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  • Kerbal Space Program
  • 63,258 Monthly Downloads
  • Supports: 0.25
  • 377,150 Total Downloads
  • Updated 10/09/2014
  • Created 05/06/2014
  • 1,066 Favorites
  • Project Site
  • Comments
  • Release Type: Release
  • License: GNU General Public License version 3 (GPLv3)
  • Newest File:
Support development! **

About MechJeb

Usage instructions:

Add either the AR202 surface-attached case from the Control tab or the MechJeb pod from the Pods tab to one of your vessels.Then use the button on the right side of the screen to access MechJeb window selection interface, and click on the buttons to activate the windows. The windows can be dragged anywhere on screen, and their position is saved and reused among all rockets.



KSP Forum thread

Online Manual

Support Requests

- New interplanetary transfer with porkchop plots
- Add EQ DN and EQ AN to Apoapsis maneuver
- Add "Downrange distance" info item to flight recorder
- Ascent autopilot option to limit the angle of attack
- Maneuver to change the surface longitude the vessel will be over after one orbit
- Added Force Roll option to Ascent AP
- Add more options to SmartASS Surface Mode
- Support for external gimbal extension (see Sarbian's signature for KM_Gimbal support)
- Handles engines with spool time better
- UI rescale setting
- Added a button in KSP stock AppLauncher. See settings to hide the menu handle
- Import landing site from KerbTown/Kerbal-Konstructs and RSS.
- Import Landing sites and Runways from users built files (see
- Don't reenable SmartASS after another autopilot finishes (and an option to disable it in the windows editor Misc category)
- In flight lock of some control while the mouse is over MJ windows
- Replace the arrow selector of some menu with a drop down. Those who don't like it can deactivate it in MJ2 Settings
- Various improvement to engine and gimbal torque information and use
- Various fix
Thanks to those who submited patch for this release : BloodyRain2k, Meumeu, sanedragon, Wetmelon, xytovl


First Previous Page 1 of 8 Next Last
  • #114

    IM LOVING IT! Now has the Game for me a brand new significance.

    MANY THANKS - Really Great Job! Works perfectly with 0.25



    Last edited by Memberchristian on 11/24/2014 5:20:51 AM
  • #113

    how do u open the menu

  • #111

    There seems to be a slight (But VERY annoying) incompatibility with all air intakes. Putting on mechjeb will result in all intakes other than the "pair" first placed to stop in-taking air. Took me hours disassembling,reassembling,uninstalling and restarting to pin point this issue. I am not sure if it is so in stock ksp but i'm am sure that it breaks B9 saber engine intakes  at the very least(again, only one pair of intakes will actually work). BTW, thank you for all the hard work you put into this mod. I really enjoy using it to the point where I now dread actually performing maneuver nodes manually. Though it will be much appreciated if the issue is fixed soon as i really enjoy building ssto's and I hate to see all the designs that involve multiple intakes simply refuse to work.

    Last edited by jerry060599 on 11/12/2014 11:20:20 PM
  • #110

    Why can you delete original windows?  I accidentaly deleted the Delta V and other stuff by accident D: Must redownload...

  • #108

    Does this work with 0.25

  • #109

    works fine - doesnt work with FAR etc in some instances but thats no fault of either mod

    seriously though, if anyone has questions like this chase the official forum thread for activity

  • #106

    cant get the docking to work on this ever.  isnt even worth downloading mechjeb.

  • #107

    check you havent got the rendevous auto still running or that your docking ports are the correct way around (little yellow handle outwards) - since finding these "issues" ive not had one dock fail

    spent some time gnashing this not working myself, but as per usual the issue lay between keyboard and chair :)

  • #105

    I cannot play it on 0.25 im on launch pad and cannot find Mech Jeb tab on right side

  • #104

    Does NOT work with KPS  0.25.  Rockets can barely get off the launch pad and when they do it's a bucking bronco.  Wait for it to be fixed before you use it.

  • #103

    Weird problem: lately, I've been having issues with the landing autopilot...

    ...around 24,000m on a descent trajectory on LA, my computer will just shut off. Completely. I thought it might be a totally unrelated system error, but after the seventh or eighth time over the course of three days, with three different landers, shutting down at around 25km or so, I don't see how it could be anything else. Anybody have any ideas at all? I have a fast processor and a powerful graphics card, and 16GB of ram... 

  • #102

    Dumb Question... where is the MechJeb2RPM.dll? I needs it :\

    "The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...' "

    -Isaac Asimov

  • #99

    after installing this you can use since its just a simple cfg that integrates mechjeb in to any stock pod/capsule and i believe it would be great if both mods would be integrated in one mod. You still need the attachment parts for the custom pods that are out there.

  • #101

    Nope, works with customs pods as well

  • #97

    Had a question about the docking assistance.  I'm trying to piece together in orbit a planetary expedition ship.  Four primary pieces being the central command and extra fuel pod, the lander pod that attaches at the top, and two fuel and engine pods that attach at the sides.

    The problem I have is that there is no way for Mechjeb to determine which end is the 'top' and which is the 'bottom' of my craft.  Docking ports, being round, Mechjeb will just jet into alignment and jet forward till they connect and dock.  This often leaves my engine pods not aligned with the command pod.  If there was a way to designate directions so that the Assist will dock properly aligned, that would be super.

    Trying to get around that, I undock, and manually shift alignment, then check the box on the Docking Assist to distregard safe distance - since they are still only meters away and it just needs to trim a bit to get back in alignment - but instead MJ goes nuts and blasts mono, draining my stores and getting it nowhere.

    Anyone encounter similar situations?  Is there a way to make MJ dock parts at a specific angle?  Is there a way to undock then redock shortly after with MJ without it spazzing out?

    Any help, advice or insight would be greatly appreciated!

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