(This is key to making a simple functional plane in KSP.) I've been playing around with aircraft over the past couple days, only to find that no matter how low I set the pitch authority, they tumble and crash at the slightest hold of the "S" key. They sometimes coincide with ailerons on some, more space-economical, aircraft. 3. Is there any way to reliably fix this? It is only visible to you. @gokcet @DANKTER I usually run my front wheel override friction on 0.3 when the front gear has steering disabled, it needs lower friction. In principle it's simple just place your fuel symmetrically around the dry CoM, and centre your vertical thrust vector on it but how? This item will only be visible to you, admins, and anyone marked as a creator. Pasted as rich text. I don't have many aerodynamic parts unlocked yet though. Jets are good for a certain amount of static thrust but they don't allow quick control of your vertical speed because of their slow spool time. The two engines have been mounted every imaginable way with the same result: Over the wings, on the fuselage, on girder segments, on the wingtips, etc. Upload or insert images from URL. First, @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, Hahaha absolutely right, but distinctly less satisfying. (if the front gear is the same ditance from the CoM as the 2 rear gears. The main challenge for hover control is to keep the craft horizontal. Light craft have a single engine at the rear of the fuselage. Also, excessive use of the rudder usually causes the plane to spin out of control and crash. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Remember the, fuel flows from the front in KSP, so you might want to start off with the CoM in front of the CoL. It is usually placed back because it can be placed further back than it is possible in the front (if it is placed in the front, it can obstruct the view of the pilot, which is undesired) as well as making the plane unstable (by the same effect that you would get if the center of lift (horizontal lifting surfaces) were in front of the center of mass, but with vertical surfaces). I only very recently got into planes. The absurdly big wing and control surfaces make it highly economical for high-altitude supercruising. If you have a perturbation that gives your left engine a tiny bit more thrust, you will turn slightly right. (KSP 1.9.1) Subscribe - http://www.youtube.com/c/MikeAben?sub-confirmation=1 Patreon - https://. The Panther engine can hold 19,000 steady and oscillates around 20,000. Control your vector primarily with pitch, and your descent rate with throttle. Also as others have pointed out, keeping the COM/COL/COT alignments proper is essential for aircraft. Hi @Brikoleur, nice work! 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. Mach speed - 343 mps. Imagine that first plane but with the bubble cockpit and the old style round intakes. This would certainly have to be revised once Breaking Ground drops, those parts are extremely relevant for VTOL. Archived post. I didn't try for 20000m as it probably wouldn't do well. 4. Edit: After reading it again, it just seems to have a bit too many errors. a craft that's designed to fly aerodynamically, using lift produced by lifting surfaces. Then: I hope you've found this short tutorial useful. Mount your rear wheels out on the wings for better stability. The longest flight got them down to a little more than half full. Control surfaces near center of mass sometimes get "confused" as to their role and do stupid things. If you placed the main wings at the centre of mass and then added the smaller wings behind, this should be correct already. Lift, the canard button), and finally CoT (Center of Thrust, the thruster button) 2. CoL (Blue ball) position relative to CoM (Yellow ball) is very important. Ill link it if interested. Just like with rockets, get some courageous Kerbal in the cockpit and let's get started! At low speeds, this difference can be significant. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Keep pitching up as you approach stall speed. We look at the principles behind designing a basic jet. 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!]. Cookie Notice 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. Then I'd go with moving it towards more maneuvrable by moving CoL towards CoM. Now right click each elevon and the tail fin and set what movement each controls; the ones on the large wings control roll only, the ones on the back wings control pitch only, and the tail fin controls yaw only. We look at the principles behind designing a basic jet. Check out Mike from Merrimack, New Hampshire as he explains to filmmaker Rod Webber what' But they are tons of fun both to design and to fly, which for me is kind of the point of KSP. It's said that takeoffs are optional but landings are mandatory. 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. 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. This is my current best hi alt plane. Why don't we use the 7805 for car phone chargers? A bigger twin-boom design using two arrays of 18 Junos on each boom and a single array of 9 on the nose. This should reduce ground control authority and make oscillations less powerful. 2) Then add the pitch control surfaces. I've spent the past three hours committing a genocide of historical proportions against my Kerbals, and it's making me quite sad. @gocket the reason why your solution works is because you are counteracting the imbalance of friction in the wheels as they wobble. Unless you are using canards (not ideal for lots of reasons, IMHO), adding elevons will pull the CoL backwards since they also provide lift in their neutral position. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? rev2023.5.1.43405. Larger ones have additional wing-mounted pods. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. So basic, anyone can do it. You want to keep the CoL slightly behind the CoM, but not too much to not create torque. 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. Please consider starting a new thread rather than reviving this one. 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). Thank you and happy landings. Adding more engines without adding intakes will make the problem worse. Body deformation can be caused by heavy parts, many parts connected together, or forces on the plane. You cannot paste images directly. And one other, more remote possibility to check: Where is your plane's center of drag? 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? 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. Privacy Policy. Even though it just spawned. LTTP again (KSP on hiatus for a bit), but here's an answer anyway. 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. Simply changing the intakes made it fly completely out of control and impossible to land. - but they were talking about having two intakes/engine. This guide will show how to make simple-ish planes and other aerodynamic tips. Please consider starting a new thread rather than reviving this one. Try not to make your first airplanes longer than 3 MK1 fuselages. 4. You can also use fine controls with the Caps key, or change control surface sensitivity and assigned movements. Always look at your aircraft from a 90* angle on the side. Display as a link instead, How to Make a Perfect Space Plane - KSP1 Tutorials - Kerbal Space At this point you'll probably need to go back to the plane design you started with, because air intakes are dry mass and will shift the CoM as you add them. So if you're getting those flame-outs, add more intakes until you don't get them anymore. My question is really about controllability. Why did DOS-based Windows require HIMEM.SYS to boot? front, then it automatically disbalances the weight moving the weight to the back. So this guide is about atmospheric craft designed to fly by makinguse of lift generated by wings, which can take off and land vertically by use of downward-pointing jets or rockets. KSP should be handing out engineering degrees :). TO achieve the easisest way to balance the fuel tanks i never put usable fuel tank in where i cant move ti easily eg. 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. This happens in two instances; initial placement and plane body deformation. You would need a lot of orbits at 69 km to come down into the ground. Your link has been automatically embedded. The rudder is mostly used when landing and when attempting to line up a shot (in a fighter plane). 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. The gear of the craft can also easily be overlooked, but can make the difference between flying masterpiece and soon-to-be-scraps. This plane will be able to take off, travel somewhere, perform a crew report, and then land. Turns out it was wheel positioning! People put waaaaaaaaay too many control surfaces on things from a lot of the screenshots I see. Hi all so I accepted a contract to do temp scans on Kerbin and guessed a plane was the right way to do it so I made this. 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. ps2. In this tutorial we cover the basics of building and flying a jet in Kerbal Space Program. Subscribe - http://www.youtube.com/c/MikeAben?sub-confirmation=. ps: use caps lock(fine control) to reduce the amount you're actually moving the control surfaces. I've found that all my runway wiggling planes are caused by the wheels. (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 By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Control surfaces are your friend. the vertical stabilizer only handles yaw? These tend to handle . It is certainly possible to make VTOLs that can circumnavigate the planet. jet engine efficiency in this game is based on built in thrust curves. If additionally you can give it a controlled tilt and hold it there, then it'll start accelerating in that direction, like a helicopter. 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. Additionally if you have any off-center fuel tanks, double check the fuel is drawn from both at the same rate (same priority). (However, it must be noted that it is bad practice to use ailerons as elevators since it makes it hard to control the aircraft), The rudder moves the tip of the plane left and right; it is rarely used, since it is hard to put it both up and down due to the possibility of hitting the ground. Otherwise tune the suspension to keep takeoff and landing stable. 2023 Take-Two Interactive Software, Inc. You can post now and register later. Note: Your post will require moderator approval before it will be visible. This is always my strategy for building planes (although sometimes things go horribly wrong for a different reason.) Paste as plain text instead, You may need to change control authority to a negative value if they bend "the wrong way". Because they're fun and educational and you can. Your previous content has been restored. In other words, your fuel tanks need to be placed symmetrically around the centre of mass so it doesn't shift as the tanks dry, and you need to get your vertical thrust vector exactly aligned with said centre of mass. Now, get a pair of winglets, and place them at the front of the plane to get that approximate spacing of COM . 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. Yes! Here is your convenient solution to this problem! if that does not work, lower the spring strength until it works properly. The downside is that it isn't as pretty, but it *does* top out at mach 1.8 with a humble wheesly. Clear editor. 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). This item has been removed from the community because it violates Steam Community & Content Guidelines. New comments cannot be posted and votes cannot be cast. @davidalangay all of the wings provide lift, and some of them also act as a control surfaces, its pretty self explanitory, Im having a weird glitch, where whenever I make a plane (I even tried copying your design in this guide, to the T, and it broke too) they spawn, and if it's a big plane will always veer off to the left and be completely unable to turn right, and if it's small, then it'll start rocking side to side and flip over. Tutorial: Your First Plane - Kerbal Space Program Wiki RCS will get the job done nicely, and looks cool to boot. 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. Best way to get down into thicker air and land is to perform what dogfighters called a 'Split-S'. Which reverse polarity protection is better and why? Your CoT vector will disappear. 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. Can I use the spell Immovable Object to create a castle which floats above the clouds? Connect and share knowledge within a single location that is structured and easy to search. For the CoM / CoL relationship to get a stable-yet-maneuverable craft, I'd recommend doing the tweaks in two stages. 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. OK, I have a really pedantic question here: Is it even possible to have a practical VTOL craft without using the unlimited fuel cheat? Another way to manage this is to mount your wings above your CoM. Now I have a plane that will fly around the world at an altitude of the low-20s. The BAK Cyclone hard at work on Duna. and i usually find having my dampening a little lower then the spring strength keeps the wheels from "biting". You might still be able to turn very quickly, but if you don't have enough wing you won't drag your velocity vector with you, which means you force your wings into a stall and bleed energy in a hurry (and can also lose control, depending). The BAK Zephyr, a rocket-powered VTOL craft designed for conducting science missions on Duna. These tend to handle best. 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? Also, a good tip: If you use a Panther as a lifting engine, and link the 'Dry/Wet' control to the Stage action group, it allows you to have a lot of control over your lifting thrust (by toggling the Space bar). The hoverjets are housed in the big wing-mounted pods. Arqade is a question and answer site for passionate videogamers on all platforms. If his problem is the plane doing backflips at a touch of 's', I wouldn't go with 'slightly'. Powered by Invision Community. 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). 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. 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. I have a simple Vtol SSTO that can take off with junos, hit LKO with rapiers, maybe with 100 m/s left on the rocket side, then return to spaceport and have sufficient liquid fuel for vertical landing. Kerbal Space Program max Surface Sample storage? You too!Like - Subscribe - Check out my other tutorials. Cookie Notice As such, you will need various control surfaces. 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! Now stick a jet engine on the back, and don't forget to put an . 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. what do you mean by "wheels are mounted with angle snapping"? But mostly, the answer is still "because they're fun and educational and you can.". Reaction wheels will balance smaller craft just fine, but are probably insufficient for bigger ones. 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. 3. Kerbin has some biomes that are difficult to reach any other way. Plane - Kerbal Space Program Wiki Valve Corporation. They both create a dihedral effect, tending to return you to level through a roll-sideslip interaction. How do I build a good stable basic plane? [Stock] Brikoleur's Guide to VTOL Aircraft, fuel and trying to add more fuel means you need. Is there such a thing as "right to be heard" by the authorities? Not so with VTOLs: if the CoM shifts, you're not going to be able to land vertically anymore. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. November 1, 2018 in KSP1 Tutorials. If the fuel flows from the. Whiplash is the engine you would want to use on a plane meant to go 20km. Intakes aren't something usually causing planes to fail, however need some thought.
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