Mechjeb orbit 6. Feb 11, 2018 · Hi all. If the orbit is not circular MJ2 won't be able to calculate the ejection in a reliable manner. Mar 25, 2020 · By 'near-Kerbin I mean pretty much anything inside Mun's orbit. 7. I've built a rocket that's a pretty good likeness of an Atlas -- not the early SM-65 ICBM (that was the first version), but the next generation that actually launched John Glenn et. This is useful for setting up things like CommNet constellations. I don't have to worry about getting to orbit. The Kerbal Space Program subreddit. It's an expensive maneuver depending on how much you need to change, and it may actually be cheaper to break it into more maneuvers. When using MechJeb because it's a simple click to add a circularization node followed by another click to execute it. Oct 20, 2017 · Hey, all, I'm having a problem with MechJeb's Landing Autopilot. Vehicle is aerodynamically sound, and I can fly it manual with no issues. Do I have to unlock Mechjeb in Sandbox mode? No. Once circularized, set the space station as the target. 0 and went back to 1. With a bit of practice, this will get you within 5km. [MJ] fine tune distance as desired. Now use MJ2's maneuver planner and use the "transfer to another planet" option. There is no easy way to do that last part with mechjeb but still that last node tweak is really easy. Now I will do somethings because I can do them better or I enjoy it, and I let mechjeb do all the boring work. So, zoom out to map view, set Kerbin to Orbit looks PERFECT (fully zoomed in, the blue line is barely off the green line anywhere in the orbit). 2) Get into a higher orbit and let your target catch up with you. Eve's inclination relative to Kerbin doesn't matter much, since Mechjeb will ajust your orbit the minimum amount needed to get an encounter at the intended altitude. but initial orbit is not hyperbolic, it's Sep 14, 2015 · There is a mod. Select "change longitude of ascending node" and enter in 24. Unfortunately, the trans section under orbital operat May 2, 2013 · MechJeb reports the same phase angle as the text document, so we should be good. IDK if this helps, but it did for me. from space it's maneuver assistance with circulariztion mode in it. Or instead of going 90° right off the bat go something like 75° or 80°. Anyone have any tips on how to get mechjeb a clue? Apr 14, 2022 · I ask those with experience in real solar system how the gravity turn goes. I entered at a orbit of 2000k and wanted to orbit the planet at 100k. 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. php?file_id=07417282472420864207 Jan 10, 2016 · Very nice mod! I usualy use MechJeb for launching into orbit, but for some reason it always fails and falls back into the atmosphere. i'd suggest you learn to reach orbit, learn to rendezvous and dock and learn to, at least, get to the moon on your own before you start down the mechjeb path. Click the research button. If I'm after something rather specific, I will do the math first and figure out exactly what I need to do. Kerbal Engineer will tell you your current orbit, and I believe PreciseNode can tell you the inclination of the resultant orbit from a maneuver node. This will drop your periapsis just enough to cause you to advance 120° relative to the first satellite when you get back to apoapsis. Also, FYI, MechJeb isn't really good at doing Aug 25, 2018 · I mean, its probably only meaningful if you decide you want to go the whole hog here but you'd almost just be replicating MechJeb's Resonant Orbit function but your tool  would be pre-calculating the resonance required for the number of sats in the network. The “Injection Δv” value is the delta-v required to move from the Jan 11, 2017 · CKAN has all the release of MechJeb. The MechJeb menu is not showing. I use Mechjeb to intercept while in orbit, but I didn't realize it had a feature to time the actually launch to intercept. Switch over to the ship you just met in orbit, select 'control from here' on the docking port that you plan to connect with. You may check the "No insertion burn" checkbox instead if you intend to perform a fly-by or aerobraking maneuver. See full list on github-wiki-see. I played with this all weekend and couldn't get into orbit using only the ascent guidance. When you get a contract like this the 'intended orbit' marker has little orbs along ityour orbital direction needs to match the direction these orbs travel. once in an orbit round the sun, [MJ] hohmann transfer to the planet of choice. I don't use the rendezvous tools in the MechJeb, because they are confusing. Mar 18, 2017 · You can use mechjeb to circularize at a particular height, so long as that height is between your current apoapsis and periapsis. Just what to do. So far as I know there's no function to set up a complete orbit. burn prograde at periapsis manually (or drop node and execute) until you are on an escape trajectory. 23 Scilab scripts Scilab (see external tools section) blog post (see blog post for . 4. Circularize your orbit, drop one satellite off, and then use MechJeb to get a resonant orbit with 2/3 the period. interface_mode: MechJeb. When I open the editor, it has the information for Since MechJeb autostaging does not support 1. 5 stage, and you have to manually drop the engines on the way to orbit the ∆v stage analysis will be off, MechJeb has no information and cannot predict when you will drop the stage, so PVG knows nothing about it so the predictions will be off. I also wouldn't be surprised if MechJeb had a "Make my oribit equatorial" button Drag it out prograde until you touch Minmus' orbit then keep hitting + on the controls (in the bottom left) to advance an orbit until the maneuverer orbit reaches Minmus when it reaches the AN/DN node (you may need to swap which node your maneuverer is on if there isn't enough time to reach Minmus before it reached AN/DN) May 6, 2014 · Autopilot, Information displays, and general Automation plugin. Use it to plan out maneuvor nodes that'll circularize your orbit to as perfect as you can, then use your throttle and such to get it to an acceptable level. 3, using MechJeb2 for my rocket ascent. If you could suggest some input I could put into MechJeb for getting to orbit, that would be great! I was following a tutorial from Carnasa on YT to build my first RO orbital rocket, but in the tutorial he doesn't use MechJeb to get to orbit, and I'd like to do that. Then simply drag the node itself along your orbit until you intercept the Mun. This should leave us on a nearly synchronous orbit very closely above our desired target. I have the "First Artificial Satellite" contract and the "First Scientific Satellite" contract, but I also took a contract for a polar satellite (which is also fulfilled) and for a solar-powered satellite. how can i fix this? < > Feb 4, 2017 · Steam Community: Kerbal Space Program. MechJeb2 is a mod for the game Kerbal Space Program. Figure 11 - Satellite In Orbit. With Kerbin, a low orbit requires a craft to be traveling almost 2300m/s. Please help as when using the maneuver planner the same thing happens! Thanks, mbkgit It acts as both an excellent way of getting to know each feature of mechjeb and also encourages the player to at least understand basic orbit mechanics first. Nov 10, 2019 · I'm playing 1. Aug 30, 2015 · Mechjeb can't plan how your burn will affect your path relative to the Sun until you've left Kerbin's gravity. into orbit in a succession of Mercury spacecraft. Pretty much exactly what the title of this thread says, they're just not there At all. May 17, 2013 · Once you have rendezvoused with your target ship in orbit and are within docking range (either done by hand or done with Mechjeb) simply select your target docking port. Specifically, I want it for when I need my initial orbit to match the plane of another object, or to meet a satellite contract. Now here's the magic. Sep 17, 2017 · Trying to get a Shuttle Vehicle in orbit. No idea why Mechjeb cant do it properly as Ive never used Mechjeb. Mar 4, 2018 · That's an expensive orbit all right. Aug 16, 2012 · So, with the assistance of mechjeb, I finally managed to get a rocket to munar orbit and onto the surface. In fact, get yourself into orbit around an airless body, open it up and hit Land Somewhere, and you've got a pretty good chance of nailing your first Mun landing completely hands free. 30°), set the orbit inclination of the Ascent Guidance to the inclination of that orbit and let you show the navball ascent path guidance. MJ will get almost any simple, decently designed rocket to orbit. To slow down, raise your orbit. ) MechJeb's Maneuver Node Editor does make eyeballing it more accurate, and of course executing the nodes with Mechjeb improves accuracy and eliminates tedium, but I'd like even moar speed! For example, in placing a Mun satellite I came in with a larger orbit. 9. Don't, the game is much better without it! Use the ascent guidance. Apr 10, 2015 · This behaviour can be reproduced with the current versions of KSP (0. Dec 12, 2022 · The Argument of Periapsis is essentially the angle (from some fixed origin) to the periapsis of your orbit. I removed 2. Enter the earliest departure date to include in the plot. It turned out I had watched MechJeb do everything to many times that I picked it up super quick. Select maneuver planner from mechjebs dropdown menu, and then select the least delta v option and press create node. This was workable but not optimal since it would occasionally go out of contact with KSC. 33 and circularize. Aug 14, 2013 · So what had happened was. I think it's the best of both worlds and the evolution of any game that involves research and tech - the new tech should make the repetetive tasks simpler so you can focus on bigger SmartASS class MechJeb. Since all planets in Kerbal Space program orbit counterclockwise, the planetary prograde direction is also always counterclockwise. I just discovered MechJeb and am trying to learn how to auto-orbit around Kerbin. 5 percent and watching the orbital period time in MJ like a hawk. I get into space using Mechjeb to get into an orbit, but then I realize that it's not orbit I want. You can use mechjeb to create an encounter, or use a launch planning window to know the best time, but what I do here is use Olex' illustrated guide which tells me I need to get Jool about 95 degrees ahead of Kerbin. al. wikipedia. You have a ship with sufficient delta-V for the job in a 100km Kerbin orbit and it's a day or so before the launch window. GUI mode; doesn’t do anything except changing SmartASS GUI buttons to a specified mode. Mechjeb's Landing Guidance goes a long way here. Aug 5, 2018 · Also, I think they are measured from the orbit inclination not the heading - probably because your initial heading on the launchpad depends on which way you rotated things in the VAB. 0. Let launcher orbit once, and a few minutes before Ap, detach one satellite. Nov 16, 2014 · My suggestion? Just do it yourself until you know what mechjeb is doing. First off I’m running a pretty old version of KSP, 1. Dec 17, 2014 · First, I do an EVA at the space center and put down a flag. I was wondering two things about MechJeb 2. May 13, 2015 · Mechjeb (at least in my experience) always plots a direct intercept. Can anyone explain to me how to orbit the Mun with Mechjeb? I don't want to land on the Mun. Use MJ to enter resonant orbit of N-1 / N. Suggested mods to find include: MechJeb Embedded [2] . 5M subscribers in the KerbalSpaceProgram community. If you're looking for a *single* KSP2 mod that can do everything that MechJeb did (and still does!) in KSP1, well you'll need to keep looking. A resonant orbit is where the orbital periods can be reduced to an integer ratio, so their orbital periods don't have to match (but 1:1 is still an integer ratio). If your ship has low TWR, you want to park into an intermediate orbit at e. Nov 21, 2016 · I use smart A. Mechjeb will also say that you are already orbiting eve if you have a maneuver already planned out to get yourself there. Launch into orbit. Mar 13, 2017 · MechJeb hyperbolic orbit so i am using the mechjeb advanced planet transfer and it says " initial orbit can not be hyperbolic " . If you don't have enough SAS (or electricity) and MechJeb can't get the nose of the craft pointed at the node in time, then the behaviour you describe occurs Anatid Robotics and Multiversal Mechatronics proudly presents the first flight assistant autopilot: MechJeb. The Smart A. ) Launch to orbit. Sep 24, 2015 · Hi thereI have been looking through the tutorial threads without finding a clear answer to these questionsI am in sandbox, need to rescue 2 Kerbals adrift in orbit around K(1) How do I launch into angle of target without Mechjeb? I find Mechjeb makes my rocket tumble end over end. [MJ] circularize at periapsis Resonant Orbit Calculator For Kerbal Space Program . First launch into kerbin orbit with the craft youre taking to duna. What did I do wrong?Once in space, how do I use MechJeb autopilot to change orbits? Jun 13, 2016 · The effect of this is that your landed "orbit" is essentially constant being changed to a new "orbit" by the ground "pushing" you to keep you up at the same latitude. MechJeb I think has some features as well for launching into specific orbits. Using Mechjeb you have to wait until your satellite is above Kerbins equator and then push either "NML +" or "NML -" in the Smart A. 1 import krpc 2 3 conn = krpc. Basically, the point at which an inclined orbit crosses the equat Jan 20, 2015 · The MechJeb autopilot, when used with ascent guidance, seems to take me into random encounters with the Mun etc if I call for the altitude of orbit asked for (18,692,804 meters, or about 18,692 k(?)). Mar 2, 2024 · Hello all, I am playing Realism Overhaul KSP 1. Otherwise there's really no need. The final orbit needs to have a periapsis above 500km, so what I want to do is launch into a 200x500km orbit, and then perform a maneuver at apoapsis to get my final orbit. Id forget about mechjeb and focus on learning some basic orbital maneuvers first so you understand what it is mechjeb is trying to do. 180º is South, not horizontal - it's roughly what you'd aim at if you're heading into polar orbit (that or 0º) Another thing to keep an eye on is Ap altitude and time to Ap (in MechJeb's orbit window) - pushing the latter out so that there's enough time for your circularisation burn is a good thing to monitor. (I'm showing the more interesting ones only to save space). Once I got back up to a 5km circular orbit, I found that there was no way to get home save my (incredibly inept) manual piloting skills. Drag-less Ionic Jet with extendable fins, and intake, that can get into orbit six times without refueling! Getting into orbit, and landing twice with more than 70% fuel remain, presenting the DARK ARTS ORBITER. Then zoom out until you see both Kerbin and Duna and pull the prograde marker further, until your orbit almost touches dunas orbit. then ;like 5 seconds into the deorbit burn, Mechjeb just randomly started working again. Was somewhat surprised when I got Jeb into mun orbit for his first landing and saw that the McJeb landing guidance was available (and worked fine) even though I had not yet unlocked unmanned tech. I don't know if I'm just having a brain fart here, or not understanding the mod, or what. Because otherwise, just get a circular orbit at 35,786km above the equator and RCS to fine-tune your orbital period as described above -- you will need Kerbal Engineer, MechJeb, or other mod that shows you your orbital period. SmartASS . As someone said before, having MechJeb let's you focus on creativity and fun builds instead of functional builds that are focussed on getting to orbit. The dang thing won’t even get me into a proper orbit. Orbit Inclination - Наклонение целевой орбиты. If you plot the node without executing it, you can then adjust it accordingly before letting the autopilot perform the burn, but it sounds like you're already doing that. So, if two orbits have their periapsis on the opposite sides of the planet, then their arguments of periapsis would be 180 degrees apart. It is more fuel efficient, but the difference is so small that you shouldn't be afraid to use Mechjeb's one. There are a bunch of youtube tutorials about it, for example: Step 0: Design a craft and get it to low kerbin orbit. I installed mechjeb, to make the mundane task of launching into lower kerbin orbit less boring and more precise. Nov 8, 2013 · I clicked on the research group but I still don't have the Mechjeb tech: Click on the Tech Group icon, then go click on the individual mechjeb tech that appears in the right-hand window. I unlocked the Mechjeb part, but many of the options are greyed out in-flight: Feb 5, 2015 · what happens is, as soon as I go to launch i get that mechjeb window on the right of the screen, when I open it it gives me options like, custom window editor settings smart ass delta v stats orbit info surface info vessel info Getting to (and between and from) orbit is how you will come to understand the game, so ness with MechJeb some, then try to understand how to do what it does. S autopilot calculates its pitch, bank and roll according to the orbital flight path and will not follow the flight path marker on the artificial horizon but will instead calculate it's own flight path Nov 5, 2013 · OK, from the thread title I'm assuming you want to know how to use MechJeb to do this. org] work, which also explains why the transfer windows to Eve and Duna are the most infrequent ones, while the transfers to Moho/Eeloo/Any OPM world are quite frequent. I can get into Given the inputs for what your target orbit is, MechJeb calculates the required velocity/altitude/flight path angle/whatever else that puts you in that orbit at burnout. sce files) Zord's KSP Multi-calculator Lord_Zord Jan 9, 2025 · The sweet spot is somewhere between seeing a little bit of aerodynamic heating flames (good) and burning off the nose fairings (bad). Oct 6, 2012 · To catch up, lower your orbit. Once the satellites are in the right orbit, you can fine tune by thrust-limiting your engine down to 0. Here's the simplest way to match an orbit like that which isn't incredibly inefficient (although there certainly are more efficient ways): (1) Wait until the KSC is under your target orbit. Jul 26, 2018 · とりあえず本編ではその10までにKerbinからMinmus経由Mun往還ロケットを打ち上げるところまで行ったので、そろそろMODを入れたいと思う。 というわけで、まずは入れるMODを紹介することにする。 まずは既に導入済のMechJeb先 Feb 5, 2015 · I don't know how to use Mechjeb for this, but to fix it manually, place a maneuver node on to one of the points where your orbit intersects the intended orbit, and burn radially (and likely retrograde as well). May 16, 2013 · Solution: Re-create the windows using the Custom Window Editor, MechJeb 2 is still in a pre-release state so there may be the occasional bug. But fortunately, if you have mechjeb installed, it will automatically use it to circularize at your maximum altitude (apoapsis) after that. The problem is that it keeps launching so that my 500km apoapsis is above the north pole, instead of the south pole where it needs to be for the final orbit. I had my first solo Moho landing before I had my first Mun landing. connect (name = "Launch into orbit") 4 5 sc = conn. MechJeb will use this launch to measure the phase angle between launch and entering the desired orbit. Open MechJeb Maneuver Planner, select 'Bi-Impulsive Transfer to Target'. Mar 3, 2017 · You need to burn on or before that node to match inclination with that targeted orbit. " Do a normal launch (NOT a "launch to rendezvous"). But because of various inaccuracies, their orbits are a bit off from each other. Apr 26, 2021 · The other is can I use MechJeb to launch a space plane and get into orbit with mechJeb. So, I did my first orbit (in simulation) yesterday, using MechJeb PVG because I wanted to see how that worked. Enter the altitude of the orbit you wish to establish around your destination body. The reason the maneuver is 80 days away is because you have to wait for the planets to be in the proper position so that when you reach your solar apoapsis, Duna is right there to Sep 9, 2020 · I am trying to find information on using MechJeb's maneuver node editor to automatically start and stop my required burn using an existing Astrogator node. Or do what a lot if us did at the beginning: overpower a rocket and point is straight up until the apoapsis is above the atmosphere, then turn East and burn til you’re orbiting. Very simple. Dec 26, 2014 · Howdy,I have learned how to orbit Kerbin and have even made it to Minmus and the Mun and back. A short little guide on how to use mechjeb with SSTO Craft File: http://s000. Place a node at one of them and it should be fairly easy to match your orbit with the contract orbit. - Command MechJeb to circularize at the starting_apside, and execute. If someone with no knowledge of the game or physics trying to fly their first rocket is a 0-star pilot, and Scott Manley is a 5-star pilot, MechJeb is around a 2 or a 3 at best. ascent_autopilot 8 9 #All of these options will be filled directly into Ascent Guidance window and can be modified manually during flight. I check with Mechjeb. The best way to get into orbit then is by doing a gravity turn. Please help! Feb 27, 2016 · You'll note that when you take off with a autopilot pointing you at 180 or 0 degrees, in the map it'll still look like you're going diagonally - this is because at launch you're turning as fast as Kerbin is spinning - so you will get into a near polar orbit by the time you circularize - though it won't be coincident with the point at which you launched - this could be a probablem if you need The lowest delta v transfers will alter your orbit just enough to get you to your target, which will create a nice curve that barely touches the target's orbit. If you want the dev version of MechJeb then : open CKAN settings (Settings => CKAN Settings) press the New button select the MechJeb-dev line, click OK and exit the options. desired_inclination May 7, 2013 · With my shallow deorbits that would drive me face first into the hills west of KSC I tend to bring the plane down to 3km at the hills & attempt to get it subsonic, and then either check the ILS to see if I'm lined up or just click the autoland - which will put you in a nerve-wracking dive for the deck, possibly. If you engage autopilot, let's say in orbit for your comm satellite to reach a certain altitude ( ascent guidance I think it is called ) does mechjeb continue to autopilot your craft once you switch to another one or if you go back to KSC ? May 14, 2015 · There should be 2 lines cutting each other with the contract orbit and your orbit. Feb 5, 2017 · Not 100% sure this is the right place to post this, but I created a single-use widget for calculating resonant orbits to deploy satellites into a circular orbit at regular intervals along that orbit. I decided to make use of the MechJeb I’ve had for a while but never used, but I’m immediately running into problems. I was wondering if there's a way to make the node appear directly on your Ap rather than a certain amount of time away?Edit: Random questi If the transfer doesn't work, probably just do it yourself. If you don't like your orbit in stock KSP It's not like you have to waste a precious ignition from your engine and/or RCS fuel performing ullage. Switch to it, Use MJ to circularize at the upcoming Ap. (With Gravity Turn it's just click 'launch' really) Note to be careful that you do *not* launch to the same altitude of the station. It'd be a fair bit of work. 0 puts a node for you to circularize your orbit but it asks you how much time you want before you start you burn. My probes have about 1200, but every time I've tried, I run out shortly before the surface. 1) Get into a lower orbit and catch up with your target. My lack of piloting skills and knowledge of orbital physics isn't necessarily helping either. Then launch due Aug 14, 2012 · When you're already in orbit you have to do a plane-change maneuver. Target duna from the map view. Because it keeps changing the orbit, your relative inclination to the Mun would indeed always change in this case. e. This is just how synodic periods [en. 2. Open the target orbit info window in MechJeb, click the small "E"(dit) in the top left corner and add to this window "Target Time to AN" and "Target Time to DN" - this will show the time remaining until the Moon crosses the equatorial plane Select the Moon in Principia (Select target celestial from the main Principia window) Hello, Mechjeb makes my orbit all messed up when I launch, so one side of the orbit makes my ship start burning. So a ratio of 2:3 can be used to set up a 3-satellite network at 120 degrees to reach other in a single launch. Show Ascent Navball Guidance - Показать маркер на навигационной сфере. As you get closer, you need to reduce the altitude difference. I'm in orbit of Moho, and I've got a few small probes to land on the surface. Jan 3, 2015 · An orbit matching the planets equator and in the same direction the as the planets rotation your inclination in Zero deg. refresh select "Mechjeb2 - DEV RELEASE" in the list and then "Go to Change" to install Common problems. I try and change the orbit using the Mechjeb ascent autopilot and nothing happens. At this point, MechJeb points the nose of the craft at the maneuver node, then warps. I too kept running into the problem of it wanting to coast to circularization point, but that would make my speed decay wouldn't be going fast enough as I passed apoapsis and I'd descend back into the atmosphere. When I try to rendezvou with my Space Station, it doesn't do anything for a while and then makes the orbit so ill land back on Kerbin instead of heading to the ship. I have my unmanned probe and enable the Auto Ascent and set the orbit to 100 km (I've also tried 90 and 80). The quick fix is to just accelerate until you have an escape trajectory from Kerbin's SOI, and then use Mechjeb to get to the asteroid once you're out into a solar orbit. I wouldn't be surprised if Kerbal Engineer had that as well. At that distance, forget about orbits, and use RCS for the final approach. Jul 26, 2013 · select mun. May 20, 2021 · If you're using MechJeb, this should be a routine orbit adjustment. Jun 2, 2013 · Also more updates on Mechjeb to orbit stock front. that because in stock you orbit at 2200 m/s, you want to be horizontal at that speed. mech_jeb 7 ascent = mj. Then warp to SOI change, afterward you select circulate at next Pe. Apr 28, 2014 · So I went ahead and used Mechjeb to put me in a circularized orbit around Eve, this is where the issue started. The Ascending Node is the angle to the point where the orbit crosses the equator. Then one day I decided to do a new save without MechJeb. page Oct 2, 2015 · MechJeb probably won't perfect your orbit, as it is a computer. I've tried starting from a 20km or it and from a 10km orbit. Once in orbit, use the maneuver planner to get Ap = Pe. I built quite a Huge rocket - 2 Stages LqH/LqO - to set in orbit 400 kms my 225T charge. This mod is really better!(At least for me) -EDIT- I have one problem though. I tested in KSP SKY (5x rescale) and i set the desired apoapsis to 300km and it flies all well but it just stops when AP reaches 72km? Jul 13, 2016 · MechJeb is a mod. Thanks! Orbit Altitude - Высота целевой орбиты. Yes, there is a mod called MechJeb that can automate the process. g: 400-600 km. Please note that the Smart A. How to use the MechJeb autopilot mod to get into orbit. My ships kept exploding, crashing, and whatnot. Show ascent navball guidance - Создает маркер на навболе в соответствии с заданными настройками гравитационного маневра. Using the resonant orbit function of MechJeb I have managed to place 2 Relay Satellites on opposite sides in Polar orbit around the Mun. SmartASSInterfaceMode . 1 with RSS, Realism Overhaul, and RP-1 (the latter probably relevant only in that it's responsible for my rocket design). Orbit Inc - Наклон в градусах для конечной орбиты. May 13, 2012 · Unlike a purely vertical ascent (known as the 'Goddard problem'), finding the most efficient ascent-to-orbit profile is a difficult optimal control problem and unique to each design, although there is a Challenge now on the forums to get to 100km orbit with the least delta-v, and some players are doing better than MechJeb I believe (yay humans!). I tend to reduce the burn a bit to I get directly into low Mun orbit. Once you’ve achieved your final orbit, all that’s left is setting up the antennas. Jun 8, 2013 · During the ascent stage, Mechjeb creates a node and upon arrival, says its circularizing but doesn't increase the throttle. Jun 3, 2013 · With Mechjeb 2. To do this, open the MJ menu (it’s in the top-right of my screen; it may be elsewhere in yours, depending on your settings) and click on Maneuver Planner: That took months. I line up my view so that the camera is in the plane of the target orbit, i. Using stock Kerbal X i've run a series of 50 tests. ( I have no issues with vertical launch - that works great. tinyupload. Mar 28, 2025 · Please help expanding this page. 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. Generally speaking, you can do one of two things to rendezvous. Step 1: Get the Jool encounter. I believe you can also set the contract orbit as a target and have mechjeb match planes with it. Then I realize my longitude of ascending node is 180 degrees, when it is supposed to be 24. I run time acceleration until the KSC is just crossing the plane of the target orbit. I can't figure out how to circulize around the Mun instead of crashing into the Mun. =) May 9, 2013 · The best I've been able to do on my own was an orbit with an AP~2900km/PE~2600km/INC 0*. Switch back to launcher, goto 5, and repeat. target the docking port of Try launching into an east orbit then plane change into a polar orbit. desired_orbit_altitude = 100000 11 ascent. Feb 24, 2022 · Also, it wasn't clear at that time whether the OP was talking about inverting the direction of an existing orbit, or launching from the surface into an inclination of 180 degrees, i. [MJ (mechjeb)] hohmann transfer (create and execute). S to help with my launches because it can keep everything how I want it a lot easier and I have used it with this rocket/space-plane for several equal-lateral orbits just fine but when I try to use it to launch into a polar orbit I start adjusting the pitch in the mechjeb window but instead it pitiching front to back like I Oct 15, 2012 · As for the mechjeb part: - [No mechjeb] Escape Kerbin: Easiest way is probably just to go upwards with SAS on - [Mechjeb] Switch to the "Orbital Operations" tab, select "TRANS" and hit "Duna" - Wait - Watch rocket perform injection burn, changing stages manually if necessary - Mechjeb transfers to course correction - Wait Jan 11, 2017 · Started a new career today (while watching the Starship livestream IRL). Of course, nearly all of my builds failed and I couldn't get into a fantastic orbit. The orbital period is what makes a keosynchronous orbit work. space_center 6 mj = conn. 3. Just place a maneuver node on your orbit (equatorial and circular) and drag the prograde marker until it reaches the Mun's orbit. Apr 24, 2024 · Right now I'm trying to get a simple satellite to orbit around Earth. But if you'd like to pull together a sizable fraction of those capabilities and you're willing to split this across a few different mods, then *you're in luck!* **Flight Plan** brings you many of the features and capabilities you might remember from Oct 7, 2018 · I don't consider it cheating, as you mentioned after doing tons of supply launches etc (I play usually with the various colonization mods so I spend a ton of time launching and building large ships in orbit). Pull the prograde marker of the node until the projected orbit leaves Kerbin's SoI. It's one of the key parameters that define an elliptical orbit. Has anybody else had this issue or have an It does not matter if your orbit is perfectly circular; it does not matter if your orbit is perfectly uninclined. Each launch was up to 100x100 orbit, every test was ran without terminal velocity limit as Kerbal X is nicely designed around that already. Set Duna as your target. 8 and the same design flew perfectly to orbit (75km x 75km). Select the target on the map view. S. Use MJ to set apoapsis to 2 863. in the stock game, you generally want to turn very fast, starting already around 50 m/s, being down at a 45° angle already at 500 m/s. You can do an correction burn where you set closest distance to target in km if needed. console and burn until your inclination is at 90° (you can see your exact inclination in the orbital information window). module provides aids for vessel pitch control. How to use the MechJeb autopilot mod to orbit The Mun. it's really really easy to get into the routine of just letting MJ do your work for you. I'm now at May 14, 2024 · this, and that's why i said it can be a crutch or a tool depending on the player. Jun 22, 2017 · 2. 12. Everything I've found online says you need less than 900 m/s of Delta v to get to the surface from orbit. 1. Dec 23, 2016 · First I put the vessel in a CIRCULAR orbit around kerbin at 640km (for warping). Write down your exact final period for later use. com/index. I also, in a follow up post explained some ways of how to invert an orbit and what it actually takes. Help would be appreciated. The problem is, I generally have a stage separation during my circularization burn. Feb 3, 2021 · I was above 25 km as @dprostock said, but it still didn't work (I was in sandbox mode) So I gave up on mechjeb and left it on while I went for normal landing. 10 ascent. It add an autopilot that can (amongst other things) execute maneuver nodes for you at the right time, launch into orbit, keep you hovering at a desired altitude. I'm using MechJeb 2. Maybe Mechjeb doesn't like the Mun . Dec 11, 2014 · Every time i launch a craft now when i try to use advanced planet transfer it says intial orbit cant be hyperbolic and i make a orbit from 80x78 to about 604x602 and i keep adjusting my orbit any idea how to get rid out of a hyperbolic orbit? Jan 20, 2022 · Step 6: Plot two burns- one to set your inclination to zero and another to circularise immediately afterwards (if using MechJeb to plot the nodes, use the 'after a fixed time' option on the second burn and set the time to 0 seconds), then combine the two nodes using MechJeb's node editor (other mods are available, but I'm assuming you already Once arrived at the planet, capture into an elliptical orbit with the apoapsis at the edge of SOI, and use MechJeb to plan an inclination change to exactly 90 - it should make the node on the side of your orbit farthest from the planet, so this inclination change should also cost very little. I used it for a while but it takes A LOT of time to reach orbit. from the ground it's accent assistance. Then I turn flags on in the tracking center view, so I can easily locate the KSC. Apr 25, 2022 · Unfortunately I can't help you with the MechJeb questions, but LAN means Longitude of the Ascending Node. g. Orbit Altitude - Высота орбиты на которую должна выйти ракета. Keep tilting the craft more and more until it is almost horizontal around 50km. module is in need of more thorough documentation. I can share a link to a video demonstrating this. Starting from a 25km circular orbit, I opened up MechJeb, picked 'Enter Target Coordinates,' and input 0 Deg 42' 6" N, 22 Deg 44' 45" E. Typically I have to do a manual landing or two before I have enough science to unlock that tech node and thus McJeb's landing Sep 2, 2014 · Mechjeb's Rendezvous Autopilot isn't the best thing in the world. 90. The first step now is to determine the direction of planetary prograde and retrograde. " First the node planner issue a Warning "Initial Orbit can't be hyperbolic". e retrograde. I was trying to land at the Neil Armstrong memorial on the Mun. This would change my entire orbit. I've searched youtube but haven't found anything dealing with this specific MechJeb tool. ) Set up a maneuvernode in low kerbin orbit on the planets night side. May 13, 2013 · - Wait a full orbit of the satellite, and Kerbin should rotate to put our target_longitude right underneath. Best way to rendezvous using MechJeb2 is to use the Ascent Guidance to Launch to Rendezvous, then click the Autopilot button once you've attained a stable orbit. Sep 23, 2012 · Third: I assume here that the reader has a firm grasp of orbital maneuvers, including phase changes (adjusting the altitude of an orbit), plane/inclination changes, basic ship piloting, and perhaps even a cursory knowledge of what all the lovely buttons do in MechJeb. I engage au Oct 21, 2021 · mechjeb features need to be unlocked through the skill tree, ascent guidance is pretty early on the list. Nov 9, 2021 · The next thing to do is to transfer the orbit of the Snack Ship to be aligned (somewhat) with the orbit of the Target Ship. I think you're incorrect about synchronous orbit though. Going to the Mun is pretty simple anyway. If you're now in orbit for the first time (even just in a simulation), be sure to savor the moment. Calculate the resonant orbit needed for a carrier craft to inject craft it carries, like satellites, into equidistant positions of a shared circular orbit. . I've tried using MechJeb's Ascent Guidance set to 2868km but this ends up putting the module (If I recall correctly) 90* away from KSC. Once you get into orbit (probably nowhere near the target), restart the flight. )I understand the Autopilot where I set speed, feeding, ect, But I cannot fly with any kind of real control so It would be helpful to use some kind of Assent Guidance to get me into the air and then Apr 5, 2024 · De-orbit and Staged Ascent Simulators Shane Colton: Calculate a de-orbit maneuver to land on a specific part of a celestial object - Evaluate whether a staged craft can reach orbit 22 Dec 2013 0. 0 many of my rocket designs fail to achieve as accurate of an orbit during the circularization burn - typically with greater than 5 or 10km differences in Periapsis and Apoapsis (normally 70km x 80km or so if trying to reach 75km x 75km). 2): Bring a vehicel into an inclined orbit (e. May 2, 2019 · MechJeb is an autopilot plugin that allows you get into orbit, and go to the Mun in the fastest and most efficient way possible. Once you've figured out a launch profile that works, go back into the VAB. Trying to let Mechjeb to auto ascend OR circularize the orbit is a nightmare. May 12, 2013 · I was testing out the option where mechjeb 2. Apr 3, 2024 · MechJebはターゲットを指定しながら軌道変更中に軌道が他の天体（Munとか）の影響圏に入るとバグる -- 2017-06-19 (月) 21:41:33 解決法としてはマニューバ作った後はNo Targetに戻してから実行すると大丈夫 -- 2017-06-19 (月) 21:42:25 Quick question about MechJeb. Probably my biggest use of the mod, or at least it was, years and years ago, back when it was mechjeb 1. May 22, 2013 · Enter the altitude of the target into "Orbit altitude. But yeah, 0° in the first box will make east the pitch down direction (but only if the orbit inclination is also 0°). Then launch. Nov 1, 2015 · I use mechjeb going from low kerbin orbit to Mun, First you mark Mun as target then select an Hohmann transfer to target. This is done with various orbital mechanics principles, depending on what exactly your target orbit is. When I entered 100k Mechjeb say'd that this was impossible below 2000k. if you want all of mechjebs features unlocked at the start you need to install a secondary mod alongside mechjeb. 5 degrees. HOWEVER, that doesn't guarantee it will ever hit zero. 705) and MechJeb (2. the orbit just looks like a straight line. If you just want a specific orbit, you can use the debug menu (alt+F12) and set up the orbit. MechJeb won't really help here, it'll do your burns more precisely but you still have to plan them. Click enable autopilot. Docking autopilot is another thing, it's horribly inaccurate from my experience. Now, I use MechJeb to plan an Advanced Transfert to another planet: Select Duna as a target; Open MechJeb and choose "advanced transfert. yjocxu pqxljfyn mgfoc qrvty bqvlq ndnue loevz dlqdyo ksich ype