The CoL (Center of Lift) is a blue ball. If it is, you'll never get the nose off the runway. In the crash log, it says that at 00:00:00 there is "Lift-Off!" But mostly, the answer is still "because they're fun and educational and you can.". In that vein I drag optimized the Karmilla, and added science parts. 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. Because of that if you for example place control surfaces at the front you can make a plane that has CoL behind CoM (like in the picture) unstable because CoL will drift forward past CoM as AoA increases (contrary to your 4th point). Most of my planes I'm able to knock each of them down to 40% and still perform 7-8G maneuvers. In addition to the tips others have suggested, try locking steering on all your wheels. 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. Your link has been automatically embedded. On the other hand, atmospheric craft are superb for exploring it for the very same reason you can scout for the perfect spot for your base, then land precisely there. So basic, anyone can do it. 2023 Take-Two Interactive Software, Inc. I'm finding it quite surprising you didn't manage to get the plane to fly yet. Of course the cargo capacity is less than with a HTOL since you're using some of it to haul those vertical thrusters. They're obviously bigger and less efficient than conventional landers again because of the extra engines you're hauling; the advantage is being able to land them exactly where you want, while having the capability to explore the planet with atmospheric flight. You too!Like - Subscribe - Check out my other tutorials. How do I make aircraft stable & smooth to control? Thanks to this guide I did my first ever landing on the VAB helipad! - SF. I also had problems with a high altitude plane until I decided to follow the K.I.S.S. However, don't put any fuel tanks on it yet, and empty any fuel-containing parts that you are using. Put the big wings right at the back of the plane. 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. i dont know what kind of range youre looking for but i would make a significantly smaller plane. It can be as crazy or as normal as you want, just remember these basic tips, 1. Roll is the main way to change direction in flight, and best way to crash the plane on the ground. How do I build a good stable basic plane? : r/KerbalAcademy - Reddit Then I'd go with moving it towards more maneuvrable by moving CoL towards CoM. 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. TO achieve the easisest way to balance the fuel tanks i never put usable fuel tank in where i cant move ti easily eg. Powered by Invision Community. I have also used rocket-powered VTOLs on Duna. 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. How to keep an airplane stable on the runway in Kerbal Space Program? 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. and adust the springs according to how much weight thier carrying. Love it!! That's what this guide is all about, so we're not talking about VTOL rockets that don't make use of wings to produce lift. Your CoT vector will disappear. To start off with, use ANY cockpit you want, this tutorial is going to teach you how to make anything using anything, as long as you follow these directions. So, if you're having this problem then. Your previous content has been restored. Hit the launch button and watch your magnificent bird fly! Clear editor. Arqade is a question and answer site for passionate videogamers on all platforms. Another way to manage this is to mount your wings above your CoM. Here is your convenient solution to this problem! Adding a vertical intake helps. The BAK Drakula. Also: high proportion of lifting surfaces to non-lifting surfaces. They'll still happen but you'll have more time to get off the ground. It may be too far forward, especially if the tail is too small relative to the plane's wings. http://kerbalspaceprogram.com. As such, you will need various control surfaces. zombie2u, and our How do I make aircraft stable & smooth to control? 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. Ok, the panther engine is still not good enough. Interesting, though even being exponential theres a chance it starts out so small it takes longer than a takeoff to reach noticeable levels. Nothing bad will happen. [1] At this speed it is possible to circumnavigate Kerbin in about 29 minutes at an altitude of 40 km. And above all: have fun! 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. For most small-to-normal-sized craft, you should end up with CoL sitting right at the back of the yellow CoM ball. Display as a link instead, Ill edit this sometime this week. 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. ps2. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. 5. 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. More air is better. Please consider starting a new thread rather than reviving this one. Clear editor. 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. LTTP but anyway: the question is, practical for what? In vanilla KSP, wings have a predefined lift factor. You don'thave touse their fuel capacity you might want to leave them dry if they're not symmetrical to the CoM. You may need to change control authority to a negative value if they bend "the wrong way". The same applies to Laythe, although it has gentler topography. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? That would oscillate slowly between 16000m and 17000m but was otherwise fully controllable. If you forget to put an air intake on your airplane, don't worry! I've been having some trouble lately in newer with respect to air flow. Here's how you go about building a VTOL under these constraints. (Yes, you personally, you lucky thing! Any plane needs speed - so you need thrust (usually). 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. hope you and others find that useful in the future! Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. If you have a perturbation that gives your left engine a tiny bit more thrust, you will turn slightly right. Hi @Brikoleur, nice work! 3. [Stock] Brikoleur's Guide to VTOL Aircraft - Kerbal Space Program Forums Haha I think Ive perfected an aestheticallyclean turbine jet VTOL USAF F-35b Lightning II2020 https://imgur.com/gallery/918HyM4 https://imgur.com/gallery/f0NDJxR. 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. Rasterpropmonitor for Kerbal Space Program, How can I cheat docking in Kerbal Space Program. principle. Valve Corporation. 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. This makes one engine generate more thrust than the other, exacerbating the turn. I have made a couple VTOLs in the pastand had a lot of fun with both the engineering and flight challenges. 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. Here's how you go about building a VTOL under these constraints. The Cyclone uses Aerospikes for propulsion. I would really suggest this guide for beginners trying to get into the world of planes in Kerbal Space Program. Do you by chance know how much the thrust varies with these small velocity perturbations? 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. Set the thrust limiter on your main engines to zero. My question is really about controllability. (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. There are some really useful tidbits here which deserve some credit. Now, get a pair of winglets, and place them at the front of the plane to get that approximate spacing of COM . And start small. Reaction wheels will balance smaller craft just fine, but are probably insufficient for bigger ones. The CoG shouldn't be TOO far in front of the CoL, though. For comparison the speed of a stable Low Kerbin Orbit at 70 km (outside the atmosphere . 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. Control surfaces are your friend. For the vertical engines, do you also need to have some verticalintakes? 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. Set the thrust limiter on your main engines to zero. In fact, nothing will happen at all, and that's probably bad, so put an air intake on your plane anyway. Center of Mass - The average of all weight on the plane, this tool will show where gravity will pull . Firstly you're going to want to make a short fuselage. Also, excessive use of the rudder usually causes the plane to spin out of control and crash. air) that high up. Next question? The CoT (Center of Thrust) is purple. 2023 Take-Two Interactive Software, Inc. It is also said that a good landing is one you can walk away from. Note: Your post will require moderator approval before it will be visible. I don't have that other stuff yet. 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). The parts regarding landing gear placement is especially relevant in 1.1.x. 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. Imagine that first plane but with the bubble cockpit and the old style round intakes. 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. You are simply running out of atmosphere (i.e. Your link has been automatically embedded. Paste as plain text instead, This is my current best hi alt plane. 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. Body deformation can be caused by heavy parts, many parts connected together, or forces on the plane. These tend to handle best. Go ahead and make a new save file or use an old one, it doesn't matter! Pasted as rich text. It also depends on whether you're using FAR or another aerodynamic rewrite mod that would change the way your aircraft behave. You need enough intakes to keep them fed. 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!). The first challenge you're likely to hit is choice of hoverjet. 2. 2023 Take-Two Interactive Software, Inc. Always look at your aircraft from a 90* angle on the side. there aren't any aerodynamics when you are a kraken scientist like me. Their hoverjets just have a TWR of less than 1.0. In a twin-boom design, you have one hoverjet at the nose, and one in each of the booms. Simply changing the intakes made it fly completely out of control and impossible to land. A bigger twin-boom design using two arrays of 18 Junos on each boom and a single array of 9 on the nose. This thread is quite old. Kerbal Space Program - Beginners Guide to Aircraft Aerodynamics Adding more engines without adding intakes will make the problem worse. A slight "inwards" tilt on your wings (5 degrees or less) will improve stability hugely and will cause your plane to slowly correct itself in flight, also if you're using large control surfaces at high speeds then the result is obvious. 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. 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). @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. 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.
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