraft version and the status. It shows the flight-model yasim. The official FlightGear FDM. Then where's located the aero. Follow tags and rating. I set all parameters to zero because I can't judge my whole job. That section need your hints and help.


Code: Select all
<?xml version="1.0" encoding="ISO-8859-1"?>

<PropertyList include="Systems/EA300-base.xml">

  <sim>
   
    <description>EXTRA Aircraft EA 300 (YASim)</description>
    <author>Patrizio MELIS (3D/FDM)</author>
    <aircraft-version>0.1</aircraft-version>
    <status>Alpha</status>
   
    <flight-model>yasim</flight-model>
    <aero>Systems/EA300-yasim</aero>

    <tags>
      <tag>aerobatic</tag>
      <tag>monoplane</tag>
      <tag>fixed-gear</tag>
      <tag>single-engine</tag>
      <tag>piston</tag>
    </tags>
   
    <rating>
      <FDM type="int">     0 </FDM>
      <systems type="int"> 0 </systems>
      <cockpit type="int"> 0 </cockpit>
      <model type="int">   0 </model>
    </rating>

  </sim>

</PropertyList>


A Temporary EA300-splash.png 512x512 px (Pixel)

A temporary thumbnail.jpg 171x138 px (Pixel)
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby cobe571 » Sat Mar 10, 2018 11:41 pm

The directory Dialogs

Image

EA300-menu.xml

Code: Select all
<?xml version="1.0" encoding="ISO-8859-1"?>

<PropertyList>

  <default>
    <menu n="10">
      <label>EA300</label>
      <enabled type="bool">true</enabled>
      <item>
        <label>Select Livery</label>
        <binding>
          <command>nasal</command>
          <script>aircraft.livery.dialog.toggle()</script>
        </binding>
      </item>
    </menu>
  </default>

</PropertyList>


immat.xml

Code: Select all
<?xml version="1.0" encoding="ISO-8859-1"?>

<PropertyList>

  <name>Immatriculation</name>
  <layout>vbox</layout>
  <modal>false</modal>
  <draggable>true</draggable>

  <group>
    <layout>hbox</layout>
    <text>
      <label>Immatriculation</label>
    </text>
  </group>

  <group>
    <layout>hbox</layout>
    <input>
      <property>/sim/model/immat</property>
      <type>STRING</type>
      <width>100</width>
    </input>
  </group>

  <group>
    <layout>hbox</layout>
    <empty><stretch>true</stretch></empty>
    <button>
      <legend>OK</legend>
      <equal>true</equal>
      <default>true</default>
      <key>Esc</key>
      <binding><command>dialog-apply</command></binding>
      <binding><command>dialog-close</command></binding>
    </button>
    <empty><stretch>true</stretch></empty>
  </group>

</PropertyList>
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Version: 2018.2.2
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby cobe571 » Sat Mar 10, 2018 11:48 pm

The Engines directory (actually nothing inside).
There can be written an engine file for an eventually JSBSim open source flight dynamics model (FDM). A future JSBsim version will need for sure some volunteers. So please help this project with your knowledge if like this aircraft.
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cobe571
 
Posts: 59
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Version: 2018.2.2
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Re: Extra EA-300 for FlightGear - GPL v.2

Postby cobe571 » Sat Mar 10, 2018 11:53 pm

The Nasal directory
Actually there are two files:

Image

doors.nas

Code: Select all
# =====
# Doors
# =====
crew       = aircraft.door.new("/sim/model/door-positions/crew", 2, 0 );
passenger  = aircraft.door.new("/sim/model/door-positions/passenger", 2, 0 );
cargo  = aircraft.door.new("/sim/model/door-positions/cargo", 2, 0 )


light.nas

Code: Select all
var sbc1 = aircraft.light.new( "/sim/model/lights/sbc1", [0.5, 0.3] );
sbc1.interval = 0.1;
sbc1.switch( 1 );

var sbc2 = aircraft.light.new( "/sim/model/lights/sbc2", [0.2, 0.3], "/sim/model/lights/sbc1/state" );
sbc2.interval = 0;
sbc2.switch( 1 );

setlistener( "/sim/model/lights/sbc2/state", func(n) {
  var bsbc1 = sbc1.stateN.getValue();
  var bsbc2 = n.getBoolValue();
  var b = 0;
  if( bsbc1 and bsbc2 and getprop( "/controls/lighting/beacon") ) {
    b = 1;
  } else {
    b = 0;
  }
  setprop( "/sim/model/lights/beacon/enabled", b );

  if( bsbc1 and !bsbc2 and getprop( "/controls/lighting/strobe" ) ) {
    b = 1;
  } else {
    b = 0;
  }
  setprop( "/sim/model/lights/strobe/enabled", b );
});

var beacon = aircraft.light.new( "/sim/model/lights/beacon", [0.05, 0.05] );
beacon.interval = 0;

var strobe = aircraft.light.new( "/sim/model/lights/strobe", [0.05, 0.05, 0.05, 1] );
strobe.interval = 0;


liveries.nas

Code: Select all
aircraft.livery.init("Aircraft/EA300/Models/Liveries");
Last edited by cobe571 on Sun Mar 11, 2018 1:22 am, edited 1 time in total.
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Posts: 59
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