That SAS can hold a craft stable doesn't mean it's a stable craft. KSP should be handing out engineering degrees :). Larger ones have additional wing-mounted pods. Powered by Invision Community. Your plane is almost finished. 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. Then: I hope you've found this short tutorial useful. The most helpful thing to do would probably be to make a craft and share it so things you're doing wrong can easily be pointed out for you to fix. Interesting design!! Privacy Policy. Throttle up to full, activate SAS, stage to start the engine (you'll only have one stage here), and start rolling (or sliding) down the runway! Build yourself a plane. 4. That would oscillate slowly between 16000m and 17000m but was otherwise fully controllable. https://wiki.kerbalspaceprogram.com/index.php?title=Tutorial:_Basic_Plane_Design&oldid=97453, In the front of the plane - In this position, the control surfaces are also known as , In the back of the plane, on the tail - The most usual position; usually, close to the rudder. On 11/1/2018 at 10:54 AM, Brikoleur said: On 1/25/2019 at 4:03 AM, panzerknack said: This thread is quite old. It's unlikely you're doing this but just in case: while on the ground use only yaw controls to change direction, don't touch the roll controls. Enable mirror symmetry to save yourself some alignment effort. For most small-to-normal-sized craft, you should end up with CoL sitting right at the back of the yellow CoM ball. Which reverse polarity protection is better and why? Good, strong control authority - instead of reducing the pitch control authority, make the plane aerodynamically stable, so that even if you do flip it, it will right itself. Your choice of RCS jet is the Place-Anywhere or the Vernor. As you reach 100m/s, hold S to pull the stick back, and you should be in the air! You can park a ship into an elliptical . I have also used rocket-powered VTOLs on Duna. 2. You can horse hundreds of tonnes, up and down both, with the standard canard pieces. When braking most of the power should be on the rear, or you may see Kerbin up close. do you put them vertically or are they at an angle to the ground? You cannot paste images directly. and our Right click on the control surfaces and knock down the control authority of each item. Finally you need to make sure it's all balanced, this means the centre of lift marker needs to be very slightly behind the centre of mass marker. Level:Intermediate/Advanced:You need to be able to slap together a plane that flies reasonably well before attempting a VTOL.Background reading:Start with the fantastic Basic Aircraft Design tutorial in this very forum.Craft used to illustrate this tutorial: VTOL stands for "Vertical Take-Off and Landing." hope you and others find that useful in the future! So the ones that go straight up and down can only be straight up and down, no angling left, right, backwards or forwards such as when you place the little wheel on the angled body of the cockpit part. Note: Your post will require moderator approval before it will be visible. The CoL (Center of Lift) is a blue ball. For all your gaming related, space exploration needs. Thank you and happy landings. the vertical stabilizer only handles yaw? Then I'd go with moving it towards more maneuvrable by moving CoL towards CoM. That should just about do it for basic planes. User without create permission can create a custom object from Managed package using Custom Rest API. If you placed the main wings at the centre of mass and then added the smaller wings behind, this should be correct already. More air is better. I wrote a post that covers similar topics. Also, I would like to know how I can tweak my aircraft to make them smooth at the controls. The Kerbal Space Program subreddit. Also there it's important to place small landing gear after setting up CoL to CoM relation since it's mass is calculated in CoM in SPH/VAB but not counted in flight. Making a fuselage. (if the front gear is the same ditance from the CoM as the 2 rear gears. What i do when i build a plane (except the tings others allready mentioned) is playing a lot with the Fuel sliders on fuel tanks in SPH and then moving the tanks and adding removing "balance mass" to the plane untill the COM doesnt move at all relatively to COL, no matter how much fuel i have with tanks. And there's the ever awesome 101 from @keptin. Center of Mass - The average of all weight on the plane, this tool will show where gravity will pull . She has a horrible turn rate and oscillates a couple of thousand meters at cruise, but it's flyable. The CoM (Center of Mass) is a yellow ball on your spacecraft when you enable it in the SPH. Now I'll walk you through a basic aircraft; fancy stuff like science equipment can be added later. By All trademarks are property of their respective owners in the US and other countries. Good, strong control authority - instead of reducing the pitch control authority, make the plane aerodynamically stable, so that even if you do flip it, it will right itself. Just like with rockets, get some courageous Kerbal in the cockpit and let's get started! You may be correct and that 3 engine plane is a lemon. To fly a VTOL craft, you need to be able to perform the following actions, which must be bound to a an action group: If you have full RCS control, you will additionally need control for that, and if your hoverjets are inside pods, you will want a control for toggling them too. Pasted as rich text. We still don't know what his craft even looks like yet For all we know it could be a single SRB with canards at the front. The BAK Cyclone hard at work on Duna. And you would need to stay hours spectating the ship, because the game doesn't simulate atmospheric drag otherwise. The CoL should be in the center or just behind the CoM. For what it's worth - watching 1.2 pre-release streams, the upcoming changes to SAS are profound. Build yourself a plane. Part of the reason I like the standard canards so much, though, is because they're an all-moving surface, which means you get the maximum possible profile changes with your commands. Yes, although they have only been flown with nearly full tanks. A twin-pod design is similar to a twin-boom, except that it has a conventional tail extending from the fuselage. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Best way to get down into thicker air and land is to perform what dogfighters called a 'Split-S'. Thanks for any answers! The BAK Cyclone, delivering a station module to Duna. Unfortunately, with only these basic parts, landing on the runway won't be easy; a viable alternative is to throttle down to nothing, then belly-flop in the ocean. Mount your rear wheels out on the wings for better stability. Nah, the stabilizer will do it. Regular HTOL aircraft can afford to be a bit sloppy with this because aerodynamic forces will effectively obliterate moderate shifts in CoM -- if your plane gets a bit more tail-happy as the tanks drain it's no problem, as long as your CoM stays ahead of your CoL. Mostly anyway. 3. 2023 Take-Two Interactive Software, Inc. The CoT (Center of Thrust) is purple. The ones that are at an angle must be placed at that exact angle, you can't angle them to make them wider. Also: high proportion of lifting surfaces to non-lifting surfaces. I was a diehard rocketer (5k hours or so) until a month ago and then suddenly got the spaceplane bug, I can now see why some people (*cough*Val*cough*) come out with dozens of designs: it's neat when it works so well. No, the intakes don't have to be vertical. Then go into the move part thing with the "2" key in the editor, remove the degree setting, and then drag them apart manually and position parts with fine tuning that way. One challenge I've run into for myself with more elegant VTOL SSTOs is low-speed-hover controllability; beyond using brute-force RCS or SAS. In other words classic tripod. After the drag was sorted out, it wasn't very hard to create a dockable SSTO version. If the fuel flows from the. Nothing bad will happen. Aim to get your speed below 50m/s, and have plenty of water ahead of you; keep the plane level, and pitch up to shed velocity. Imagine that first plane but with the bubble cockpit and the old style round intakes. May 19, 2013 in KSP1 Tutorials. CoL (Blue ball) position relative to CoM (Yellow ball) is very important. By Keeping it from crashing is usually the hard part. there aren't any aerodynamics when you are a kraken scientist like me. Another pointer is to make your wings larger with the same amount of control surface. Privacy Policy. I've been having some trouble lately in newer with respect to air flow. what do you mean by "wheels are mounted with angle snapping"? Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. It flames out at 25,000. Adding a vertical intake helps. 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. They optimize use of oxidizer in SSTOs. Firstly you're going to want to make a short fuselage. and adust the springs according to how much weight thier carrying. Just sounds like the engines can't get enough air, in KSP high speed also generates air intake so I'm guessing what is happening is that you have the initial speed to get to altitude but the lack of air at altitude is starving the engine resulting in lower speed which further reduces air intake and it cascades until either the engine shuts down or you return to denser atmosphere at a lower altitude. New comments cannot be posted and votes cannot be cast. When your airspeed is near zero and you're above your landing spot, reduce throttle until you start descending. I didn't try for 20000m as it probably wouldn't do well. Yes! All rights reserved. Your link has been automatically embedded. Kerbin has some biomes that are difficult to reach any other way. Getting all of this into one craft is a pretty intricate business, however. Lift, the canard button), and finally CoT (Center of Thrust, the thruster button) 2. I would really suggest this guide for beginners trying to get into the world of planes in Kerbal Space Program. I haven't encountered oscillations like that in an airplane but I have encountered them aplenty in case of lightweight probes that have too strong control authority - too good RCS or reaction wheels, so I suspect the source here is the same. What are the arguments for/against anonymous authorship of the Gospels. As with everything in KSP, experiment, experiment, experiment. This guide will show how to make simple-ish planes and other aerodynamic tips. Why did DOS-based Windows require HIMEM.SYS to boot? To land a VTOL aircraft, approach the landing zone as you would with a regular HTOL craft, until on final approach. 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! You may need to change control authority to a negative value if they bend "the wrong way". The absurdly big wing and control surfaces make it highly economical for high-altitude supercruising. Please help, This is an okay guide but it does not go into the nuts and bolts of the deal.like what exactly do all of these wing parts do? 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. Light craft have a single engine at the rear of the fuselage. Stunt planes tend to go for the latter layout and use powerful ailerons, because getting more roll authority is easier than getting more pitch and causes much fewer knock-on effects. All three wheels (one steerable in front, two fixed in back) are mounted with angle snapping, symmetrically, Wheels are mounted to the fuselage, rather than to the wings (which flex under load), Center of lift is behind center of mass, and slightly raised, Rear wheels are in front of tail, but not enough to make tail strikes easy. To do this, take a few barrels of your jet fuel, stick them on the back of your aircraft. What Trump's very stable geniuses lack in intelligence they more than make up for in confidence. 2) Then add the pitch control surfaces. 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. Set the thrust limiter on your main engines to zero. We look at the principles behind designing a basic jet. 100% is fine for doing a pure Pilot Assisted flight but for keyboard piloting it's too much. Remembering the FW TA152 and the U2 I put long wings on it and while its turn rate makes an airliner look like a fighter plane it is stable enough at 19000m. (KSP 1.9.1) Subscribe - http://www.youtube.com/c/MikeAben?sub-confirmation=1 Patreon - https://www.patreon.com/MikeAbenPatreon supporters receive early, ad-free, access to videos, kOS and craft files, and more. Absolute Beginner's Playlist - https://www.youtube.com/playlist?list=PLB3Ia8aQsDKgGHrNZnz2ca8NVuyj7eHXc Craft File - https://drive.google.com/file/d/1cfFBMm4EBhDh8mQ2UuOn9f5DL6jBgM05/view?usp=drivesdk0:00 - Introduction1:42 - Planning our Science Collection3:36 - Starting our Build4:49 - Changing Symmetry Mode6:40 - Adding Fuel8:07 - Adding Jet Engines \u0026 Air Intakes9:10 - Adding Wings \u0026 Elevons10:55 - Adding a Tail12:03 - Understanding Center of Lift16:24 - Understanding Control Surfaces18:31 - Adding Landing Gear22:25 - Summary You should be able to navigate fairly readily, and with the superb efficiency of jet engines, you should have plenty of fuel to go anywhere you need to go. instead i atach the fuel tanks as radial fuel tanks, or underwing droptanks, so i can slide them on the hull. Not so with VTOLs: if the CoM shifts, you're not going to be able to land vertically anymore. If the fuel flows from the. Upload or insert images from URL. Finally, it is really difficult to land a HTOL atmospheric craft on Duna because of the thin air: you'll be going really fast and terrain is really bumpy, so there's a huge risk of ending up as a big ball of fire, whereas it's very hard to land a conventional rocket lander precisely,like when you're aiming for your surface base. If you have more than one engine, you can get asymmetric thrust at low speeds. Ill link it if interested. Intriguingly, there is one thing I've found that does prevent the wobble from starting, and that is to use a single engine mounted directly on the back of the fuselage, which prevents using a tail and is ultimately a fairly significant restriction to build around. I've covered all my bases, as far as I can tell: It seems if I turn off SAS, I can prevent the oscillation from starting as it's initiated by some control input, whether from me or SAS, but then the plane veers off the runway until it hits something. This can be most helpful when transitioning to or from level flight. Whiplash is the engine you would want to use on a plane meant to go 20km. Have you set your control surfaces to only respond to appropriate controls? But they are tons of fun both to design and to fly, which for me is kind of the point of KSP. If you're going for full VTOL you need to have a TWR > 1.0 at take-off weight; adding more vertical engines will make vertical landings easier and (if they're air-breathers) will make it possible to operate at higher elevations. The same applies to Laythe, although it has gentler topography. 2023 Take-Two Interactive Software, Inc. that being said, one thing I noticed is that you said the whiplash is for SSTOs, this isn't true, it's used for high speed atmospheric flight, it doesn't have a closed cycle mode, so it can't be used to complete an orbital trajectory. I'm going to strongly suggest using the angle set to 90 degrees + symmetry mode to place landing gears. They both create a dihedral effect, tending to return you to level through a roll-sideslip interaction. This thread is quite old. You should have something called an "Elevon 1"; this will be the moving part for your wings. Check out Mike from Merrimack, New Hampshire as he explains to filmmaker Rod Webber what' Otherwise tune the suspension to keep takeoff and landing stable. Then at the top, we'll put one tail fin, centred on the end of the fuselage. Their hoverjets just have a TWR of less than 1.0. Because they're fun and educational and you can. 3. An aircraft without control surfaces is like a rocket without RCS or reaction wheels - it will hardly turn and will be equally hard to control (perhaps even impossible!). You arent doing anything wrong. You can "smooth" controls by toggling capslock on your keyboard, the control indicators in the bottom left will turn blue from orange and they are instance dependant (if you revert your flight you'll have to toggle capslock again). Now to try it on one of those high altitude missions. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. It is entirely powered by Terriers. Go on, and take the plane capsule which looks like a converted fuel storage device. (KSP 1.9.1) Subscribe - http://www.youtube.com/c/MikeAben?sub-confirmation=1 Patreon - https://. This reduces the amount of trim you need to apply to get the craft level in flight. The downside is that it isn't as pretty, but it *does* top out at mach 1.8 with a humble wheesly. I also had problems with a high altitude plane until I decided to follow the K.I.S.S. Go ahead and make a new save file or use an old one, it doesn't matter! Here's how you go about building a VTOL under these constraints. So basic, anyone can do it. I haven't found a sure-fire solution to this, but I think I know what causes it. My question is really about controllability. jet engine efficiency in this game is based on built in thrust curves. Except for the parts regarding drag and number of intakes, everything else is still very valid. 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. Clear editor. Similar to the fuel pump mods out there now. @italian man Great guide, and for people who would like to know the basics of plane building i will be pointing them here. and i usually find having my dampening a little lower then the spring strength keeps the wheels from "biting". 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. Usually, having one or two medium-sized intakes will more than suffice on a regular plane. Two MacBook Pro with same model number (A1286) but different year. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. The more intakes added, the higher a plane can go before a flame-out, which makes multiple intakes a must on SSTO spaceplanes. Hint:The engine pre-cooler and engine nacelle are fantastic air intakes, and they can be mounted in-line or combined with other elements. Of course the cargo capacity is less than with a HTOL since you're using some of it to haul those vertical thrusters. LTTP but anyway: the question is, practical for what? The first challenge you're likely to hit is choice of hoverjet. 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). Things that work at low altitude don't work so well up high and the plane ends up going up and down while slowly losing speed until it can't maintain altitude anymore. They sometimes coincide with ailerons on some, more space-economical, aircraft. 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. Would I be better unlocking more parts and leaving this contract for later? Flight records. Paste as plain text instead, Have fun with your S/VTOL craft and don't forget there are more ways to do them as well, including helicopter-like things that don't fly aerodynamically at all. A V/STOL atmospheric craft built for Duna can drop you on any dime, anywhere on the surface. 2. 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. Embedded hyperlinks in a thesis or research paper. Additionally if you have any off-center fuel tanks, double check the fuel is drawn from both at the same rate (same priority). 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. A Screenshot of Kerbal Space Program. Building planes is one of the more fun things to do in Kerbal Space Program, and also leads to more science on kerbin and eventually SSTO spaceplanes. 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. Plane body deformations can cause the wheels to touch the ground at a slightly different angle. Rockets are much less efficient than air-breathers, so it needs to be much bigger than a Kerbin-bound craft performing the same mission! Remembering the FW TA152 and the U2 I put long wings on it and while its turn rate makes an airliner look like a fighter plane it is stable enough at 19000m. 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. principle. I have some really good tips and tricks to add to your tutorial,but Im on my phone at the moment. I've spent the past three hours committing a genocide of historical proportions against my Kerbals, and it's making me quite sad. Set up your control scheme: one action group for toggling the hover jets, another action group for toggling the main jets, plus yet another one to toggle the hover jet bays, if you're using them (as you should). If you have a delta wing with a slight AoA and pitch-control elevons at the back, I also find it works well to rotate the elevons back to the pure horizontal.
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