there aren't any aerodynamics when you are a kraken scientist like me. [1] At this speed it is possible to circumnavigate Kerbin in about 29 minutes at an altitude of 40 km. In addition to the tips others have suggested, try locking steering on all your wheels. 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. Here's how you go about building a VTOL under these constraints. If his problem is the plane doing backflips at a touch of 's', I wouldn't go with 'slightly'. 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. 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. do you put them vertically or are they at an angle to the ground? Can't remember where I saw/read about it - Scott Manley maybe? This plane will be able to take off, travel somewhere, perform a crew report, and then land. There are some really useful tidbits here which deserve some credit. rev2023.5.1.43405. In other words classic tripod. Smaller wings on the cockpit can be good. 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). This item will only be visible in searches to you, your friends, and admins. (as in, like 45 degrees) usually resulting in the plane exploding. That would oscillate slowly between 16000m and 17000m but was otherwise fully controllable. Move them back and fill them with fuel or weigh them down with control surfaces. 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. In particular, there's one constraint that needs special attention: centre of mass, and the invariance thereof, as you burn fuel. Always look at your aircraft from a 90* angle on the side. I've been having some trouble lately in newer with respect to air flow. Cookie Notice These tend to handle best. @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. I'd start with a lawn arrow that can be hardly pulled up, horrible to maneuver, with CoL way behind, but rock-stable. Mach speed - 343 mps. 2 will usually do nicely, but 3 or 4 are usually better (but of course heavier, and this tutorial assumes you use 2). The twin-boom design is one of my favourites, largely because it looks cool. If it doesn't, he can just make the stabilizer bigger; instead of turning down control authority, just add more fixed wing. 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. Please consider starting a new thread rather than reviving this one. Try reducing control authority (or even generally amount) of control surfaces - rudder, ailerons, the front wheel (maybe even make it a fixed one). Their hoverjets just have a TWR of less than 1.0. Paste as plain text instead, 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). Simply changing the intakes made it fly completely out of control and impossible to land. Turns out it was wheel positioning! Do you by chance know how much the thrust varies with these small velocity perturbations? Interesting design!! Plane veering off course is not uncommon but uneven fuel draw can exacerbate it a lot. Center of Mass - The average of all weight on the plane, this tool will show where gravity will pull . Your plane will be slow and have limited range, or you'll have to make it a lot bigger to brute-force your way around that limitation. The ones that are at an angle must be placed at that exact angle, you can't angle them to make them wider. Yes, although they have only been flown with nearly full tanks. 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. All trademarks are property of their respective owners in the US and other countries. Ill edit this sometime this week. I'm going to strongly suggest using the angle set to 90 degrees + symmetry mode to place landing gears. I don't have many aerodynamic parts unlocked yet though. on the same axis as engines. 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. principle. I haven't found a sure-fire solution to this, but I think I know what causes it. This item has been removed from the community because it violates Steam Community & Content Guidelines. Thanks for any answers! They sometimes coincide with elevators. You would need to get down into the 37k-45k zone to aerobrake enough to come down in one orbit. 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. Another way to manage this is to mount your wings above your CoM. This tutorial was created primarily based on a Reddit post by the incredibly helpful u/AnArgonianSpellsword. Drive gently off the runway and use the huge grassy field to take off, without care in the world about the plane veering to a side. And start small. You can post now and register later. No, the intakes don't have to be vertical. By 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. Also stock fuel priority is in 1.2, allowing very stable CoM builds. and our You want those tires facing straight to the ground! Hi @Brikoleur, nice work! 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. Now I'll walk you through a basic aircraft; fancy stuff like science equipment can be added later. 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). And start small. instead i atach the fuel tanks as radial fuel tanks, or underwing droptanks, so i can slide them on the hull. You need to sign in or create an account to do that. The rudder is mostly used when landing and when attempting to line up a shot (in a fighter plane). This ensures that your aircraft will go up once it achieves a high enough speed, and also helps with placing ailerons. You may need to change control authority to a negative value if they bend "the wrong way". She has a horrible turn rate and oscillates a couple of thousand meters at cruise, but it's flyable. Note the landing area markers. You need about 150 m/s for the landing, less than that for take-off. 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. the front should be close to double the rear gears strength) And Good Guide! as a rule of thumb they all lose thrust at higher altitudes and at high velocities. 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. This item will only be visible to you, admins, and anyone marked as a creator. 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. Also, lift is usually placed in the middle-to-back of the wing, depending on the shape. 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. 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. 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. The main challenge for hover control is to keep the craft horizontal. 19000m. ps2. They can be placed on wings. I only very recently got into planes. Kerbal Space Program, how do you disable autosave? They have in common that it's easy to tweak the balance by moving things around, rather than having to add or remove pieces. Archived post. 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. 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. 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 your first flight, it may be easiest to ignore yaw altogether and just maneuver by rolling slightly and pitching. I was hoping that the new intakes would give it the added altitude. I have made a couple VTOLs in the pastand had a lot of fun with both the engineering and flight challenges. 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). 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. Yes! Does the order of validations and MAC with clear text matter? and our LTTP again (KSP on hiatus for a bit), but here's an answer anyway. 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. Please consider starting a new thread rather than reviving this one. OK, I have a really pedantic question here: Is it even possible to have a practical VTOL craft without using the unlimited fuel cheat? Next you need landing gear. 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. Your previous content has been restored. For comparison the speed of a stable Low Kerbin Orbit at 70 km (outside the atmosphere . Why did DOS-based Windows require HIMEM.SYS to boot? front, then it automatically disbalances the weight moving the weight to the back. This one is balanced with reaction wheels. Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? Before building planes though, there are some inportant things to know.
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