everytime i make a powered plane, it always flips over and points backwards after i take off. Depending on which surface you place them on, they might not be parallel to the axis in which case. If you placed the main wings at the centre of mass and then added the smaller wings behind, this should be correct already. . Whether you're storing your fuel in fuselage sections, wing sections, or attached inside of cargo bays, it's generally a good idea to keep equal amounts of fuel at equal distances from your center of mass. 2 will usually do nicely, but 3 or 4 are usually better (but of course heavier, and this tutorial assumes you use 2). While it's true that jet engines don't work in space, they offer one large advantage over rocket engines while inside the atmosphere: fuel efficiency. 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. 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. Wing shapes do not appear to have a significant impact on drag or drag-to-lift ratio at this time, but swept wings are still an easy way to help ensure that your center of lift stays behind your center of mass. Unstable Aircraft: "FAR Firehound" (Stock). If your spaceplane is difficult to land when full of fuel but easy to land when empty, then it may be helpful to burn off or transfer out most of the excess fuel before landing to make the aircraft lighter. But also check to make sure that your wheels are placed symmetrically and your engines are aligned properly. Increasing the number of intakes will not allow you to continue using your jet engines at higher altitudes. Keep in mind that lift rating and control surfaces are not connected: lift rating is basically the capacity of your wings to sustain the weight of your spaceplane, while control surfaces are parts of wing that can be moved to change the flow of the air around the plane and through this change a plane's direction, angle of attack or inclination. This aircraft handles smoothly, no matter how you turn, roll and flip this aircraft, it will never lose control. I have created a score of other aircrafts with different designs but deleted them because they didnt work even on the runway. This is either a collider or design issue, if the craft doesn't have enough lift initially to get off the ground it will bounce a bit before taking off. A good example of this is at the KSC runway when landing on a 90 degree bearing. They sometimes coincide with elevators. I dunno why but this picture makes the one side look like it is tipped in but I know they are straight, I believe it just the angle that the picture was taken that is causing it to look like this. It's strongly recommended to keep your landing gears well-spaced from each other to ensure that the aircraft will be difficult to roll into a collision. Next you need landing gear. KSP Stock Space Shuttle by _ForgeUser18393701. (Yes, you personally, you lucky thing! The FedEx plane pulled back up in time to avoid a collision. Congratulations! If rear landing gear are strutted together, or braced to a center point, they are less likely to torque in different directions. 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. 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. 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. That way you can use aerodynamics to lower the tail, rather than trying to raise the nose. Vice versa a plane with lots of control surfaces will be perfectly controllable (maybe even too much) but may have big difficulties with taking off and landing at reasonable speeds. This helped immensely and if you haven't been doing this already, do it. 2022 Take-Two Interactive Software, Inc. http://forum.kerbalspaceprogram.com/threads/99660-0-25-Adjustable-Landing-Gear-v1-0-4%28doors-fixed%29-Nov-14. Also pay attention to your fuel balance, especially if you're using several tanks placed in parallel to each other. Here, the. This material may not be published, broadcast, rewritten, or redistributed. These occur at their worst when your center of gravity is far ahead of your rear landing gears and you have a heavy plane at high speeds and a high angle of attack on landing, resulting in your front landing gear rapidly striking the runway after your rear landing gears touchdown. Make sure that all of your landing gears are pointing in exactly the same direction. A control surface with 100% control surface portion will weigh twice as much as a wing with the same lift would weigh. Your previous content has been restored. Some testing is usually required with new designs to determine the best ascent profile. * Unlock steering and disable brakes on front gear. here are some images and a gif. LV-N engines also have the advantage of using the same liquid for propellant that jet engines use for fuel. How do I fix this? For spaceplanes, avoid the FAT parts (wing, tail fin, and control surface). And at the extreme, producing down force, which I'm sure would cause more gear issues. I shouldn't have placed landing gears on the fuselage, I found that placing landing gears on flat surfaces like wings make landing gears a lot more stable. Thanks for all the help. You want to get up to get the gear tucked away and reduce drag. Now for the engines. Create an account to follow your favorite communities and start taking part in conversations. My plane usually take off at a little over 120m/s. FOX 56 News Video More Videos The Kerbal Space Program subreddit. The issue is my plane rolls very sharply to the left any time I pitch up. One idea I haven't noticed here yet: "wire up" the landing gear, with strut connectors. 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). If you are using B9 Rocketery or other parts that utilize Firesplitter, this is normal. my planes keep flipping backwards on take off . All lift-rating means is that the wing section will resist motion perpendicular to its plane. Your previous content has been restored. Such flight involves lift-induced drag, but reduces the total thrust required to traverse a distance at a given speed. In contrast, if you attempt a landing at the KSC runway on a 270 degree bearing, you run the risk of colliding with the upward slope shortly beyond the runway if you can't slow down initially and then can't speed up fast enough. You can also use parachutes on landing, but care must be taken to ensure that an adequate length of runway remains since you'll only get one chance to use them. 200 m/s runway stability just doesn't seem to have a worthwhile purpose to me, and is inducing counter productive engineering challenges. 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. It is also said that a good landing is one you can walk away from. 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. For heavy rockets, it might be required to use structure to space the gears away from the body to allow more pitch. That will align with the craft axis. Tell ya what, I'm gonna try to recreate that thing in my sandbox and see what I get. And, of course, try to take off and land as slow as possible. 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 an example, see the A-10 Warthog's landing gears: link. Landing speed (minimum speed for level flight) can be reduced by adding components to increase maneuverability, by using larger wings, by increasing wing angle of attack on the fuselage (3-5 degrees is the recommended range for a spaceplane to achieve the best lift-to-drag ratio [source]), and by decreasing the weight of the aircraft. Reddit and its partners use cookies and similar technologies to provide you with a better experience. For more information, please see our Managed to fix it with some different wings; idk what was going on with the other ones but I was just thr FAT aeroplane wings. Saves a lot of headache in wheels placement. if mounted on not struted part) 2. put your main gear slightly behind center of mass. Thermal turbulence, caused by convection, happens below clouds and typically only impacts planes during takeoff and landing. 1. The reverse also happens. They all had landing gear placed at the front and at the back. Plane wobble during takeoff - KSP1 Gameplay Questions and Tutorials - Kerbal Space Program Forums Is there a way to place landing gear so that i can guarantee my plane can remain stable on the runway even at high speed in excess of 200m/s? Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. I worked through the tutorials and I think my problem was most often a lack of lift, or perhaps more accurately sufficient control surfaces. You should be able to navigate fairly readily, and with the superb efficiency of jet engines, you should have plenty of fuel to go anywhere you need to go. Clear editor. I just thought my planes were too heavy or not enough control surfaces. Canards and horizontal tail fins should be placed as far towards the front and back of your aircraft as possible, respectively. In vanilla KSP, wings have a predefined lift factor. If you have an account, sign in now to post with your account. 32.5K Downloads Updated Dec 11, 2014 Created Dec 11, 2014. Also note that shock cone intakes appear to provide the best air supply at all mach speeds, and unlike other air intakes, they do not decline in performance beyond certain mach speeds. Either one of those being misaligned will cause instability on the runway during takeoff (and the engines misaligned will cause flight problems). Set up for a long glide path, and watch rate of climb indicator at top of screen, aim for -5 m/s. These have an ISP of 800 in a vacuum which is significantly better than all other rocket motors except the very weak IX-6315 ion rocket. This ensures that your aircraft will go up once it achieves a high enough speed, and also helps with placing ailerons. - Have enough lift, either by a big wing area or high speed. Your wings provide the lift, and they cant provide lift if your wheels are too far back because then your base is to stable and the craft wont pivot upwards. As such, you will need various control surfaces. 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. This thread is archived . Works well on small craft. Hello, I am having a small problem with a plane I have built. Powered by Invision Community. I was wrong. Bit late i know, but i had the same problem. I started investigating why this was happening. So if I start encountering wobble it's time to pull back on the stick and get in the air. With a tail-dragger, the plane is already angled up just sitting on its wheels so once the speed is high enough, it should just float up by itself. Just after having taken off, the plane will immediately start rolling to the right, and completely uncontrollably. They all had to use the runway drop to take off. 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. Ailerons to roll your aircraft should be placed as far off to the edges of your wings as possible. So you want to make a plane but all your contraptions explode on the runway, crash into the runway a few seconds after taking off, crash into the side of the runway, crash into the ocean after doing a tight turn or otherwise fail to do what you intended? This is good for spaceplanes operating in low-oxygen atmospheres where jet engines can't be used. If you have seen the examples above, I have planes that have angled landing gear and they work perfectly, yet some planes with straight landing gears don't. symmetry building makes them face slightly towards (or away from) each other, with wobbly results. At that point, the plane could potentially start spinning around as a result of losing the benefit of the gimbal control of the engine. Pasted as rich text. Note: Some high-efficiency rocket engines lose most of their power and efficiency in low atmosphere. It is also advisable to add some control surfaces to your plane to have some control in the atmosphere: you can manually add them to the wings or choose winglets with effective control surfaces, like the Standard Canard. Install S5 moon rocket By lightbreaker_64. Another trick is to move the rear landing gear forward, closer to the center of gravity. If you use an Advanced SAS, and raise your front landing wheel so that it is higher than the rear wheels, by just turning the SAS on and going full throttle, due to the 10 degree angle of the plane, it should eventually take off by itself. I moved the back landing gear to right underneath the COM. Does anybidy have any tips on how to build spaceplanes? If there is, I would have found it long ago. Heavy transport seaplane inspired to the Soviet Beriev A-40 Albatros which also appears in Evangelion 2.0! Brakes in the back keep you stable. You main problem is your landing gear. ), Stable aircraft: "Untitled" (lost the file upon loading after aircraft), Stable jet car: "Untitled" (Lost the file), Speed over land > 350 m/s before veering off the runway, Sometimes Stable Spaceplane: "Hypersonic Experimental". wings, unless they're very well braced). Do you have a screenshot of the craft? Is there a way to rectify this problem. Safety note: Disable the brakes on the front landing gear. I'm making sure that I keep trying to get it up but it just wont go! Firstly you're going to want to make a short fuselage. However, they are extremely heavy for their power, weighing as much as a conventional rocket nearly 11 times more powerful. Aircraft in this game is almost unfeasible, especially in career mode, you will lose all your money before you finally design an aircraft that can even takeoff. Notice how the landing gears are placed out on the wings. - Make sure you have enough control authority to lift the nose up. Note: This tutorial was last updated for version 1.7.2. Powered by Invision Community. Consequently, atmospheric reentry is less dangerous with a Mk2 or Mk3 fuselage, compared to reentry with Mk1 fuselages. Rapiers generally provide less thrust than a Whiplash at speeds below mach 2, but provide more thrust at higher speeds. This makes design easier, eliminating all concern for balancing jet fuel against rocket fuel. Display as a link instead, 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? Ideally, you ought to test landing the spaceplane with full fuel tanks and with nearly empty fuel tanks prior to taking your spaceplane to orbit.