Of course the cargo capacity is less than with a HTOL since you're using some of it to haul those vertical thrusters. 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. Before building planes though, there are some inportant things to know. 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. Except for the parts regarding drag and number of intakes, everything else is still very valid. And one other, more remote possibility to check: Where is your plane's center of drag? What is Wario dropping at the end of Super Mario Land 2 and why? Your previous content has been restored. You arent doing anything wrong. Here's how you go about building a VTOL under these constraints. Reddit and its partners use cookies and similar technologies to provide you with a better experience. So if you're getting those flame-outs, add more intakes until you don't get them anymore. 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. Guest, Can't remember where I saw/read about it - Scott Manley maybe? This happens in two instances; initial placement and plane body deformation. You need about 150 m/s for the landing, less than that for take-off. [Stock] Brikoleur's Guide to VTOL Aircraft, fuel and trying to add more fuel means you need. 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. Better still, three screenshots showing side, top, and rear views. Paint a picture in that little head of yours, imagine that the Mass was in the back, when you stall it, it will ALWAYS fall backwards and. Firstly you're going to want to make a short fuselage. Control surfaces are your friend. Pasted as rich text. 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. ps2. You may be correct and that 3 engine plane is a lemon. A twin-pod design is similar to a twin-boom, except that it has a conventional tail extending from the fuselage. front, then it automatically disbalances the weight moving the weight to the back. 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. @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. Things get ugly!!). All rights reserved. With a decent lever arm to work with you can be both perfectly stable in level flight and very agile in pitch and yaw controls. 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. Whiplash is the engine you would want to use on a plane meant to go 20km. Cookie Notice 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. Lift, the canard button), and finally CoT (Center of Thrust, the thruster button) 2. Start with simplest, easiest planes you can and then increase complexity observing and mitigating problems as they arise. A Screenshot of Kerbal Space Program. Your plane is almost finished. 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. Similar to the fuel pump mods out there now. Also, excessive use of the rudder usually causes the plane to spin out of control and crash. The BAK Zephyr, a rocket-powered VTOL craft designed for conducting science missions on Duna. 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. Ok, the panther engine is still not good enough. Here's how you go about building a VTOL under these constraints. From my experience using a panther it starts to lose speed after 15-16 kms, a more suitable cruising height is 9-13km. For the CoM / CoL relationship to get a stable-yet-maneuverable craft, I'd recommend doing the tweaks in two stages. @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. Espaol - Latinoamrica (Spanish - Latin America), https://steamcommunity.com/sharedfiles/filedetails/?id=1933948095, https://steamcommunity.com/sharedfiles/filedetails/?id=1933948668, https://steamcommunity.com/sharedfiles/filedetails/?id=1934517923, https://steamcommunity.com/sharedfiles/filedetails/?id=1335577943, https://steamcommunity.com/sharedfiles/filedetails/?id=1640213502, https://steamcommunity.com/sharedfiles/filedetails/?id=1640214586, https://steamcommunity.com/sharedfiles/filedetails/?id=1937826505, https://steamcommunity.com/sharedfiles/filedetails/?id=1937931692. 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. 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. They optimize use of oxidizer in SSTOs. 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. 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. 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. Reddit and its partners use cookies and similar technologies to provide you with a better experience. The main challenge for hover control is to keep the craft horizontal. The CoL should be in the center or just behind the CoM. I'd start with a lawn arrow that can be hardly pulled up, horrible to maneuver, with CoL way behind, but rock-stable. I have made a couple VTOLs in the pastand had a lot of fun with both the engineering and flight challenges. The BAK Cyclone hard at work on Duna. Because they're fun and educational and you can. Also: high proportion of lifting surfaces to non-lifting surfaces. Your very own tutorial.). Right click on the control surfaces and knock down the control authority of each item. For more information, please see our Any insights? Take the large delta wings and place them on the aircraft. It flames out at 25,000. My 'plane science' is more advanced than my 'rocket science' (career mode) because I got tired of seeing all the high-altitude missions I had on the books and wanted to finish them. Go on, and take the plane capsule which looks like a converted fuel storage device. Aircraft are surprisingly difficult beasts to build and control, building a stable, flyable aircraft is surprising complicated, so this is the first of a num. You can also use fine controls with the Caps key, or change control surface sensitivity and assigned movements. You know you don't have enough if you're getting engine flame-outs on take-off or, worse, landing. Put the big wings right at the back of the plane. 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! Flight records. You want those tires facing straight to the ground! We look at the principles behind designing a basic jet. Set the thrust limiter on your main engines to zero. 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. @gocket the reason why your solution works is because you are counteracting the imbalance of friction in the wheels as they wobble. It also depends on whether you're using FAR or another aerodynamic rewrite mod that would change the way your aircraft behave. 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! 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 ones that are at an angle must be placed at that exact angle, you can't angle them to make them wider. I was hoping that the new intakes would give it the added altitude. As such, you will need various control surfaces. zombie2u, In 5e D&D and Grim Hollow, how does the Specter transformation affect a human PC in regards to the 'undead' characteristics and spells? 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. It's a flatbed freighter suitable for shuttling base modules to and from the surface. 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. A bigger twin-boom design using two arrays of 18 Junos on each boom and a single array of 9 on the nose. by fixing the suspension issues the need to sacrifice traction, and in turn, braking power, is not needed. Have you noticed this or do you think I might just need more vertical engines when using horizontal intakes only? Flying planes will be much simpler, with much reduced cross-control issues. 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. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. Just like with rockets, get some courageous Kerbal in the cockpit and let's get started! https://wiki.kerbalspaceprogram.com/index.php?title=Tutorial:_Your_First_Plane&oldid=103052. Usually, having one or two medium-sized intakes will more than suffice on a regular plane. Nothing bad will happen. If his problem is the plane doing backflips at a touch of 's', I wouldn't go with 'slightly'. On the other hand, something with a wide wingspan but narrow wings (like the connector Cs) will pitch easily but need more oomph to roll. Is there any way to reliably fix this? If the fuel flows from the. the vertical stabilizer only handles yaw? As you reach 100m/s, hold S to pull the stick back, and you should be in the air! By Simply changing the intakes made it fly completely out of control and impossible to land. Also stock fuel priority is in 1.2, allowing very stable CoM builds. 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. Imagine that first plane but with the bubble cockpit and the old style round intakes. 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. 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. If it doesn't, he can just make the stabilizer bigger; instead of turning down control authority, just add more fixed wing. The same applies to Laythe, although it has gentler topography. (The spacing of COM and COL in your second picture is about right.) That is something I am really looking forward to. 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). Can you check what happens if you increase the tail size to pull the center of drag back? 3. 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. Then this tutorial is for you. So yes, it most definitely is possible. Powered by Invision Community. LTTP but anyway: the question is, practical for what? I only very recently got into planes. 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. Now I have a plane that will fly around the world at an altitude of the low-20s. If additionally you can give it a controlled tilt and hold it there, then it'll start accelerating in that direction, like a helicopter. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Learn more about Stack Overflow the company, and our products. 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. 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. Go ahead and make a new save file or use an old one, it doesn't matter! Your main lift, though, should always be as closely centered on your CoM as you can manage. 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). Then: I hope you've found this short tutorial useful. 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. do you put them vertically or are they at an angle to the ground? 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. There are some really useful tidbits here which deserve some credit. Also, make sure you read this slowly, some of this stuff may be confusing, but, if you read carefully, I will help you out with what everything means. Touch down, CUT throttle, CUT engines, BRAKES ON. When you're close to it, INCREASE THROTTLE until your rate of descent nears zero. 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.

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