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  • Kerbal Space Program
  • 154,633 Monthly Downloads
  • Supports: 1.0.2
  • 863,180 Total Downloads
  • Updated 05/17/2015
  • Created 05/06/2014
  • 1,647 Favorites
  • Project Site
  • Comments
  • Release Type: Release
  • License: GNU Lesser General Public License version 3 (LGPLv3)
  • Newest File: MechJeb 2.5.1 for KSP 1.0.2
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

- Lot of bug fixed related to KSP 1.0

- Better precision for the landing auto pilot when using parachutes



First Previous Page 1 of 23 Next Last
  • #361

    Ok so I just downloaded the latest KSP from steam yesterday along with the newest version of Mechjeb which claims to be compatilbe with this version.  I used this before with the .90 version and it worked pretty well.  The main reason I use the Mech Jeb is for the auto ascent and descent.  I can do both manuvers but they become pretty redundent after a while.  The problem I'm having is that for the auto ascent using a proven craft that I have put into orbit many times manually it seems that MechJeb more often than not somehow destroys the ship while in transit.  In the rare occasions that it doesn't destroy the ship it puts the initical apaosis up to the 75k or whatever I designate and it even makes a manuver node to go ahead and finish out the orbit but it doesn't execute the orbit manuver so the ship just drops back to the planet.

    Further when trying to use the auto descent on Kerbin it frequently burns the ship up in the atmosphere.  I'm not sure if that is an inability to deal with the new atmosphere heating elements or what.  Still trying to use the auto lander on the moon it almost always crashes the ship into the surface at pretty incredible speeds.  Its like its waiting till the last possible second for a max burn and ignoring the fac that it needs to make adjustments to the angle of the ship and the time it will take to make those adjustments.  Eitherway neither auto ascent nor auto landing is working at the moment.  I hope this is fixed soon and thx for all your efforts.  Without mechjeb I will probably get bored with kerbal really fast :)

  • #358

    Could someone please tell me how to download mods for older versions of KSP... B9 and Procedural Parts are not out there yet for 1.0.2, so I'm playing 0.90 because they are critical for my gameplay experience

  • #360
    Re: Yes

    Simply go to the other downloads tabs!

  • #357

    so yeah dont know whats with mechjeb but i tell to specifically to start my ascent turn at 13k  and no matter how i change setting it starts at 1k and cannot get any ship ive tried to orbit....

  • #359

    yeah I have had that problem too. Just get it up to the altitude you want manually and engage the auto pilot to begin the gravity turn... not a perfect solution, but it is what it is. 

  • #354

    I've tried everything to fix any issues i'm having with mechjeb but its still not working

    ive had the rocket gravity turn the oposite direction

    ive had the rocket not even start the gravity turn

    numerously it has flipped over all rockets ( even premade)

    and worst of all! i cant even circulize my orbit to mun! it just warps to the surface and crashes!


    this update release was way beyond premature!

  • #352

    Hiya! Is there any way to get to use all of Mechjeb's modules without having to research them first? I tried fiddling with the CFG but that only allows me to place the part, not use the autopilot. 

    I somehow found a way in one of the earlier versions, didn't even have to place any parts, it apparently ran off the cockpit.

    I liked the easy entry it gave to space travel and would love to get to use it again, so I hope one of you nice people can help me.

    Oh! Forgot to mention, I don't play in Career mode. Science is the way for me.

  • #355

    Were you changing the values that followed 'unlockTechs'?

  • #350

    Hi guys, I installed the latest version today but now my assent guidence is now missing. I have all the tech unlocked but it will not show up on the launch pad. I have even tried starting a new game and getting the correct tech any ideas?

  • #351

    Did you add the AR202 case or Mechjeb command pod to your rocket?

  • #348

    i have a proble, when mechjeb do the gravity turn, it flips the rocket upside down every time, its not a problem with the centre of mass or something like that. need help!

  • #356

    Change the high of the Gravityturn. Klick on Acent Path Editor and change the high to 15-20km.

  • #346

    Ok, definetly need some help here. Whenever I use ascent guidance, the rocket goes up just fine and then does the 2x warp to edge of atmosphere. But when it's time to circularize, it makes the node, doesn't warp to it, and doesn't execute the node. It just says "coasting to circularization burn", even when the rocket has passed it. I've tried multiple mechjebs, I've tried single mechjebs, I've tried putting batteries and solar panels on every stage. I've even tried disengaging autopilot and circularizing under maneuver planner, but it  still does the same thing. The only thing that sometimes works, is to go ahead and jettison the booster stage. This sometimes allows the mechjeb to circularize the rocket, but then I won't have the delta-v to do whatever it was I was going to do (for example I'm trying a Saturn V rocket design atm). It doesn't happen on every rocket I make, but when it does, it drives me batty because I have to revert and scrap the rocket.

    Edit: So I redesigned the Saturn V I was working on and now it went up a circularized just fine. So idk what the deal is.

    Last edited by kerbal223 on 5/23/2015 5:55:02 AM
  • #347

    I've noticed that if  you craft isn't able to rotate to the correct angle mechjeb won't warp to the node. This can happen if you run out of electric, or don't have anything on the craft to turn in space. (reaction wheels)

  • #342

    I'm pretty sure the problem is related to the battery of mechjeb. When the motors do not generate electricity grabs the mech no external batteries, but their own and not recharged.

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