For this to happen, I'm assuming you're using rocket fuel tanks. Press question mark to learn the rest of the keyboard shortcuts. Try disabling friction control with on the front landing gears. If there is, I would have found it long ago. Note: Your post will require moderator approval before it will be visible. Landing is hard. 6.4K Downloads Updated Jun 7, 2017 Created Jun 7, 2017. . My Space Plane Keeps Flipping Backwards On The Runway. I can not get any aircraft-style spaceplane take off from the runway, they will stay on until the end, where the engines crash into the ground and explode. Privacy Policy. It provides a wider, more stable wheel base while keeping the wheels straight up and down (no camber). Here is the best aircraft I have created to date: Jet Aircraft. I just thought my planes were too heavy or not enough control surfaces. Remember how you want your center of lift/drag to be behind the center of gravity? 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. First of all, since the launch happens horizontally, you will have to include landing gears, and you will most likely want to include jet engines for the first stage for excellent fuel and cost efficiency. The default max stress value is just ridiculous, its like flying in hair gel, everything gets torn apart so easily, like that will ever happen in real life. I have created a score of other aircrafts with different designs but deleted them because they didnt work even on the runway. All rights reserved. As you approach 35-50 km, your aircraft will most likely level itself out, at which point you can try aiming about five degrees above the horizon line. For example, having your landing gears located near the ends of the wings is an easy way to ensure that you don't roll and shred your wings when landing or taking off. All I have are the parts from the Aerodynamics tech and the gear bay (wheels). 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. For myself, it always was the position of landing gear in terms of pitch. Easier just to bring the rear wheels closer as well as a in line reacton wheel. Paste as plain text instead, 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. i have no idea why this happens please help. Besides the good advice others have given, I would also be very careful with that little tailwheel. Then at the top, we'll put one tail fin, centred on the end of the fuselage. * Gear not mounted to parts that will flex (e.g. You may also want to deploy your landing gears to increase your drag, as well as airbrakes if you have them. 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. Wow, if you need 200 m\s to take off, you should think about adding more lift. Here is an example of landing gear place on a complex geometric surface: Unstable plane Rear landing gears only seems to work on cylindrical fuselage, if you place them on a fuselage intake or anything other than a cylinder, the wheels can behave strangely. I see absolutely no need to be traveling that fast down the runway. Those and the fixed main gear are NOTORIOUSLY bouncy. Plane bouncing on takeoff - Gameplay Questions and Tutorials - Kerbal Space Program Forums Hello, I am having a small problem with a plane I have built. 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. KSP 2 speculation: I believe terraforming will be a feature of the game. What you ought to be using is the Swept Wings and Elevon 1s instead of the Delta-Deluxe Winglets. The centre of mass was between the 2 landing gears. In fact, nothing will happen at all, and that's probably bad, so put an air intake on your plane anyway. Display as a link instead, As with everything in KSP, experiment, experiment, experiment. Go on, and take the plane capsule which looks like a converted fuel storage device. They sometimes coincide with elevators. 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. https://forum.kerbalspaceprogram.com/index.php?/topic/124380-wing-lift-amp-wing-lift-to-drag-ratio-charts/, https://wiki.kerbalspaceprogram.com/index.php?title=Tutorial:_Spaceplane_basics&oldid=100619. All the weight is pushed on the middle and it can't pull up. Your link has been automatically embedded. Pasted as rich text. Also, lift is usually placed in the middle-to-back of the wing, depending on the shape. Note that the lift rating does not mean that the wings will automatically lift a spaceplane into the air when it's moving forward. * Unlock steering and disable brakes on front gear. if its too far behind plane cannot lift. I'm trying to do some of the surveying and taxi-ing missions because now that's all the games giving me but flying with a regular rockets just not working for me. So yesterday I was playing some KSP2, and resumed the game from a save where I had landed in Duna. You cannot paste images directly. You want an elevon on each set of wings. These have extremely poor temperature tolerance and will almost inevitably break up during atmospheric reentry. I dont really need 200m/s for take off. Balanced fuel saves Kerbal lives. Powered by Invision Community. 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. Or adding a RATO boosters. I worked through the tutorials and I think my problem was most often a lack of lift, or perhaps more accurately sufficient control surfaces. This helps to keep the performance of your spaceplane stable with any amount of fuel. Saves a lot of headache in wheels placement. I was attaining high speeds on the runway without getting off the ground, which made the plane yaw back and forth. If you need to carry more fuel, consider using the Big-S Delta Wing as it provides the same lift-to-drag and lift-to-weight ratio as any other wing of the same mass, yet has the ability to carry fuel as well. I have doubled the max stress value for aerodynamics failure in FAR for every category. Or maybe launching it in a vertical, Space Shuttle-style config. All lift-rating means is that the wing section will resist motion perpendicular to its plane. The reverse also happens. Alternatively, you can try landing at higher speeds with your nose pointed further down, but this increases challenges with stability and deceleration while on the runway. 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. Ideally, the wings should be tilted upward at an angle about 3-5 from the fuselage for optimal lift-to-drag ratio.[1]. My first test of the plane parts in KSP2.Like and Subscribe for more Kerbal stuffs!#kerbalspaceprogram #ksp2 #kerbalspaceprogram2 #shorts #spaceplane #nasa Your plane is almost finished. If your rear wheels are too far back the aircraft will not be able to pivot on the wheels and lift its nose up. I took off and at 60 m/s I was in the air! 4. In an aircraft with two or more engines, this can potentially cause you to enter a flat spin which can be unrecoverable if your center of mass is behind your center of lift. I do add a strut to each wheel out of habit since my earlier versions use to roll, better safe than sorry. Any ideas? here are some images and a gif. At that point, the plane could potentially start spinning around as a result of losing the benefit of the gimbal control of the engine. If you keep all of the fuel in the front, you may find that your center of mass drifts backwards as your fuel drains. They all had to use the runway drop to take off. @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. Note that canards are somewhat more efficient than horizontal tail fins since canards provide an upward force with upward rotation, and downward force with downward rotation. This can turn into a fatal scenario if the center of mass gets behind the center of lift and you enter a flat spin. Paste as plain text instead, Here are a few pictures of it: Take a picture with center of mass and center of lift turned on. This is an important distinction; a plane with great lift rating but without any control surfaces will fly easily but will be almost uncontrollable. To minimize the risk of such a situation, try to land on a large patch of flat open ground approaching a downhill slope. - KSP Matt Lowne 527K subscribers 1.3M views 2 years ago I've wanted. Here is your convenient solution to this problem! After externsive testing and bloodpressure rise, results: it doesnt matter where you place the wheels, as long as they are not angled on the X (nose-tail) axis. my planes keep flipping backwards on take off . Not sure why you would want that stability for speeds in excess of 200 m/s though, as most planes will take off and land at far slower speeds. Heavy Cargo Space Plane SSTO Download. Thank you and happy landings. Cure: Draw a mental axis from the nose to the tail of the plane and use the rotate tool (summetry on), on one of the wheels. The problem could be due to several issues. 3. angle of the wheels. That's over 2x the normal recommended max. Nothing bad will happen. Then this tutorial is for you. my center of lift is always slightly infront of my mass. Check out the following guide for some good info: Your wheel base is the problem. Increasing the number of intakes will not allow you to continue using your jet engines at higher altitudes. 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. To avoid wobble, wheels need to be absolutely vertical, and they shouldn't be attached to something that is likely to flex as speed builds up, as this could also affect the vertical alignment. Keep your spaceplane pointed about 90 degrees above prograde so that the wings and body of your aircraft slow you down as much as possible. This makes design easier, eliminating all concern for balancing jet fuel against rocket fuel. Hopefully this gets you your first aircraft that can take off and land, which is the biggest hurdle to being able to make KSP aircraft. Even if you can takeoff, landing will usually destroy tat aircraft so survival rate on an aircraft for a typical kerbal is nearly zero. 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. First try speed over land reached over 210 m/s before flipping in the last second. The SSTO I took to Laythe recently has only one minor flaw using this design, I have to raise the landing gear and pull back slightly to take off.