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  • Kerbal Space Program
  • 46,899 Monthly Downloads
  • Supports: 1.0.5
  • 1,282,158 Total Downloads
  • Updated 12/03/2015
  • Created 05/06/2014
  • 2,013 Favorites
  • Project Site
  • Comments
  • Release Type: Release
  • License: GNU Lesser General Public License version 3 (LGPLv3)
  • Newest File: MechJeb 2.5.5 for KSP 1.0.5
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

* 1.0.5
* Flight Recorder Graph module
* Education mode option (rename SmartASS to SmartACS) see MM patch here 
* Improvement to the Attitude control
* Dynamic Pressure limiter to replace the now useless terminal velocity
* Attitude control speed limiter to save some RCS
* Add "periapsis in target SoI" InfoItems
* Add "minimum DV required for capture by target" InfoItems
* Add "Docking guidance: Angular velocity" infoitem
* Add electric throttle limiter to avoid empty batteries on ion powered craft


First Previous Page 1 of 32 Next Last
  • #501

    Mechjeb is of no use other than follow a navball if the computer auto pilot dont make orbit in Real solar system. try to fly a real rocket in orbit using wasd or a joystick. we would have another columbia or challenger desaster. Just saying. I think it still geared to stock ksp solar system which worked evertime. hit autopilot and launch, and in a few minutes it was orbiting awesome. I am truly frustrated to a point where it took the fun out of the game. It's cool watching the mechjeb launch to a perfect orbit, then we can focus on building or exploration. Dont mean to be an ass but can this be fixed? Im sure i''m doing things wrong as well, but I thought it would be the same procedures as before.

    Another landing like that and I will be a Japanese ACE!

  • #498

    Mechjeb worked awesome in modded ksp and stock, but in RSS it does not work at all. I have tried for a week to make orbit with it, which in general it should, just as before. Set the orbit alt and let fly. I set the orbit in real solar system from 160 low orbit to 250 to 1000, none of these made orbit. As soon as it reaches "AP" it plumits to the earth. Im not using realism overhaul, just real solar system. But I have tried both. I followed several written tutorials but with no success. There is on on wiki but might as well just do everything manually, by the time you have to adjust things its already pass the mark or place you have to access or active soomething. Can somebody help?

    Another landing like that and I will be a Japanese ACE!

  • #496

    Is Mechjeb compatible with New Horizons Mod ? Because i cant use it anymore for interplanetary transfer. Either it says "Error Creating the Node" or " The target must be in the same Sphere of influence" Any Idea to fix this without unistalling New Horizons ? 


    Thanks ;)

  • #495

    As ustonavit MOU ?

  • #494

    This does seem to work for me however it makes my fps plummet from a solid 60 fps with other mods and everything on full down to 10 fps with everything turned down as low as I dare and with no other mods.

    Anyone got any ideas?

  • #493

    The creator of the mod should make tutorial how to use the tech correctly

  • #490

    I really like this, the autopilot feature worked like a feather, it helped me rendezvous things in space easily and it make me progress forward, thx keep up the good work with updates!

  • #489

    Barely any features work, the auto pilot and ascent assistance work barely, the orbit info, ascent info work fine.  When I try to dock, rendezvous, or transfer to a planet it doesn't do anything at all.  I can't even create a maneuver node.  Please fix this, I made so much progress and I loved how perfect everything used to work.

  • #488

    Mine says a file is in the wrong place and it will not work.. (MechJeb2.dll)

  • #497

    its my file is in the wrong place

  • #487

    I am having problems with MechJeb as well.

    the rendezvous autopilot will work fine for the first burn, but from then on it will fire the engines as soon as it is lined up with the target. It is not waiting for the correct time to burn.

    This usually dumps the ship out of orbit.

  • #491

    If that, you have to jettison the main engines, use only the RCS.

  • #486

    Any chance of autom8 returning, or any means of sripting Mechjeb? Maybe kOS compatibility? that would be awesome

  • #481

    I can not seem to get it to work, I am running 1.0.5 and have the latest version, and I dropped it into my gamedata folder right above 'squad'. Is this not the right place? Or am I just missing something.

  • #499


    use ckan to install mods

    Another landing like that and I will be a Japanese ACE!

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