The issue is my plane rolls very sharply to the left any time I pitch up. If you can give a craft file and a mod list I could take a look. I have doubled the max stress value for aerodynamics failure in FAR for every category. Powered by Invision Community. You cannot paste images directly. Thanks for all the help. the I place on the wing and attach landing gear on those, it sometimes takes a few tries to find the right spot but well worth it. The problem could be about the angle of wheels, though there could be more problems with the COM and wheels placement. Spaceplanes generally ascend best on a 10-30 degree incline, often leveling out towards higher altitudes to pick up the maximum horizontal velocity before switching to rocket motors. Upload or insert images from URL. Try disabling friction control with on the front landing gears. In vanilla KSP, wings have a predefined lift factor. Close to empty tanks will allow you to fly slower, decelerate faster, and reduce touchdown strain. wings, unless they're very well braced). If you're planning on landing on a somewhat uneven surface, like an open grassland somewhere on Kerbin or an island on Laythe, consider packing some parachutes for deceleration. Plane spins/lurches to the side during takeoff? If the problem has to do with lift then travelling very slowly, possibly even slower than that, should counteract the effects of lift and you won't drift nearly as much. But be careful and don't crash it! This allows you to avoid the extra weight and mass of additional fuselage parts, so you only have to deal with the extra weight of the fuel itself. They could go up to 120 m/s on the runway and still not lift up. Remember how you want your center of lift/drag to be behind the center of gravity? I managed to successfully takeoff and land this aircraft at least 20 times in a roll now and I haven't even lost a single pilot flying this. Try not to place your gears to wings, especially wingtips - if they wobble even slightly, your plane lose the balance. All the weight is pushed on the middle and it can't pull up. Depending on which surface you place them on, they might not be parallel to the axis in which case. Brakes in the back keep you stable. Maybe ;making the tailwheel less stiff would help, too. As lift increases you remove some strain on the gear, however you've just increased the amount of sag. This aircraft can takeoff at just above 50 m/s and can glide for a few minutes without engine. 1. This page was last edited on 19 February 2020, at 07:08. So I have played the game for 200 hours and I love it. And at the extreme, producing down force, which I'm sure would cause more gear issues. LV-N "Nerv" nuclear thermal rockets are commonly used on SSTOs for the rocket stage if Rapiers are not used. Keep your nose pointed prograde as you descend through the atmosphere. You should have something called an "Elevon 1"; this will be the moving part for your wings. Re-entry heating can destroy parts of your spaceplane, or destroy it entirely. Your link has been automatically embedded. I feel tat it is either due to the symmetry placement in this game being inaccurate or certain parts where i anchor my landing gears on are not perfectly symmetrical and the physics calculation is just too sensitive about even the slightest misalignment. Another trick is to move the rear landing gear forward, closer to the center of gravity. Landing is hard. Elevators are usually places in the front or back of an aircraft, and their function, as the name implies, is to change the pitch of the nose up and down. * Gear not mounted to parts that will flex (e.g. S5 moon rocket by lightbreaker_64. 200 m/s runway stability just doesn't seem to have a worthwhile purpose to me, and is inducing counter productive engineering challenges. Clear editor. EDIT: So, I set the front landing gear spring and damper to 0.5, and also set the tail gear spring and damper to 2, and the problem was fixed! So if I start encountering wobble it's time to pull back on the stick and get in the air. 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!). Be aware that while this angle will provide the lowest possible landing speed for your spaceplane, it will create problems if your center of gravity is too far ahead of your rear landing gears (causing a high-speed nose collision on touchdown) or if your rear landing gears are too far ahead of your engines, causing them to strike the runway first. All rights reserved. You can even try refueling it before recovering your spaceplane further increasing your recovering value. That said, parachutes are an exceedingly effective means of reducing your stopping distance. You've just unlocked "Aviation" tech, you have a bunch of contracts that require you to stay at low altitude, and you want to build your first plane? With initial passes, you start off with a periapsis at 50-60 km and gradually lower your apoapsis until you're in an almost circularized low orbit and then transition to your usual re-entry approach. 3. make sure your center of mass is slightly in front of center of lift force. I've had stability issues in planes where I'd have proper gear setup, balanced weight and lift. For some reason, when the plane is trying to take off and pulling up, the plane begins to bounce on it's front wheels (the back wheel kicks up), whichhinders the plane taking off. There are several forces in Kerbal Space Program which have an effect on the flight characteristics of SSTO craft. At that point, the plane could potentially start spinning around as a result of losing the benefit of the gimbal control of the engine. The centre of mass was between the 2 landing gears. Now imagine what happens like that. This is just a general briefing section with lots of "to do" or "not to do" things: when you think you've got it, check the Aeris 4A tutorial mission to learn how to get into space easily. This can turn into a fatal scenario if the center of mass gets behind the center of lift and you enter a flat spin. However it's huge size can make it tricky to take off from the runway without destroying the engine. That, combined with a Unity joint bug, makes your plane bounce. @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. However, they are extremely heavy for their power, weighing as much as a conventional rocket nearly 11 times more powerful. Need to move them up. To avoid swerving on takeoff and landing, it is strongly recommended to turn off or reduce the strength of the front brake on your aircraft, as well as to reduce the friction control. Though, I use the FAR mod which will change things, so I can't guarantee the results will be useful, but it might be interesting. Or maybe launching it in a vertical, Space Shuttle-style config. If you keep all of the fuel in the front, you may find that your center of mass drifts backwards as your fuel drains. This is most likely the standard jitterbugging problem. Thanks for the help guys. As such, you will need various control surfaces. And also place them further apart. They all had landing gear placed at the front and at the back. Descending greater than -10 m/s usually makes a mess. Edit: I made a simple easy plane in career mode that is both stable and cheap: A trick i've used before is to put modular girders on the sides of the fuselage and putting the gear on the bottom of the girders. Doesnt make sense so just do this: Nope that didn't solve anything, even when the plane is past the runway and gliding on the little bit of space before the ocean it will slowly lower to the ocean, what am I doing wrong? KSP Stock Space Shuttle by _ForgeUser18393701. When I use it for spaceplane guidance it keeps me on the correct heading, but the flight is very busy sine wave of a path. Also note that for maximum efficiency, you should make sure that your horizontal control surfaces are rotated to exactly the same pitch that you've rotated your wings. They are able to operate at higher altitudes and can even continue operating in a vacuum by switching to a rocket mode. That's over 2x the normal recommended max. I made a KSP replica of the Horten Ho 229 while trying to make a short takeoff plane.If you have any questions or suggestions, let me know in the comments.My. To do this, take a few barrels of your jet fuel, stick them on the back of your aircraft. Everything looks perfectly symmetrical as far as I can tell. The plane is clearly unstable. 1. tilt of the plane. You can also angle the wings themselves slightly upwards (using WASDQE) in order to make them generate more lift when horizontal. The most dangerous part of a spaceplane flight is returning from orbit. The issue is my plane rolls very sharply to the left any time I pitch up. While I am not a great plane builder there is a part in the structural (I think it is a pylon?) At around . For some reason, when the plane is trying to take off and pulling up, the plane begins to bounce on it's front wheels (the back wheel kicks up), which hinders the plane taking off. If, instead, all goes well, then once your jet engines have shut down you will need to start the second part of your space mission by switching to rockets. LV-N engines also have the advantage of using the same liquid for propellant that jet engines use for fuel. Hello, I am having a small problem with a plane I have built. This is generally an issue of not spacing your landing gears out far enough apart. I just thought my planes were too heavy or not enough control surfaces. Go on, and take the plane capsule which looks like a converted fuel storage device. Increasing the number of intakes will not allow you to continue using your jet engines at higher altitudes. Your aircraft might just be too heavy - there might not be enough wing lift for it to take off the ground. Your very own tutorial.). Set up for a long glide path, and watch rate of climb indicator at top of screen, aim for -5 m/s. Heavy Cargo Space Plane SSTO Download. Do you have a screenshot of the craft? Kerbal Space Program 2's simulation is a lot more in-depth than its predecessor, where it was feasible for any wannabe Goddard to punch through the atmosphere with overwhelming thrust. Now I'll walk you through a basic aircraft; fancy stuff like science equipment can be added later. All trademarks are property of their respective owners in the US and other countries. Consider placing your rear landing gears close to the spaceplane's center of mass, but be careful to avoid an engine collision with the runway. If you can't slow down in time, you can simply flick your engines back on to take off and turn around for another try as you pass over the coast. For myself, it always was the position of landing gear in terms of pitch. One idea I haven't noticed here yet: "wire up" the landing gear, with strut connectors. Because of how small Kerbin is and how high its gravity is, a perfectly flat surface just north of the equator will cause planes taking off to bias to the right of the runway, as if they were rolling downhill. 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! You can slow down either by deploying landing gears (and airbrakes if you have them) or by repeatedly pitching up and then back down to increase your drag. In fact, nothing will happen at all, and that's probably bad, so put an air intake on your plane anyway. Any ideas? I have found a solution to my problem. Slowly pitch up to avoid overheating. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. For your first flight, it may be easiest to ignore yaw altogether and just maneuver by rolling slightly and pitching. 2022 Take-Two Interactive Software, Inc. I was attaining high speeds on the runway without getting off the ground, which made the plane yaw back and forth. 6.4K Downloads Updated Jun 7, 2017 Created Jun 7, 2017. . Unstable Aircraft: "FAR Firehound" (Stock). Sometimes taking things off and re-attaching them does it, or you may have to go so far as to scrap the design and rebuild.
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Badass Italian Nicknames, Articles K