- Output files are now written in the current directory instead of being written in the aircraft folder (issue GH#337)
- A new exception TrimFailureException is now thrown when trim fails. This eases the detection of the trim failure (previously the exception message needed to be checked).
- An exception is thrown when a latitude higher than 90 degrees is supplied to a <waypoint> control element (PR GH#536)
- Fix the sign of the initial NED climb rate (property ic/gamma-deg) (PR #545)
- JSBSim now checks malformed data in <table> elements. Anything different than numbers and spaces/tabs will be rejected.
- Usage of <location> and <orientation> in engines is now officially dropped (PR #559, #561 and #563). These elements were deprecated long ago in favor of the corresponding elements <location> and <orientation> in thrusters. Therefore the code removed is no-op.
- The computation of the initial rotation rates has been fixed (Issue GH#553). Previously, the rotation rates could be initialized with extremely high values when the vehicle was spawned over the Poles. And for a given set of initial conditions, the initial rotation rates could have different values depending on the initial latitude at which the vehicle was initialized. This now fixed.
- The precision with which values are transmitted thru a socket can now be set via the attribute precision such as <output precision="8"> (PR GH#579)
- Added 2 new methods to FGFDMExec: SetOutputPath and GetOutputPath to specify the path to which the output files will be written.
- All JSBSim exceptions now inherit from JSBSim::BaseException. There still exist std::* exceptions thrown by JSBSim. Cleanup is still in progress.
- JSBSim no longer calls exit() or abort(). Exceptions are thrown instead. This gives the calling application an opportunity to gracefully recover.
We now allow an aircraft to specify both simple gear contact points (which will
be automatically used by old Flightgear builds), and also gear contact surfaces
(which will be automatically used by new Flightgear builds).
When parsing gear specifications, if specified we now use 'wheel-x', 'wheel-y'
and 'wheel-z' in preference to 'x', 'y' and 'z' for the wheel centre point.
These new 'wheel-*' values will be ignored by old Flightgear builds.
So to work with both old and new Flightgear builds, an aircraft should specify
old-style contact points with 'x', 'y' and 'z' as before, and new-style contact
surfaces with 'wheel-x', 'wheel-y' and 'wheel-z', and 'wheel-radius' and
'tyre-radius'.
Contact surface can now be a torus shaped tyre; we find the part of this torus
that is furthest towards the ground instead of using a fixed contact point.
Torus is specified by radius of wheel centred on original contact point,
orientation of a wheel axle, and radius of torus. If both wheel and tyre radius
are both zero the calculations reduce to a fixed contact point as before.
src/FDM/YASim/FGFDM.cpp
Read new optional <gear> attributes:
wheel-axle-x
wheel-axle-y
wheel-axle-z
wheel-radius
tyre-radius
src/FDM/YASim/Gear.cpp
Added new gearCompression() function that calculates gear compression for
wheel with torus tyre. If new radius values are both zero the calculation
behaves like a contact point as before; we also optimse this case to avoid
the extra matrix operations.
Moved old algorithm into gearCompressionOld() function to allow testing
that new algorithm gives same results when wheel and tyre have zero radius.
src/FDM/YASim/Gear.hpp
Added new members:
_wheelAxle,
_wheelRadius
_tyreRadius
Also declare gearCompression() function so it is available for unit
testing.
Added GearVector struct for caching unit vector and magnitude and use for
_compr and _wheelAxle, so we avoid having to calculate magnitude and unit
vector each iteration.
Clarified that _compressDist is vertical movement of gear. Not useful for
gear animations - one must use compression-norm.
src/FDM/YASim/Airplane.cpp
src/FDM/YASim/Model.cpp
src/FDM/YASim/YASim.cxx
Use g->getContact() instead of manually adding compression vector to
g->getPosition() (which no longer gives the correct contact point).
This is by Lars Toenning <dev@ltoenning.de>, Roman Ludwicki <romek21@op.pl> and
SDeAstis <salvatore.deastis@gmail.com>, in 2021 Hackathon.
Also cope with removal of SGPropertyNode::getName() - use getNameString()
instead.
- Fixed an error which prevented the equatorial and polar radii from <planet> to be propagated to the initial conditions.
- The planet radii in <planet> can now be specified by the tags <equatorial_radius> and <polar_radius> which are more self explanatory than <semimajor_axis> and <semiminor_axis> (which are still valid).
- Improved the error messages returned by FGTable: the file name and line number where the error occurred are now printed.
- Check the number of <input> tags for flight controls such as <pure_gain> (GitHub issue #497). This avoids a crash when some or all <input> elements are missing.
- JSBSim now accepts 2 sign conventions for the cross product inertia (xy, xz, yz) in <mass_balance> (GitHub Pull Request #502). The sign convention is specified by the parameter negated_crossproduct_inertia which defaults to true for backward compatibility.
- Turbine engines can now windmill even before they start (GitHub issue #494 and Pull Request #509).
- Fixed a sign error in the computation of aero/h_b-mac-ft (GitHub Pull Request #508 )
- Fixed a bug where FGTable instances were not untied from the property manager during their destruction. This could lead to segmentation faults when the property manager was later destroyed.
- Exceptions raised by FGTable are now instances of the TableException class.
src/AIModel/AIFlightPlan.cxx:
Clarify expression with extra round brackets.
src/AIModel/AIFlightPlanCreate.cxx:
Increased buffer size to match longest possible string.
src/FDM/JSBSim/input_output/FGOutputFG.cpp:
Use cast to avoid comparison of int with enum.
If /sim/highlighting/enabled is true, we highlight animated objects under the
pointer, and also highlight other objects that are animated by the same or
related properties.
The intent here is to be able to give a visual indication of what cockpit
controls do or what cockpit controls affect particular aircraft objects - for
example moving the pointer over the flaps will highlight the flaps and also
highlight any controls or rotary indicators in the cockpit that are associated
with the flaps.
To make this work, we have to discover associations between properties. This
is currently done for YASim (e.g. associations between /controls/flight/flaps
and /surface-positions/flap-pos-norm) and autopilot filters (e.g. with
the 777, digital filters associate /controls/flight/rudder-nul with
/fcs/fbw/yaw/rudder-ratio-out). We don't currently gather associations between
properties in JSBSim
We also detect associations between dialogs, menus and keypresses and
properties, which is used to populate /sim/highlighting/current with
information about dialogs, menus and keypresses that are associated with the
currently highlighted nodes' properties.
Details:
src/GUI/Highlight.cxx
src/GUI/Highlight.hxx
src/GUI/CMakeLists.txt
src/Main/fg_init.cxx
New subsystem called 'highlight', with support for registering and
recovering links between menus, dialogs, keypresses and OSG node
animations.
Provides a function Highlight::highlight_nodes() which highlights
related nodes using internal NodeHighlighting class, and populates
/sim/highlighting/current with information about related dialogs, menus and
keypresses.
The NodeHighlighting class works by making nodes use an alternative
StateSet which shows up as a distinct material on screen. We remember each
highlighted node's original StateSet so that we can un-highlight. We update
the material parameters using a listener for /sim/highlighting/material,
which allows some control over the appearence of highlighted nodes.
src/FDM/flight.cxx
src/FDM/flight.hxx
Added virtual method FGInterface::property_associations() which returns
property associations from the FDM. Default implementation returns empty
set. Implemented in YASim, but not (yet) in JSBSim. Uses a simple function
pointer at the moment to avoid requring FDMs to use recent C++ features.
src/FDM/YASim/FGFDM.cpp
src/FDM/YASim/FGFDM.hpp
src/FDM/YASim/YASim.cxx
src/FDM/YASim/YASim.hxx
Gathers information about property associations on startup such as
/controls/flight/flaps => /surface-positions/flap-pos-norm, then
YASim::property_associations() overrides default implementation to return
these associations.
src/Autopilot/analogcomponent.cxx
src/Autopilot/analogcomponent.hxx
src/Autopilot/digitalfilter.cxx
src/Autopilot/inputvalue.cxx
src/Autopilot/inputvalue.hxx
Filters now gather information about their input/output properties and
register with Highlight::add_property_property(). For example this makes
highlighting work on the 777, where pilot controls affect control surfaces
only via filters.
src/GUI/new_gui.cxx
Scan menus, keypresses and dialogs and register associations with
Highlight::add_*().
src/GUI/property_list.cxx
src/GUI/property_list.hxx
src/GUI/FGPUIDialog.cxx
Added <readonly> flag to property-list. If set, we don't show .. or . items
and don't respond to mouse/keyboard.
Used by fgdata's new Highlighting dialogue.
src/Model/acmodel.cxx
src/Model/acmodel.hxx
Visit the user aircraft's scene graph when it is loaded, gathering
information about osg::Node's that are animated by properties, and register
these associations with Highlight::add_property_node().
src/Viewer/renderer.cxx
When scanning for pick highlights, use Highlight::highlight_nodes() to
highlight animated objects under the pointer and related objects.
- Always set useDefault to false when calling SGPropertyNode::tie()
- Mass flows can now be specified using SI unit (kg/s)
- Add a new property propulsion/fuel_freeze to freeze fuel consumption.
- Add a new flag DONT_EXECUTE_RUN_IC that can be specified to FGFDMExec::ResetToInitialConditions. When specified, this flag avoid calling FGFDMExec::RunIC when executing FGFDMExec::ResetToInitialConditions.
- Fix a bug in <linear_actuator> that resulted in erroneous output values when the input was oscillating around the zero value.
- Add an assert that forbids to set the value of FGPropertyValue when the property was specified with a minus sign.
- Fix the compatibility with recent versions of MinGW64
- Fix ws2tcpip.h casing for compilation on case sensitive OS.
- Improve the templating of FGPropertyManager::Tie().
- Expand FGParameterValue exception message (James Turner)
- TurboProp: Filters out negative powers when the propeller is not rotating
Some propellers could start windmilling very easily under mild wind conditions (11 kts). And in stronger wind the propeller could even generate some power and torque strong enough to turn the aircraft upside down.
This was due to the combination of:
- Propellers generating power (wind turbine) for advance ratio higher than 1.0 (is it plausible !?!)
- Powers and torques computed with ludicrously small RPMs.
So this commit basically filters out extremely small RPMs in order to avoid huge numbers resulting from division by small values.
- Lower the allowable minimum propeller inertia from 1e-3 to 1e-6
- Account for the vehicle angular rates in the computation of propellers local velocities.
- Apply the engine torque to the vehicle (The aerodynamic torque was applied until now but it is the engine generated torque that the aircraft is actually submitted to)
- Prevent FGPiston from sending negative powers to thrusters
- Fixed FGMagnetometer : no need to update the magnetic field every time step.
- FGMassBalance: remove a direct reference to FGGroundReactions
* Support the native fdm, gui and ctrl protocols over DDS
* Add fgfdm_log as an fdm over DDS command line logging utility
Usage:
--native-fdm=dds,out,60
--native-ctrls=dds,in,60
etc.
It was supposed to be in ft/min, but everything except AIAircraft was
using it as ft/sec. Change the name to AIBase::vs_fps and ensure the
same unit is used everywhere.
Setting useDefault to true is equivalent to using unitialized variables we are getting whatever is currently in the memory whether it is relevant or not.
Make this exception inherit std::runtime_exception, so that it’s
caught by the ‘normal’ exception cases in FG boostrap.cxx
This is the only exception I can find in the codebase, which does not
inherit from either std::exception or std::string, so this is to fix
‘unknown exception’ errors reported in the wild.
Sentry-Id: FLIGHTGEAR-1C
Check for NaNs after each FDM iteration, and freeze the sim if found.
Report this condition to the user and to the reporting backend, along
with the last valid position.
Probably needs some refinement, this is just a first guess.
Sentry-Id: FLIGHTGEAR-AM
We previously only showed the magnitude of the thrust; this patch uses the sign
of first element of thrust vector. Makes things less confusing if an engine is
stopped or otherwise causing drag rather than thrust.
Throwing an exception was too harsh. Instead the clipping is ignored and a warning message issued.
Reintroducing the commit 90a04a that has been inadvertently removed.
