Trajectories CKAN

The mod displays trajectory predictions, accounting for atmospheric drag, lift, etc. Works with the stock aerodynamic model, and also with Ferram Aerospace Research (FAR).

License: GPLv3

Game Version: 1.10.0

Downloads: 392,766

Mod Website: Forum Thread

Followers: 758

Outdated Mod

This mod is not known to work with the latest version of Kerbal Space Program. Proceed with caution.

Information Changelog Stats

The mod displays trajectory predictions, accounting for atmospheric drag, lift, etc. Works with the stock aerodynamic model, and also with Ferram Aerospace Research (FAR).

If you have FAR installed on KSP 1.0.5, make sure it's not version v0.15.5.3_von_Helmholtz, as it has an issue that might break your vessel when Trajectories is installed as well. Use the version of FAR v0.15.5.4_Hoerner. Note that FAR versions after Hoerner are also known to be incompatible (trajectory not affected by atmosphere), which will be fixed some time in the future.

Version 2.3.4 for Kerbal Space Program 1.10.0

Released on 2020-07-12

v2.3.4 for all versions of KSP from 1.3.1 to 1.10.x

  • 2020-07-12

Changes since the last release

  • Fixed 'Invalid Cast' bug when using FAR

Download (465.87 KiB)

Version 2.3.3 for Kerbal Space Program 1.10.0

Released on 2020-07-09

v2.3.3 for all versions of KSP from 1.3.1 to 1.10.x

  • 2020-07-09 Note. This is probably the last Trajectories build that will cater for all KSP versions, Builds for KSP 1.3.1 to 1.7.2 are planned to be moved into a separate branch, anyone who wishes to use Trajectories on the older versions of KSP will have to make their own private builds from the backport branch.

Changes since the last release

  • Support for KSP 1.10.x
  • OldGui has been removed.
  • Minor graphical changes to the in-flight trajectory, nicer line and markers are now more stable.
  • Added a green target marker to the in flight trajectory.
  • NavBall target and crash markers have been fixed and updated, target is now a green circle and predicted crash site is now a red square.
  • Due to performance issues with larger craft, the Cache is now enabled by default. For higher precision, it can still be turned off manually.

For Developers

  • A variable Watcher window has been added that can also use the Telemetry module, see the CONTRIBUTING.md file for more info.
  • The Profiler can now use the Telemetry module.
  • Fixed Profiler entries not updating when the Profiler GUI is re-spawned.

Download (465.79 KiB)

Version 2.3.2 for Kerbal Space Program 1.9.1

Released on 2020-06-12

v2.3.2 for all versions of KSP from 1.3.1 to 1.9.x

  • 2020-06-12

Changes since the last release

  • Descent Profile angles are now relative to the prograde/retrograde toggles. i.e. old style 135° is now 45° Retrograde. Old style angles can still be entered via the text input boxes or the API and will be converted automatically.
  • Descent Profile angles can now be entered via text input boxes.
  • GUI is now clamped to the screen area, eliminating it from being off screen after resolution or scale changes.

For Developers

  • New API functions added for the Descent Profile ResetDescentProfile DescentProfileAngles DescentProfileModes.
  • Profiler is now clamped to the screen area, eliminating it from being off screen after resolution or scale changes.

Download (392.21 KiB)

Version 2.3.1 for Kerbal Space Program 1.9.0

Released on 2020-02-25

v2.3.1 for all versions of KSP from 1.3.1 to 1.9.x

  • 2020-02-25

Changes since the last release

  • Support for KSP 1.9.x
  • GUI not holding position bug #172 fixed.
  • Target text entry keyboard lockout bug fixed.

For Developers

  • Profiler GUI disappearing and not holding position bugs fixed, similar issues to #164 and #172.

Known Issues

Download (384.47 KiB)

Version 2.3.0 for Kerbal Space Program 1.8.1

Released on 2019-12-03

v2.3.0 for all versions of KSP from 1.3.1 to 1.8.1

  • 2019-12-03

Changes since the last release

  • Support for KSP 1.8.x
  • In-Flight trajectory not showing bug fixed by Xyphos
  • GUI disappearing bug #164 fixed thanks to whale2 and mwerle

For Developers

Known Issues

Download (335.19 KiB)

Version 2.2.3 for Kerbal Space Program 1.7.2

Released on 2019-06-20

v2.2.3 for all versions of KSP from 1.3.1 to 1.7.2

  • 2019-06-17

Changes since the last release

  • Recompiled for KSP 1.7.2
  • Forces Cache is now disabled by default

For Developers

Known Issues

Download (286.26 KiB)

Version v2.2.2 for Kerbal Space Program 1.6.1

Released on 2019-02-14

v2.2.2 for all versions of KSP from 1.3.1 to 1.6.x

  • 2019-02-14

Changes since the last release

  • Support for KSP 1.5.x and 1.6.x

  • Japanese translation updated, thanks to ebigunso

  • Fix drifting target marker when above 100 km (Issue #140)
  • Read KSC location for targeting from the game, instead of a hardcoded value
  • ModuleManager is no longer bundled with Trajectories but it is still a requirement
  • New release format to allow the facilitation of one download zip for all KSP versions from 1.3.1 onwards.

For Developers

  • KSP1.3.1 Back port builds can now be built from the Visual Studio Config selector, see CONTRIBUTING.md
  • Support for development on mac now included, also with help in the CONTRIBUTING.md file (Sir Mortimer)
  • API Change: If SetTarget's alt parameter is null or not given, the altitude is calculated from the surface altitude.

Download (239.04 KiB)

Version v2.2.1_For_KSP1.4.3 for Kerbal Space Program 1.4.3

Released on 2018-04-28

v2.2.1 for KSP 1.4.3

  • 2018-04-28

Changes since the last release

  • GUI window would reset to screen center on a game restart if it was hidden in the previous game, now fixed.
  • In-Flight trajectory ground target marker would sometimes appear on screen when behind the camera view, now fixed.

Download (124.86 KiB)

Version KSP1.4.2-v2.2.0 for Kerbal Space Program 1.4.2

Released on 2018-04-02

v2.2.0 for KSP 1.4.2

  • 2018-04-02

Changes since the last release

  • Japanese translation updated. Many thanks to UresiiZo for correcting the mistakes.
  • Italian translation updated. All thanks go to Brusura for the translation fix.
  • German translation updated. Lots of thanks to nistei for updating the mistakes.
  • French translation updated. Huge thanks to d-faure for correcting the syntax.
  • GUI settings are now persistent again.
  • Black toolbar icons when Texture Settings not set to Full-Res bug fixed.
  • In-Flight trajectory ground target marker covering entire screen when camera is close bug fixed.

For Developers

  • New API functions added GetTimeTillImpact, two for the Descent Profile ProgradeEntry RetrogradeEntry and some for the Trajectories version. GetVersion GetVersionMajor GetVersionMinor GetVersionPatch

Download (124.39 KiB)

Version v2.1.0 for Kerbal Space Program 1.4.1

Released on 2018-03-21

v2.1.0 for KSP 1.4.1

  • 2018-03-21

Changes since the last release

  • Trajectories license has been changed from MIT to GPL-3.0-or-later. Please see the LICENSE.md file for more details.
  • Russian translation updated. Many thanks to Fat-Zer for correcting the mistakes.
  • Chinese translation updated. Many thanks to studentmain for rewriting the translation.
  • Added Japanese, German, French, Italian and Portuguese languages. If you know any of these languages, please consider helping out with translations.
  • A big cheers and a beer to Jebs_SY for his help in fixing a rendering issue on the MapView and the Target Waypoint bug.
  • ModuleManager updated to v3.0.6

Known Issues

  • Sometimes In-Flight trajectory ground target marker can cover entire screen when camera is close.

Download (123.64 KiB)

Version 2.0.0 for Kerbal Space Program 1.3.1

Released on 2018-02-15

v2.0.0 for KSP 1.3.1

  • 2018-02-15

Changes since the last release

  • Completely new and overhauled user interface, based on the DialogGUI system. Includes (automated) localizations for Russian, Spanish and Chinese (traditional). If you know any of these languages, please consider helping out with translations. Send all Thanks and Kudos to PiezPiedPy for this amazing contribution!
  • In-Flight trajectory vector line and ground marker persistence bug fixed.
  • ModuleManager updated to v3.0.3
  • When combined with FAR, aerodynamic forces calculated on a packed vessel would lead to NRE's. Vessels are now no longer calculated when a vessel is in a packed state. Thanks go to Alex Wang for this bug fix.
  • Higher precision and better performance through more advanced numeric techniques using an RK4 integration method. Try disabling the Cache for more precise predictions, predictions that should not kill your FPS anymore. Courtesy of fat-lobyte aka Kobymaru.

For Developers

  • API changes to help catch NRE's from improper calling of the API methods.
  • New API method HasTarget() checks if a target has been set.
  • Flickering entries bug in the Profiler is fixed :)
  • Added Reset averages & Show zero calls buttons, a Framerate limiter, avg calls and frame counter to the Profiler.

Known Issues

  • Sometimes In-Flight trajectory ground target marker can cover entire screen when camera is close.

Download (104.59 KiB)

Version 1.7.1 for Kerbal Space Program 1.3.1

Released on 2017-10-27

v1.7.1 for KSP 1.3.1

  • 2017-10-13

Changes since the last release

  • In-Flight trajectory overlay now uses GLUtils from MechJeb2 for rendering.
  • Fixed In-Flight trajectory for non-atmospheric bodies

For Developers

  • Added a Jupyter notebook for descent force analysis.
  • Added the Bug Reporting section to CONTRIBUTING.md file.

Known Issues

  • Sometimes multiple In-Flight trajectory vector lines appear and target marker can cover entire screen when camera is close.

Download (77.34 KiB)

Version 1.7.0 for Kerbal Space Program 1.3.0

Released on 2017-07-08

v1.7.0 for KSP 1.3.0

  • 2017-07-08

Changes since the last release

  • Improved precision by accounting for reynolds number in drag. Fixes Issue #84.
  • Fix crash when turning on In-Flight trajectory display while in Map view. Fixes Issue #102. Thanks to PiezPiedPy!
  • Prevent click-through in certain situations. Thanks to PiezPiedPy!
  • Numbers in the user interface don't change as quickly anymore, allowing for better readability
  • Deviation readout now switches from E to W and from N to S instead of just showing negative numbers

For Developers

  • Added a bridge to the newly created Telemetry module, allowing for nice graphs and better debugging of prediction precision.
  • Updated Profiler UI to new Canvas system. Thanks to PiezPiedPy!
  • Added documentation for contributers in CONTRIBUTING.md file with style guidelines, help for building, debugging and much more.

Known Issues

  • In-Flight trajectory for non-atmospheric trajectories is incorrect and jumpy

Download (79.08 KiB)

Version 1.6.8 for Kerbal Space Program 1.3.0

Released on 2017-06-13

v1.6.8 for KSP 1.3.0

  • 2017-06-13

Changes since the last release

  • Fixed in-flight targeting cross remaining in scence even after trajectory display was disabled.
  • Added toggle for in-flight trajectory display. Fixes Issue #96.

Known Issues

  • Trajectory prediction is still fundamentally incorrect. See Issue #84.
  • In-Flight trajectory for non-atmospheric trajectories is jerky and jumpy.

Download (77.09 KiB)

Version 1.6.7 for Kerbal Space Program 1.3.0

Released on 2017-06-09

v1.6.7 for KSP 1.3.0

  • 2017-06-09

Changes since the last release

  • This release is brought to you by fat-lobyte (aka Kobymaru on the Forums)
  • Update ToolbarWrapper for blizzy78's Toolbar. Fixes Issue #78.
  • Enable Trajectories window in flight scence.
  • Implement in-flight trajectory line display. Please test and give feedback!
  • Fix Parenthesis silliness in .version file to make it valid JSON again. Thanks, ggpeters!
  • Update Module Manager to v2.8.0. Thanks to PiezPiedPy!
  • Disable Click-through. Thanks to PiezPiedPy!

Known Issues

  • Trajectory prediction is still fundamentally incorrect. See Issue #84.
  • In-Flight trajectory for non-atmospheric trajectories is jerky and jumpy.
  • In-Flight trajectory leaves targeting cross in the scene, even when disabled.

For Developers

  • KSP directory path is not hardcoded anymore. You can set up an environment variable in your Operating System named KSPDIR that points to the KSP installation directory.
  • Revamped build scripts for Visual Studio. Thanks to PiezPiedPy!
  • Added simple profiler class. Thanks to PiezPiedPy!

Download (77.05 KiB)

Version v1.6.6 for Kerbal Space Program 1.2.2

Released on 2017-01-25

  • Bump compatible KSP version to 1.2.2
  • Added a readout for the distance from the impact position to the target position
  • Landed vessels can now be targeted
  • Waypoints can now be targeted

Thanks @Kobymaru for these improvements :)

Download (71.48 KiB)

Version v1.6.5 for Kerbal Space Program 1.2

Released on 2016-10-23

  • fixed stock toolbar button that wasn't removed when exiting flight view
  • removed debug module (that was spamming the loading log in release builds)
  • fixed .version file for KSP-AVC

Download (70.63 KiB)

Version v1.6.4 for Kerbal Space Program 1.2

Released on 2016-10-19

  • update for KSP 1.2.0
  • improved API for kOS

Download (70.68 KiB)

Version v1.6.3 for Kerbal Space Program 1.1.3

Released on 2016-08-29

  • Added prediction of SoI changes after aerobrake (also fixes a bug when aerobraking from an escape trajectory)
  • Fixed bug with wings that were incorrectly predicted with stock aerodynamic model
  • Improved ground impact detection (better collision check against relief)
  • Improved impact indicator in map view (not hidden underground anymore)
  • Added API for kOS (thanks to CalebJ2)
  • Automatic configuration reset if the configuration file is invalid or empty
  • Improved icon rendering for Blizzy's toolbar

Download (64.53 KiB)

Version v1.6.2 for Kerbal Space Program 1.1.2

Released on 2016-05-18

  • fixed exceptions at game startup
  • fixed navball markers display

Download (63.62 KiB)

Version v1.6.1 for Kerbal Space Program 1.1.2

Released on 2016-05-01

Fixed exception spamming due to navball indicators issue with KSP 1.1 (they are still not visible, but don't spam exceptions anymore)

Download (63.67 KiB)

Version v1.5.1 for Kerbal Space Program 1.1.1

Released on 2016-05-01

Fixed exception spamming due to navball indicators issue with KSP 1.1 (they are still not visible, but don't spam exceptions anymore)

This version works for KSP 1.1 and KSP 1.1.1

Download (63.66 KiB)

Version v1.6.0 for Kerbal Space Program 1.1.2

Released on 2016-05-01

Update for KSP 1.1.2

Download (63.66 KiB)

Version v1.5.0 for Kerbal Space Program 1.1.1

Released on 2016-05-01

Update for KSP 1.1.0 and 1.1.1 (same version works for both)

Download (63.64 KiB)

Version v1.4.6 for Kerbal Space Program 1.0.5

Released on 2016-03-28

  • update for latest FAR version (tested with v0.15.5.7 "Johnson")
  • cache system can now be disabled in the settings window (should never be needed, but can help troubleshoot issues)
  • code refactored for cleaner integration with multiple aerodynamic models

Download (63.98 KiB)

Version v1.4.5 for Kerbal Space Program 1.0.5

Released on 2016-03-12

No changelog provided

Download (63.74 KiB)

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