ksp how to make a stable plane

We're also not discussing helicopters here, because stock kerbals have not invented the propeller, and stock propellers are a whole big topic of their own. What version is the Kerbal Space Program demo? rev2023.5.1.43405. In principle it's simple just place your fuel symmetrically around the dry CoM, and centre your vertical thrust vector on it but how? If the CoM is in the back, then it will ALWAYS not be able to get out of a stall, flatspin all the time, and will be an all around horrible plane. what do you mean by "wheels are mounted with angle snapping"? I didn't try for 20000m as it probably wouldn't do well. Cookie Notice They both create a dihedral effect, tending to return you to level through a roll-sideslip interaction. These tend to handle best. - but they were talking about having two intakes/engine. You are simply running out of atmosphere (i.e. The CoL should be behind the CoM on a horizontal angle, unless you're building a shuttle. Now for wings, the "Wing Connector Type B" is the largest you have so far; connect a set of those where the centre of mass is. The CoG shouldn't be TOO far in front of the CoL, though. Most of my planes I'm able to knock each of them down to 40% and still perform 7-8G maneuvers. Wheels need to be touching the ground exactly as they were intended to, you cannot angle them in any direction other then their intended direction when placing them. Start with simplest, easiest planes you can and then increase complexity observing and mitigating problems as they arise. I have some really good tips and tricks to add to your tutorial,but Im on my phone at the moment. Firstly you're going to want to make a short fuselage. Your very own tutorial.). That is really weird. and our Archived post. Any plane needs speed - so you need thrust (usually). You need enough intakes to keep them fed. When you're close to it, INCREASE THROTTLE until your rate of descent nears zero. A bigger twin-boom design using two arrays of 18 Junos on each boom and a single array of 9 on the nose. Hint:The engine pre-cooler and engine nacelle are fantastic air intakes, and they can be mounted in-line or combined with other elements. I'm going to strongly suggest using the angle set to 90 degrees + symmetry mode to place landing gears. Center of Mass - The average of all weight on the plane, this tool will show where gravity will pull . 2023 Take-Two Interactive Software, Inc. If that all fails, you may try building your plane lighter and with mightier (or just more) engines, so it just doesn't have the time to start misbehaving on the runway before you bring it up in the air. Smaller wings on the cockpit can be good. The cargo is near the centre of mass, but because it can shift, it's important to adjust the exact balance by tuning the power on the nose hoverjet At its core, a VTOL aircraft is a plain old aircraft, with downward-pointing jets that produce a TWR of > 1.0 with the vector centred on the craft's centre of mass, and some way of controlling its attitude when it is hovering, because control surfaces do nothing at an airspeed of zero. Note: Your post will require moderator approval before it will be visible. And one other, more remote possibility to check: Where is your plane's center of drag? While I couldn't accept this one because ultimately it was changing wheel positioning that increased stability enough to elegantly take off, I don't think it's unreasonable to imagine that the oscillations originated or were exacerbated through asymmetric thrust. A Mk1 Cockpit, two Mk 1 Liquid Fuel Tanks, and then cap the back with a round nose cone (use the A/D keys to rotate it as necessary). principle. Can you check what happens if you swap in larger gear? You want those tires facing straight to the ground! SAS sees this and turns the other way, which just causes the same problem in the other direction. Take the large delta wings and place them on the aircraft. This should reduce ground control authority and make oscillations less powerful. Kerbin has some biomes that are difficult to reach any other way. So you want to make a plane but all your contraptions explode on the runway, crash into the runway a few seconds after taking off, crash into the side of the runway, crash into the ocean after doing a tight turn or otherwise fail to do what you intended? Pasted as rich text. Terriers will also work on Duna. instead i atach the fuel tanks as radial fuel tanks, or underwing droptanks, so i can slide them on the hull. I've always found that best way to not crash on the take off is to take off. Sorry if this is just too basic, it is kind of for beginners, edit: [snipped the stupid thought] i need to stop trying to post when dead tired, I like rules of thumb like these All the info you need without getting bogged down with specifics, Just a quick FYI, you say that CoL is center of thrust and CoT is center of lift; these are the wrong way around. Wings have been flown both with and without struts, Wheel friction was even decreased to 0.3 for front wheel and increased to 2.0 for rear wheels, as per a tip found online. My Hats off to Brikoleur, as a fellow VTOL/general spaceplane [stock] enthusiast, your tips were easy to read and right on the money! You do need rather a lot of them. As such, you will need various control surfaces. In addition to the tips others have suggested, try locking steering on all your wheels. ps. The BAK Karmilla. They'll still happen but you'll have more time to get off the ground. For your first flight, it may be easiest to ignore yaw altogether and just maneuver by rolling slightly and pitching. Somebody figured out how to make a stable orbit inside of the atmosphere Scan this QR code to download the app now. Sparks will fit in Mk 1 utility bays, the bigger ones will fit in the bigger cargo bays (Mk 2, 2.5m utility bay, Mk 3). LTTP but anyway: the question is, practical for what? Set the thrust limiter on your main engines to zero. That should just about do it for basic planes. Thanks for any answers! All you need to do is add landing gear (one right before the cockpit, and two on the tips or middle of the wings), and you're done! and i usually find having my dampening a little lower then the spring strength keeps the wheels from "biting". One point I would mention is that the more wing area you have relative to your control surfaces, the less angle of attack you can generate. Otherwise, you can either shift your wings till it's right (though this may crowd them near the back), or you can very slightly rotate the big wings so they're slightly higher near the front of the plane. TO achieve the easisest way to balance the fuel tanks i never put usable fuel tank in where i cant move ti easily eg. 2023 Take-Two Interactive Software, Inc. You're one of the few I've read that recognized the potential of Junos in vtol vs the more popular panthers or using rotating clamp-o-tron assemblies- bigger engines have the huge design downside of shifting COM above fuselage longitudinal axis, which makes rocket placement difficult for SSTOs. Next question? on the same axis as engines. @TheEnvironmentalist There is one more method I'm sure would work in your case, although I didn't write about it because I think it's cheesy and wouldn't solve the root problem. It is certainly possible to make VTOLs that can circumnavigate the planet. And there's the ever awesome 101 from @keptin. Otherwise tune the suspension to keep takeoff and landing stable. I've never found them to be practical (at least on Kerbin) for anything except short flights around the KSC and flying to the island runway and back. The Kerbal Space Program subreddit. You can park a ship into an elliptical . If you (or SAS) turns even just a little, the engine opposite your turn will have a higher velocity than the one towards your turn. It only takes a minute to sign up. (if the front gear is the same ditance from the CoM as the 2 rear gears. Which was the first Sci-Fi story to predict obnoxious "robo calls"? They sometimes coincide with elevators. Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI, Screenshot of the Week #89 [Submissions Closed, Vote Now!]. Hit the launch button and watch your magnificent bird fly! If additionally you can give it a controlled tilt and hold it there, then it'll start accelerating in that direction, like a helicopter. As with everything in KSP, experiment, experiment, experiment. Why did DOS-based Windows require HIMEM.SYS to boot? Also, layout matters: aircraft with a wing that runs along the length of the craft, but with a narrow wingspan (like the Mk2 fuselages or wing strakes, and to a lesser extend swept or delta wings) will take more effort to pitch over but will roll very, very easily. NEVER go forwards, causing the aircraft to crash itself. Hovering is expensive but you don't really need all that many seconds of hover either for take-off or for landing. and adust the springs according to how much weight thier carrying. This can be most helpful when transitioning to or from level flight. 2023 Take-Two Interactive Software, Inc. Also: high proportion of lifting surfaces to non-lifting surfaces. Yes! The CoT (Center of Thrust) is purple. RCS will get the job done nicely, and looks cool to boot. Here is your convenient solution to this problem! Kerbal Space Program, how do you disable autosave? Now, get a pair of winglets, and place them at the front of the plane to get that approximate spacing of COM . So basic, anyone can do it. [1] At this speed it is possible to circumnavigate Kerbin in about 29 minutes at an altitude of 40 km. You may need to change control authority to a negative value if they bend "the wrong way". Then you want to put something called a "Small Circular Intake" on the front of the tank, and a "J-20 Juno" engine on the back of the tank. Also: high proportion of lifting surfaces to non-lifting surfaces. 2. The best answers are voted up and rise to the top, Not the answer you're looking for? Learn more about Stack Overflow the company, and our products. if that does not work, lower the spring strength until it works properly. There's no tutorial in KSP that explains plane design to you and this guide could have taken the lead on that. I had my rear wheels mounted on the tail, and it seems the taper of the tail messed up the angle of the wheels creating instability. You should talk about the rocket engine's dV (approx., since not all users use Mechjeb or any other mod capable of showing dV for a given engine and tank). This tutorial was created primarily based on a Reddit post by the incredibly helpful u/AnArgonianSpellsword. Additionally if you have any off-center fuel tanks, double check the fuel is drawn from both at the same rate (same priority). Enable mirror symmetry to save yourself some alignment effort. Remember the, fuel flows from the front in KSP, so you might want to start off with the CoM in front of the CoL. For the vertical engines, do you also need to have some verticalintakes? (as in, like 45 degrees) usually resulting in the plane exploding. Plane veering off course is not uncommon but uneven fuel draw can exacerbate it a lot. the front should be close to double the rear gears strength) And Good Guide! Move them back and fill them with fuel or weigh them down with control surfaces. Keep pitching up as you approach stall speed. I used the angle snapping feature (to the right of the symmetry selector in the bottom left hand corner of the screen in the space plane hangar view) to mount the steerable wheel perpendicular to the ground, and the two fixed wheels symmetrically such that zoomed in, the wheels themselves are perpendicular, though the fixed wheel part itself comes with something like a 45 degree angle between the wheel and the shaft that attaches it to the craft, so the shafts naturally sit at something like a 45 degree angle out to either side so the wheels can sit perpendicular. It can be as crazy or as normal as you want, just remember these basic tips, 1. Air-breathing hoverjetsneedintakes. For comparison the speed of a stable Low Kerbin Orbit at 70 km (outside the atmosphere . Love it!! "Type E" is the smallest you should have, and you want a set of those connected at the back of the fuselage. Here's how you go about building a VTOL under these constraints. Flying planes will be much simpler, with much reduced cross-control issues. Your, Add enough downward-pointing jets to lift the plane, as symmetrically as you can around the, Adjust the thrust limiter on the fore (or aft) hoverjets until the thrust vector lines up with the. A twin-pod design is similar to a twin-boom, except that it has a conventional tail extending from the fuselage. Now, imagine it forward, it will stall like a REAL plane and will go forward, Front is on the left, and back is on the right. I wrote a post that covers similar topics. Another possibility to add to the existing answers (it's a bit hard to diagnose without seeing the plane) is that your landing gear might be insufficient for your plane's mass. November 1, 2018 in KSP1 Tutorials. Clear editor. We look at the principles behind designing a basic jet. There are multiple ways to place them: Ailerons control the roll of the aircraft, and are (almost) always placed on the wings, as far out as possible and as centered (compared to the center of mass) as could be. First off, make sure you are using the newest version of Kerbal Space Program, and it is NOT pirated, when you buy it, the devs get helped out. Before you can make a successful plane, you must understand what makes a plane go in places other than the ground - the wings. i dont know what kind of range youre looking for but i would make a significantly smaller plane. Now put on center of mass and center of lift view, and move the delta wings until the center of lift is slightly behind of the center of mass - not in front, otherwise your aircraft will be able to easily flip out of control. Check out Mike from Merrimack, New Hampshire as he explains to filmmaker Rod Webber what' Try not to make your first airplanes longer than 3 MK1 fuselages. Please consider starting a new thread rather than reviving this one. You cannot paste images directly. @italian man Great guide, and for people who would like to know the basics of plane building i will be pointing them here. Which reverse polarity protection is better and why? If I'm running something with a long delta-wing layout, I'll then use canards and have the dynamic instability to allow for manouvering; if it's something without a lot of pitch inertia, I'll go tail stabilizer. For all your gaming related, space exploration needs. The ones that are at an angle must be placed at that exact angle, you can't angle them to make them wider. Can't remember where I saw/read about it - Scott Manley maybe? Here's how you go about building a VTOL under these constraints. This item will only be visible to you, admins, and anyone marked as a creator. KSP should be handing out engineering degrees :). You too!Like - Subscribe - Check out my other tutorials. @TheEnvironmentalist No clue, but it doesn't need to be much because it's a feedback loop. Always look at your aircraft from a 90* angle on the side. The CoL (Center of Lift) is a blue ball. Your choice of RCS jet is the Place-Anywhere or the Vernor. The CoL should be in the center or just behind the CoM. Valentina would really appreciate if I could get my airplane off the ground, but it keeps exploding on the runway by the exact same failure mode: The plane veers to one side or another, either I or SAS correct it, which starts a left/right wobble, which builds until one of the wings hits pavement, at which point the craft quickly brings Valentina to her untimely end. Also, excessive use of the rudder usually causes the plane to spin out of control and crash. Thank you and happy landings. But be careful and don't crash it! These should be in the bottom left next to the display of the cost of the aircraft. Mach speed - 343 mps. I've spent some time scouring the internet for ways of solving this problem, and found a number of pieces of advice on preventing wobble and improving planes in general, some of which made it into the above list, but Valentina's still dying, and I'm tired of Kerbal funerals. In fact, nothing will happen at all, and that's probably bad, so put an air intake on your plane anyway. 2023 Take-Two Interactive Software, Inc. The more intakes added, the higher a plane can go before a flame-out, which makes multiple intakes a must on SSTO spaceplanes. I haven't found a sure-fire solution to this, but I think I know what causes it. You want to start by attaching a Mk 0 Liquid Fuel Tank under the wings, making sure you're mirrored so it goes under both wings. You can either go with four "LY-O1 Fixed" or a tricycle of two LY-01 near the back and one "LY-05 Steerable" at the front; either is fine for now. When your airspeed is near zero and you're above your landing spot, reduce throttle until you start descending. I've had a lot of people comment that their planes veer off the runway or flip around madly even though they think they got everything right. This reduces the amount of trim you need to apply to get the craft level in flight. Similar to the fuel pump mods out there now. I was hoping that the new intakes would give it the added altitude. - SF. And above all: have fun! How to force Unity Editor/TestRunner to run at full speed when in background? Then at the top, we'll put one tail fin, centred on the end of the fuselage. I might try to write a more advanced guide for spaceplane construction. Eventually you either crash, or you reach a high enough speed that SAS wiggling can't cause a significant enough difference in engine speeds. In vanilla KSP, wings have a predefined lift factor. This one is balanced with reaction wheels. The gear of the craft can also easily be overlooked, but can make the difference between flying masterpiece and soon-to-be-scraps. Before building planes though, there are some inportant things to know. (Yes, you personally, you lucky thing! Your link has been automatically embedded. They can be placed on wings. How to keep an airplane stable on the runway in Kerbal Space Program? Always look at your aircraft from a 90* angle on the side. Getting a plane of the round isn't that hard. It also depends on whether you're using FAR or another aerodynamic rewrite mod that would change the way your aircraft behave. Powered by Invision Community. Powered by Invision Community. 2. Why don't we use the 7805 for car phone chargers? Embedded hyperlinks in a thesis or research paper. Also hopefully you're not using any mods that use throttle (Throttle Controlled Avionics etc) as with engines as sluggish to react as jet, this is bound to cause trouble. I would really suggest this guide for beginners trying to get into the world of planes in Kerbal Space Program. Standard KSP airplane-stability request: post a screenshot of your airplane in the SPH, with the center-of-mass, center-of-lift, and center-of thrust markers shown. Guest, I have made a couple VTOLs in the pastand had a lot of fun with both the engineering and flight challenges. You need about 150 m/s for the landing, less than that for take-off. The same applies to Laythe, although it has gentler topography. After the drag was sorted out, it wasn't very hard to create a dockable SSTO version. one last thing to verify: look from the side, observe where your center of mass is, then how the control surfaces are located relative to it and if the way they react to your controls makes sense (just try to pull up, down, or roll, on the runway without even starting the engine or disengaging brakes and watch which way the control surfaces move).
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