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Author SHA1 Message Date
Henning Stahlke
c63ded1c44 YASIM add initialization 
use Math::clamp in ControlMap
 2017-12-15 15:20:28 +01:00
Henning Stahlke
b2000e1cca YASIM add a local var 2017-12-15 15:20:28 +01:00
Henning Stahlke
5aead123fc YASIM refactoring of ControlMap 2017-12-15 15:20:28 +01:00
Henning Stahlke
09c60ee40e YASIM add variable initialization 2017-12-15 15:20:28 +01:00
Henning Stahlke
3809137f7d YASIM add method multiplyLiftRatio to class Wing 2017-12-15 15:20:28 +01:00
Henning Stahlke
6feca92060 YASIM add struct StallParams to Wing 2017-12-15 15:20:27 +01:00
Henning Stahlke
b288ca3d9d YASIM: add struct Chord to Wing.hpp ; add static method calculateMAC to Wing 2017-12-15 15:20:27 +01:00
Henning Stahlke
6b473fde68 YASIM: move updating of model from Airplane to Wing 2017-12-15 15:20:27 +01:00
Henning Stahlke
fb6f965db7 YASIM: method name clarification (and indention) 2017-12-15 15:20:27 +01:00
Henning Stahlke
0e6552cddf YASIM: move property export code into classes (Wing) 2017-12-15 15:20:27 +01:00
Henning Stahlke
43af435085 YASIM: rename method getMAC to getMACLength 2017-12-15 15:20:27 +01:00
Henning Stahlke
c3bfeb4ba0 YASIM only reformat for better readability 2017-12-15 15:20:27 +01:00
Henning Stahlke
030403db5f YASIM member initialization in class Vector 2017-12-15 15:20:26 +01:00
Henning Stahlke
1194b09525 YASIM rename methods in class Surface 2017-12-15 15:20:26 +01:00
Henning Stahlke
1f721fb6d8 YASIM add new version tag for 2018.1 2017-12-15 15:20:26 +01:00
Henning Stahlke
77a9cca6d5 YASIM refactoring Wing class (flaps) 2017-12-15 15:20:26 +01:00
Henning Stahlke
95ee37c9b9 YASIM refactoring of Wing class 2017-12-15 15:20:26 +01:00
Henning Stahlke
3ac90ee866 YASIM: minor corrections and safeguards. 2017-12-15 15:20:26 +01:00
Henning Stahlke
ea8bfba98a YASim: add method to Wing and clarify member name. 2017-12-15 15:20:25 +01:00
James Turner
bf2c363e50 Fix carrier starts 
Rewrite the position-init code for carrier starts, to precisely wait
on the carrier model being loaded, before proceeding with FDM init.
This allows the FDM to see the correct carrier model in the ground
cache, and hence avoids starting in the water.

To implement this, the CheckSceneryVisitor is used to force the carrier
model to be loaded while the splash-screen is visible.
 2017-09-08 22:31:22 +01:00
James Turner
91d3229514 Catch large ground-cache requests. 
In some testing, JSBsim sometimes passed extremely large values into
this function (larger than the radius of the earth). This causes
every tile on the planet to be scheduled if using the standard STG
terrain, effectively blocking startup.

This code allows us a chance to catch this case via logging, but does
not fix the underlying issues.
 2017-09-04 22:48:38 +01:00
Bertrand Coconnier
b76db7737d Added the generation of wake induced force and moment for JSBSim models. 
The wake induced force and moment are computed as an external reaction to the JSBSim model. For these force and moment to be accounted for by JSBSim, the following external reaction needs to be added to FDM XML definition:
<external reaction>
  <force name="ai-wake">
    ...
  </force>
  <moment name="ai-wake">
    ...
  </moment>
</external reaction>

This is similar to how the hook and wire feature is modeled in JSBSim.
 2017-06-10 23:27:52 +02:00
Bertrand Coconnier
96df6689e6 Added the computation of the wake of all AI aircrafts. 
Wake computations are now performed for all AI aircrafts within a range lower or equal to the value indicated by the property /fdm/ai-wake/max-radius-nm.

These computations are triggered by the property /fdm/ai-wake/enabled (it is disabled by default).

The result of the wake computations is not yet used by the FDMs so do not expect the user aircraft to react to the AI wake.
 2017-06-10 21:13:20 +02:00
Bertrand Coconnier
b5fe38c1eb Compile AI wake numerical core in FG main executable. 
AI wake code is still dead code except that it is now compiled with FG.

Input data for wake computations are extracted from the performance database. The data must be specified as follows (values are for illustration only) :
<geometry>
  <wing>
    <span-ft> 100. </span-ft>
    <chord-ft> 12. <chord-ft>
  </wing>
  <weight-lbs> 90000. </weight-lbs>
</geometry>
 2017-06-10 20:19:43 +02:00
Bertrand Coconnier
cdf299391d Added missing <cmath> header for Mac to compile. 2017-06-10 19:22:15 +02:00
Bertrand Coconnier
c1313f2ecb Added the core of the AI wake computations with its tests. 
At the moment, this is dead code: only the tests are compiled. FG is still compiled without this code.

A new directory is created that contains all the numerical computations made to estimate the wake induced by AI aircrafts. This is based on the venerable Vortex Lattice Method (VLM) which was all the rage in the 60's Computational Fluid Dynamics (CFD).

Even though quite old, the method is relevant to compute aircrafts wake in real time since 3D Navier-Stokes (NS3D) is out of reach for real time computations even with modern multicore personal computers and their GPUs.
 2017-06-10 18:27:19 +02:00
Bertrand Coconnier
1a0e5a20ae Fixed LaRCSim matrix computation routines. 
There was a couple of typos in the routine. This code will be used by the AI wake feature.
Also added a test for the matrix code to make sure they will be no regression.
 2017-06-05 17:18:52 +02:00
Bertrand Coconnier
7d80a48d94 Sync. w/ JSBSim 
External moments can now be specified in addition to external forces. This feature is needed for the AI wakes.
Headers clean up to reduce the amount of recompilation when modifying an header file.
 2017-06-05 13:09:00 +02:00
Bertrand Coconnier
24a148880c Fixes to the trim on ground feature. 
* Skip the gears when located over water. They will be skipped by the ground reactions anyway making the trim irrelevant.
* Ignore the ground bumpiness during the trim. The trim algorithm seems not to
be robust enough to handle that. This does not make much difference to the
converged solution anyway since the bumpiness is generally low.
* Fixed the WOW status for contacts over water (was 'false' is now 'true').
* All the gear/contact data are now properly reset when WOW==false. The reset
code is now common to all the case where WOW is false.
 2017-05-28 20:14:33 +02:00
Bertrand Coconnier
76ef08679d Cleaned up the JSBSim interface. 2017-05-28 20:12:30 +02:00
Henning Stahlke
43e19c1123 YASim: revert a change in Model.cpp that caused segfaults on some systems. 2017-05-10 16:27:46 +02:00
Henning Stahlke
222361bf66 YASim bufix segfault with helicopters. 2017-05-05 13:47:47 +02:00
Henning Stahlke
35f6811ce3 YASim: trivial code clarification in Wing.cpp 2017-05-04 15:33:13 +02:00
Henning Stahlke
caf2100b5e YASim: code dedup in class Wing. 2017-05-04 15:18:48 +02:00
Henning Stahlke
6817292e73 YASim: changed constructor for Wing. Creating a Wing object without basic geometry data is pointless and this data cannot change during runtime. 2017-05-04 14:31:43 +02:00
Henning Stahlke
614f05bb39 YASim: split Wing::compile into smaller functions (2). 2017-05-04 14:12:30 +02:00
Henning Stahlke
4584c83d8b YASim: split Wing::compile into smaller functions (1). 2017-05-04 14:02:11 +02:00
Henning Stahlke
eb6bb087f6 YASim: include yasim-common.hpp in Wing.cpp and remove constant. 
Trivial cleanup and variable name clarification.
 2017-05-04 13:52:21 +02:00
Henning Stahlke
b0a831e667 YASim: initialize floats with 'f' suffix to avoid problems with windows build 2017-05-03 22:17:08 +02:00
James Turner
2747a33e6b Merge /u/jsb1685/flightgear/ branch yasim into next 
https://sourceforge.net/p/flightgear/flightgear/merge-requests/89/
 2017-05-02 15:09:13 +00:00
Henning Stahlke
37c43ab6dc YASim: add initalizer to Wing.hpp, cleanup constructor. 2017-04-29 12:54:56 +02:00
Henning Stahlke
b4743b3830 YASim: add initalizer to Model.hpp, cleanup constructor. 2017-04-29 12:54:56 +02:00
Henning Stahlke
f9334d8c39 YASim Surface move initialization 2017-04-29 12:54:56 +02:00
Henning Stahlke
efde524685 YASIM move constants to a common header file. 2017-04-29 12:54:55 +02:00
Erik Hofman
072bad4f50 sync. with JSBSim and expose Oil_Press_Relief_Valve, Oil_Press_RPM_Max, Design_Oil_Temp, Oil_Viscosity_Index 2017-04-27 15:41:23 +02:00
Henning Stahlke
0a0402f667 YASim Airplane refactoring (code dedup). 2017-04-25 09:19:25 +02:00
Henning Stahlke
e604f2f662 YASim BodyEnvironment rename methods and split setupState into two methods. 2017-04-25 09:19:25 +02:00
Henning Stahlke
add6c6b8a8 YASim: Airplane solver uses standard atmosphere so we can replaced atmosphere members with floats for altitude and pass those to setup atmo where needed directly from altitude. 2017-04-25 09:19:25 +02:00
Henning Stahlke
8064135665 YASim: Moved Airplane::setupState to BodyEnvironment 2017-04-25 09:18:26 +02:00
Henning Stahlke
ed6dee3f55 YASim Airplane: add initalizers. 2017-04-24 18:31:03 +02:00
Henning Stahlke
8bd8d5f163 YASim Model move one-liner to header. 2017-04-24 00:08:36 +02:00
Henning Stahlke
3457c3c61f YASim: convert Atmosphere to a non-static class so we can pass around air parameters in one object instead of several variables. 2017-04-22 16:14:52 +02:00
Henning Stahlke
5e99f92a0f YASim: conver Airplane::setupState from static to const 2017-04-22 15:06:02 +02:00
Henning Stahlke
2229b0a494 YASim: mark methods of Version 'const' 2017-04-22 14:59:03 +02:00
Henning Stahlke
fcfc82b471 YASim: move one-liners and add 'const' 2017-04-21 22:17:27 +02:00
Henning Stahlke
ef9fa25b94 YASim: update default for desired cg range. 2017-04-18 22:27:35 +02:00
Henning Stahlke
1302c167dd YASim: rename some exported props. 2017-04-18 22:11:34 +02:00
Henning Stahlke
73de375249 YASim declared get methods as const. (correction to previous commit) 2017-04-18 19:12:23 +02:00
Henning Stahlke
3f0ef99c71 YASim: add MAC (mean aerodynamic chord) and c.g. calculations. 2017-04-17 22:52:26 +02:00
Henning Stahlke
574f2f907f YASim: add setAirFromStandardAtmosphere() to Class Model. 2017-04-17 20:10:46 +02:00
Henning Stahlke
7f5a91ea47 YASim: refactoring loadControls() 2017-04-17 20:09:44 +02:00
Henning Stahlke
dbfe9a7b41 YASim: clean up export of aero force and ground effect force to prop tree. 2017-04-17 19:54:26 +02:00
Gary Preston
8958b4d130 Cleanup unused variable warning. 
Remove, comment out or relocate variables as appropriate to silence
unused variable warning.
 2017-04-06 18:26:18 +09:00
Gary Preston
d2ca422c8b Adjust if/else indentation to fix -Wmisleading-indentation 2017-04-06 18:26:01 +09:00
Henning Stahlke
50110b0cd6 YASIM: minor change to allow RigidBody addMass and setMass to trigger aggregation correctly. (not a problem up to now, just to be safe in future) 2017-03-21 22:47:07 +01:00
Henning Stahlke
f7359d9699 YASim: add bug warning messages. 2017-03-21 22:46:33 +01:00
Henning Stahlke
53103ac15e YASim: update CLI usage message. 2017-03-21 22:43:01 +01:00
Erik Hofman
2393fd647d Merge /u/jsb1685/flightgear/ branch yasim into next 
https://sourceforge.net/p/flightgear/flightgear/merge-requests/78/
 2017-03-19 07:49:26 +00:00
Henning Stahlke
dc63307965 YASim: fix segmentation fault in yasim CLI tool 2017-03-18 23:17:19 +01:00
Henning Stahlke
0f472efe9b YASim parser: add support for metric and imperial attibutes, e.g. mass-lbs, mass-kg 2017-03-18 21:28:26 +01:00
Henning Stahlke
cecdfd0832 YASim FGFDM.hpp correction of pointer declarations. 2017-03-18 21:19:24 +01:00
Henning Stahlke
c61730db92 YASim Wing method name clarification (SMC is not MAC). 2017-03-16 09:43:41 +01:00
Henning Stahlke
bb9a8a1850 YASim backward compatibility fix for ground effect calculation (added if isVersionOrNewer). 2017-03-16 09:39:58 +01:00
Henning Stahlke
1c932b3d79 YASim Model.cpp to avoid performance problems with getNode() add variables for properties that are written at FDM rate. 
getNode() is slow, setValue() is ok
 2017-03-16 09:36:15 +01:00
Bertrand Coconnier
40be2687f7 Restored the legacy behavior: the XML extension is mandatory and when it is not explicitely specified it is automatically added. 2017-03-14 21:59:14 +01:00
Henning Stahlke
dbf21b1ca8 YASim calculate max CG range (on x-axis) from gear positions, to implement checks later (a better guesstimate will follow). 2017-03-11 22:44:45 +01:00
Henning Stahlke
e78a763eef YASim Airplane: move one-liners to header and remove unused code. 2017-03-11 21:29:05 +01:00
Henning Stahlke
60f5c97272 YASim Gear: move one-liners to header 2017-03-11 21:06:16 +01:00
Bertrand Coconnier
0d342f526e Exports the parameters of JSBSim ground reactions friction resolver to the property tree for debugging. 2017-03-11 14:00:20 +01:00
Bertrand Coconnier
579f215005 Sync w/ JSBSim: 
* Propeller required power now accounts for the engine tilt
* Fixed a division by zero in FGLGear::GetSteerNorm for non steerable gears
* Fixed a bug reported by Ron H. and Rebecca N. Palmer on the FG mailing list: the 'length' parameter passed to gethostbyaddr in FGFdmSocket was erroneous.
 2017-03-11 13:24:51 +01:00
Henning Stahlke
06ba4fe351 YASim wrap bugfix with version check to maintain compatibility with old aircraft config. 2017-03-07 20:47:43 +01:00
Henning Stahlke
1e92c33a9e YASim export config version used by aircraft to property tree. 
Gives /fdm/yasim/config-version as integer (see enum in Version.hpp to decode).
 2017-03-07 20:45:46 +01:00
Henning Stahlke
80462d23c5 YASim Wing: remove unnecessary local variable "root" (use _base); 
calculate _tip in directly in one command
  clarify signature of Wing::interp()
 2017-03-07 18:03:25 +01:00
Henning Stahlke
583ea27dd6 YASim Version: add tag for version 2017.2 2017-03-07 17:50:05 +01:00
Henning Stahlke
a56f85ac95 YASim removed unused include from Rotor.cpp 2017-03-07 17:50:05 +01:00
Henning Stahlke
6efa1ab821 YASim moved one liners 2017-03-07 17:50:05 +01:00
Henning Stahlke
ce4df326d7 YASim Airplane.cpp additional comments 2017-03-07 17:50:05 +01:00
Henning Stahlke
05f9fcfd10 comments 2017-03-07 17:50:04 +01:00
Henning Stahlke
dc66959b83 YASim comments 2017-03-07 17:50:04 +01:00
Henning Stahlke
1198f5a3ec YASim CLI tool: add print out of max lift and min drag 
add drag(speed) print function
 2017-03-07 17:50:04 +01:00
Henning Stahlke
cb7d2a1bc5 YASim Wing: add _aspectRatio and _meanChord. 
(an some indent)
 2017-03-07 17:50:04 +01:00
Henning Stahlke
a87442c6f3 YASim fix performance problem due to export to prop.tree. 2017-03-07 17:50:04 +01:00
Henning Stahlke
76a0ea96cc YASim clarification. Add const to method parameters in Math.hpp 2017-03-07 17:50:04 +01:00
Henning Stahlke
4cbe540bec YASim: convert local variables alpha and stallAlpha to members of Surface. 2017-03-07 17:50:03 +01:00
Henning Stahlke
5f78545961 only white spaces 2017-03-07 17:50:03 +01:00
Henning Stahlke
d4688d206a YASim: export surface data to property tree. 2017-03-07 17:50:03 +01:00
Henning Stahlke
d322ded552 YASim bugfix: ground effect did not calculate wingspan correctly; 
Variable name clarification;
Add Wing::getWingArea, separate Wing::getWingSpan and Wing::getBase.
 2017-03-07 17:50:03 +01:00
Henning Stahlke
559dcf4e32 YASim optimization: pre-calculate data for masses that do not change in flight to save CPU (RigidBody::recalc() runs at FDM rate). 
export mass data to property tree.
 2017-03-07 17:50:03 +01:00
Henning Stahlke
4e1be43f15 YASim: export wing data to property tree. 2017-03-07 17:50:03 +01:00
Henning Stahlke
021a9db9be YASim add surface id and export surface positions to prop tree after model compile. 2017-03-07 17:50:02 +01:00
Henning Stahlke
dd420c6ff4 YASim bugfix, correct an obvious copy-and-paste error 2017-03-07 17:50:02 +01:00
Henning Stahlke
41b18155a8 YASim: export FDM state (v, a, rot) to property tree. 2017-03-07 17:50:02 +01:00
Henning Stahlke
70dd3de3bb YASim: FGFDM convert local variable _yasimN into a class member 2017-03-07 17:50:02 +01:00
Henning Stahlke
2cac4e4671 YASim: Move variables and methods for input properties from FGFDM to ControlMap. 2017-03-07 17:50:01 +01:00
Henning Stahlke
f14cc3be33 Extend yasim-test.cpp; add print mass distribution, add plot with different configs 2017-03-07 17:47:51 +01:00
Henning Stahlke
6f1f850c11 YASim method name clarification Airplane::setWeight 2017-03-07 17:47:50 +01:00
Henning Stahlke
97a0511ce0 YASim method name clarification in class Surface 2017-03-07 17:47:50 +01:00
Henning Stahlke
91fd075796 YASim method name clarification Wind::setSlat 2017-03-07 17:47:50 +01:00
Henning Stahlke
91806861c6 YASim method name clarification Wind::setFlap1 2017-03-07 17:47:50 +01:00
Henning Stahlke
e69f6ba9ab YASim method name clarification Wind::setFlap0 2017-03-07 17:47:50 +01:00
Henning Stahlke
ce753c0382 YASim method name clarification Wing::setSpoiler 2017-03-07 17:47:50 +01:00
Henning Stahlke
b447bbdc5e Optimize YASim/RigidBody.cpp utilizing symmetry of tensor. 2017-03-07 17:47:49 +01:00
James Turner
41f875a729 Silence a warning about log levels. 
These levels will never be set on the output side, so handle them
as default here.
 2017-03-05 21:41:52 +02:00
James Turner
3653508412 Build- and run-time concept of developer mode. 
Make a single Cmake value to expose the build type to code, and use
this to default a run-time ‘developer-mode’ property, which can be
over-ridden from the command line.

Use this to drive the different warning levels. Policies subject to
review, especially whether nightly builds should default to 
developer mode or not.
 2017-02-27 23:37:59 +00:00
Peter Sadrozinski
ec4b9f8542 Alternative terrain engine based on pagedLOD 
- remove TileMgr from sub systems - add to btg terrain engine
 2017-02-26 10:17:15 -05:00
Bertrand Coconnier
7cbdc8b923 Sync w/ JSBSim (use SGPath to manage file names) 2017-02-25 16:22:23 +01:00
Bertrand Coconnier
86d46ce79c Sync w/ JSBSim 2017-02-21 22:35:09 +01:00
Richard Harrison
fa142c9464 Change log level for "prepare_ground_cache(): scenery_available returns false" message as the message occurs at a high rate and seems to be more suited at bulk rather than warn level 2017-02-14 16:08:05 +01:00
Erik Hofman
7133bc5c0f Make MSVC happy 2017-01-30 00:41:27 +01:00
Erik Hofman
ebfadb908c Make sure the AISim code compiles with the latest SIMD code changes in simgear 2017-01-29 15:27:41 +01:00
Viktor Radnai
a26a5d741b Make wheels spin down slowly once off the ground 2017-01-26 20:36:07 +00:00
Erik Hofman
1a0537e493 Silence a few compiler warnings 2017-01-26 15:37:43 +01:00
martymac
ffc7ad6cdf Fix build with Clang 4.0.0. 
Those patches fix errors related to ordered comparisons between pointers and
integers, such as the ones related here on FreeBSD :

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216203
 2017-01-21 21:32:50 +00:00
Erik Hofman
404fad4254 MSVC fix 2017-01-15 09:26:34 +01:00
Erik Hofman
9f9f1c631f Add the latest code for reference in the JSBSim mailing list while bug hunting 2017-01-14 14:33:28 +01:00
James Turner
88fc98f57b Mcc build fix for JSBsim executable. 2017-01-12 12:30:43 +00:00
Geoff McLane
52572ef1f3 Add back a JSBSim.exe build, install 2017-01-12 12:30:42 +00:00
Geoff McLane
c7391668e6 To build JSBSim, add copy from jsbsim-code repo 2017-01-12 12:30:42 +00:00
Erik Hofman
9a71f6348f A new batch of updates, slowly moving forward 2017-01-06 15:02:35 +01:00
Erik Hofman
ffdfdcb6d7 Alter the sequence to allow type conversion 2016-12-23 16:01:49 +01:00
Erik Hofman
31ed6184a9 NExt batch of updates: more use of SIMD instructions. Still work in progress. 2016-12-22 15:14:52 +01:00
Erik Hofman
33f0b83b69 Viktor Radnai: 
There is a Flightgear property called /sim/hitches/winch/automatic-release-angle-deg that can be used to simulate a safety feature built into modern gliders. If the cable angle gets too great during a winch launch, the hook will automatically release the cable. This usually happens when the glider gets almost on top of the winch at the top of the launch without releasing the cable.

Unfortunately winch launching has two separate implementations, one in Nasal for JSBSim, and another one in C++ for YASIM. The YASIM one does not implement this property so I wrote a patch to add this.
 2016-12-22 11:49:15 +01:00
Erik Hofman
342f75d48c Add a missing break statement 2016-12-21 09:50:53 +01:00
Erik Hofman
8b466cb207 One last(?) MSVC fix 2016-12-15 20:08:25 +01:00
Erik Hofman
e845dab6e0 Fix an MSVC error 2016-12-15 10:49:09 +01:00
Erik Hofman
709936a265 MSVC fixes 2016-12-08 01:03:26 +01:00
Erik Hofman
7ec7a8b60c Add the first version of AISim but 2016-12-07 11:05:07 +01:00
Erik Hofman
7ed4a5162e Replace auto_ptr with unique_ptr 2016-12-07 11:03:54 +01:00
James Turner
14942f4e8b Move Yasim properties to /fdm/yasim 
As discussed on the mailing list, make this more consistent with JSBsim.
We could still define common locations for these values as well, but
waiting on positive answer to that discussion on the ML.
 2016-11-25 17:41:05 +00:00
James Turner
9bf337148d Expose c-of-g to property tree in YASim. 
Patch by Henning Stalkhe
 2016-11-18 16:40:38 +01:00
James Turner
7b0c58081b JSBsim lib needs SimGear headers. 2016-11-03 10:01:27 +00:00
James Turner
6382d20f68 Fix flightProperties build. 2016-11-02 14:39:53 +00:00
Erik Hofman
4ee8661eaa Include the cmath header 2016-11-02 15:30:35 +01:00
James Turner
e2f7585d9c Use a Cmake imported target for SimGear 2016-10-30 22:15:54 +00:00
Bertrand Coconnier
c226e08293 Fixed the initial location so that geodetic latitude and ASL are kept in sync. 2016-08-28 12:23:17 +02:00
Erik Hofman
1c8542b65b Remove some debugging statements 2016-08-08 11:19:14 +02:00
Erik Hofman
fa99be7766 Use a bit less intrusive solution 2016-08-08 11:16:21 +02:00
Erik Hofman
02d037d205 Fix the startup position error. I'll leave it to Bertrand wether this is the best way to fix it 2016-08-07 11:41:03 +02:00
Erik Hofman
5ab2d82c89 Show a popup dialog for every SG_POPUP message in the queue 2016-07-20 15:03:15 +02:00
Erik Hofman
f1f2e9f21d Brendan Black: 
when active does not touch the way the YASim jet calculates fuel flow, but separates out the afterburning component of thrust, calculates the TSFC of that component and uses the same method of fuel flow calculation for the afterburning component then adds it to the existing fuel flow

When inactive (atsfc doesn't exist or is zero) it just behaves exactly as before

I finally got around to testing this small patch thoroughly, and I'm satisfied that it doesn't affect anything else & works across many different versions (i've been testing it with current as it has changed over the last 7 months)
 2016-07-17 11:30:07 +02:00