If you keep all of the fuel in the front, you may find that your center of mass drifts backwards as your fuel drains. Your wheels should now have 0 degree angle between them, meaning they are both. In fact, nothing will happen at all, and that's probably bad, so put an air intake on your plane anyway. 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? This thread is archived . What causes turbulence? | WOWK 13 News Beyond that, you're going to get some wobble once you get close to take off speed. 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. 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). Planes and Ships - Shareables - Kerbal Space Program - CurseForge They are able to operate at higher altitudes and can even continue operating in a vacuum by switching to a rocket mode. Depending on which surface you place them on, they might not be parallel to the axis in which case. For heavy rockets, it might be required to use structure to space the gears away from the body to allow more pitch. I have found a solution to my problem. I do add a strut to each wheel out of habit since my earlier versions use to roll, better safe than sorry. When landing, you can achieve the highest lift for a given speed by raising the total angle of attack of your wings to 30 degrees (although this induces a great deal of drag). Check out the following guide for some good info: http://forum.kerbalspaceprogram.com/threads/52080-Basic-Aircraft-Design-Explained-Simply-With-Pictures Alternatively, if you're returning from a high orbit or from an interplanetary trip, you can try repeated shallow passes through the atmosphere. Plane wobble during takeoff - Kerbal Space Program Forums As you reach 100m/s, hold S to pull the stick back, and you should be in the air! For all your gaming related, space exploration needs. Clear editor. Tell ya what, I'm gonna try to recreate that thing in my sandbox and see what I get. 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. Temperature tolerance is the primary consideration for fuselage choice. To slow down faster, you can increase the braking strength of your rear wheels. But be careful and don't crash it! Next you need landing gear. Landing is hard. This aircraft handles smoothly, no matter how you turn, roll and flip this aircraft, it will never lose control. 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. To minimize the risk of such a situation, try to land on a large patch of flat open ground approaching a downhill slope. The reverse also happens. FAA investigating 'close call' between planes at Boston airport Plane bouncing on takeoff - Kerbal Space Program Forums 1. make sure your main gear is not wobbling (ie. Any plane needs speed - so you need thrust (usually). Another trick is to move the rear landing gear forward, closer to the center of gravity. Hot ground causes air to rise, cooling as it moves away from the heat, which leads to increased density and a resulting fall back down. Alright, it's late where I live so I'm gonna hit the hay and come back to it tommorrow, I read on the guide someone sent me and I think it is taht it doesn't have any way of pointing the up, so I'll tinker with some of the wings and see what I can do. When flying straight the plane is pretty stable but pitching up causes a sharp roll and I cant figure out why. The only drawback to the reduced friction is reduced steering control, so this setting may need to be adjusted when taxiing to/from a runway, but should otherwise be kept minimal for takeoff and landing. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. You could do it the kerbal way by attaching two SRBs to the nose of the plane pointing upwards. http://www.youtube.com/user/Cruzanak?. Thermal turbulence, caused by convection, happens below clouds and typically only impacts planes during takeoff and landing. [KSP] - Heavy Seaplane Take-off, Water-landing and Re-take-off! This page was last edited on 17 December 2021, at 13:14. Paste as plain text instead, It is advised to place your control surfaces as far from your center of mass as possible. There are several forces in Kerbal Space Program which have an effect on the flight characteristics of SSTO craft. I also used Intake build aid to balance the intakes. 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. You can post now and register later. Ideally, the wings should be tilted upward at an angle about 3-5 from the fuselage for optimal lift-to-drag ratio.[1]. Such flight involves lift-induced drag, but reduces the total thrust required to traverse a distance at a given speed. But I am still not sure if there are more reasons or perhaps it is just a physics bug which I am wasting my time on. Tutorial: Your First Plane - Kerbal Space Program Wiki 67K subscribers in the KerbalAcademy community. Symmetry placement should give you perfect symmetry, as far as the game is concerned. mods used are OPT for most of the body and the front canards and tail plane, B9 procedural wings for the wings, and mk4 spaceplane parts for the engines. The most dangerous part of a spaceplane flight is returning from orbit. Set up for a long glide path, and watch rate of climb indicator at top of screen, aim for -5 m/s. This makes them a very effective choice for SSTOs since they do a good job of getting maximum velocity out of air-breathing mode, and then allow you to use oxidizer without needing the added weight and drag of a separate rocket engine. 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. 3. angle of the wheels. 2022 Take-Two Interactive Software, Inc. But, likely guess is your craft is not producing enough lift. 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. - Make sure you have enough control authority to lift the nose up. Brakes in the back keep you stable. If you have a very short length of runway remaining and your parachutes can't slow you down fast enough, you'll be forced to cut the chutes and attempt a second landing without them. An alternative is making sure you have complete control of the craft. LV-N "Nerv" nuclear thermal rockets are commonly used on SSTOs for the rocket stage if Rapiers are not used. Clear editor. Angled landing gear create rotational force for whatever reason. To recover the most value from your spaceplane, you should try to land on the runway at the Space Center (this tutorial, although it has been written for spacecraft and not spaceplanes, is a great help). 6.4K Downloads Updated Jun 7, 2017 Created Jun 7, 2017. . 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. I don't have any mods but sometimes a problem may be a simple bug. This helps to keep the performance of your spaceplane stable with any amount of fuel. As with everything in KSP, experiment, experiment, experiment. 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. Notice how the landing gears are placed out on the wings. 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. These have extremely poor temperature tolerance and will almost inevitably break up during atmospheric reentry. I was attaining high speeds on the runway without getting off the ground, which made the plane yaw back and forth. 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. More mass will mean it takes more drag to slow down on reentry, which will mean you go faster at lower altitudes and experience more reentry heating. Here is your convenient solution to this problem! 2022 Take-Two Interactive Software, Inc. In subsequent missions, you may want to launch with less fuel to cut down on cost and make landing a quicker and easier process. - Have enough lift, either by a big wing area or high speed. symmetry building makes them face slightly towards (or away from) each other, with wobbly results. All trademarks are property of their respective owners in the US and other countries. 32.5K Downloads Updated Dec 11, 2014 Created Dec 11, 2014. 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. Here are a few pictures of it: Take a picture with center of mass and center of lift turned on. For your first flight, it may be easiest to ignore yaw altogether and just maneuver by rolling slightly and pitching. This aircraft can takeoff at just above 50 m/s and can glide for a few minutes without engine. If you have an account, sign in now to post with your account. 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. Everything looks perfectly symmetrical as far as I can tell. I have created a score of other aircrafts with different designs but deleted them because they didnt work even on the runway. The plane is clearly unstable. In vanilla KSP, wings have a predefined lift factor. It is due to the spinning up of the engines. Heavy Cargo Space Plane SSTO Download. 1. If you're tired of big rockets that use tons of fuel and disintegrate in the atmosphere when coming back to Kerbin, this tutorial is perfect for you! It's a prolem enough I have sever differen gear subassemblies that are stable (un wobbly) I can then position depending on COM. 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. Congratulations! At around . Display as a link instead, KSP 2 speculation: I believe terraforming will be a feature of the game Center of Mass and Center of Lift are the usual causes of instability. Place your rear wheels/gear in front of the flaps on your wings. This makes design easier, eliminating all concern for balancing jet fuel against rocket fuel. Pasted as rich text. To do this, take a few barrels of your jet fuel, stick them on the back of your aircraft. 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 this to happen, I'm assuming you're using rocket fuel tanks. 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. Display as a link instead, 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. Your previous content has been restored. Let it get good and clear of the ground before applying any control to it. This can turn into a fatal scenario if the center of mass gets behind the center of lift and you enter a flat spin. . And above all: have fun! 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. Similar principles apply when finding suitable landing sites away from the KSC. I have also thought about a wider base. I was wrong. 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. 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? 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? The Whiplash's ridiculous fuel efficiency allows a spaceplane to climb high into the atmosphere and gain a lot of speed while barely using any fuel at all. All of them had one thing in common though. 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. Plane spins/lurches to the side during takeoff? This is an important distinction; a plane with great lift rating but without any control surfaces will fly easily but will be almost uncontrollable. Why does my plane roll left on takeoff : r/KerbalSpaceProgram - reddit Quick context, I am a software engineer. The problem could be due to several issues. A relatively low-drag alternative is to use an inverted cargo bay and some hydraulic cylinders with structural panels as a cargo elevator. 2022 Take-Two Interactive Software, Inc. Those and the fixed main gear are NOTORIOUSLY bouncy. 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. Does anybidy have any tips on how to build spaceplanes? 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. It provides a wider, more stable wheel base while keeping the wheels straight up and down (no camber). You cannot paste images directly. An altitude set to 18,000 meters tops off at 19,000 meters and drops to 15,700 meters . Having landing gears near the front and back of your aircraft can also help to ensure that you won't break your engines or smash your cockpit into the runway. That way you can use aerodynamics to lower the tail, rather than trying to raise the nose. I have no problems using Mechjeb to launch rockets into orbit, rendezvousing and docking with other craft. Suggest a Correction Copyright 2023 Nexstar Media Inc. All rights reserved. KSC's runway is slightly north of Kerbin's equator and perfectly flat. Landing can be trickier for spaceplanes since they are designed for higher speeds than other aircraft and may not be able to fly level at speeds low enough for an easy landing (<50 m/s). 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. 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? 1. make sure your main gear is not wobbling (ie. Then this tutorial is for you. Note that the lift rating does not mean that the wings will automatically lift a spaceplane into the air when it's moving forward. Tutorial: Basic Plane Design - Kerbal Space Program Wiki As such, don't use control surfaces as substitutes for wings, and don't use more control surfaces than you need. 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). I worked through the tutorials and I think my problem was most often a lack of lift, or perhaps more accurately sufficient control surfaces. KSP 2 speculation: I believe terraforming will be a feature of the game. 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. But also check to make sure that your wheels are placed symmetrically and your engines are aligned properly. Why is it doing this? 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. How to Fly a Plane - KSP Beginner's Tutorial - YouTube I have never successfully landed a single aircraft before as they all tend to roll over when landing at high speed. Here is the best aircraft I have created to date: Jet Aircraft. Having said all that, these are the issues you must contend with. The problem could be about the angle of wheels, though there could be more problems with the COM and wheels placement. Try getting the wings to deflect the air down, either by lifting the front end up using canards or by mounting them at an angle using shift + wasdqe. You can deploy your chutes just prior to touchdown for rapid deceleration. 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. Note that no wings will tolerate more than 2400K, so the difference in temperature tolerance between Mk2 and Mk3 fuselages isn't terribly significant. Or maybe launching it in a vertical, Space Shuttle-style config. 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. Also avoid the basic fin for the same reason. For an example, see the A-10 Warthog's landing gears: link. I have doubled the max stress value for aerodynamics failure in FAR for every category. If your spaceplane is able to fly and land steadily at low speeds but just you're having difficulty slowing down as you approach the runway, try to reach your desired speed first and then approach the runway in almost level flight. Keep in mind that as your altitude increases, your control surfaces and winglets will become increasingly ineffective and will no longer work at all once you leave the atmosphere, so you may need to add alternative control systems like reaction wheels or RCS thrusters. - KSP - YouTube 0:00 / 31:25 Flying a Space Station through a GAS GIANT! I have built lots of spaceplanes. Also, excessive use of the rudder usually causes the plane to spin out of control and crash. Even with a stable landing, you may find that you don't have enough room on your desired landing area to come to a stop before you reach the end. Note: Your post will require moderator approval before it will be visible. Yours is a very light plane, and the standard suspension settings are for a medium heavy plane -- so your suspension is too stiff. The centre of mass was between the 2 landing gears. When flying straight the plane is pretty stable but pitching up causes a sharp roll and I cant figure out why. 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! When gear is placed, it has just one point of attachment. That's over 2x the normal recommended max. Either put more engines or reduce the amount of rocket fuel. Secondly, it would suggest that your spaceplane's center of lift is too far forward compared to its center of gravity (causing the uncontrollable spin). As such, you will need various control surfaces. This allows you to takeoff at lower speeds and on shorter runways, and likewise for landing. I removed them and it works fine now. Your link has been automatically embedded. Before you can make a successful plane, you must understand what makes a plane go in places other than the ground - the wings. https://wiki.kerbalspaceprogram.com/index.php?title=Tutorial:_Your_First_Plane&oldid=103052. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. That, combined with a Unity joint bug, makes your plane bounce. The same principle applies here. These should be in the bottom left next to the display of the cost of the aircraft. Keep at around 15 degrees to allow the plane to accelerate past 1000m/s. LV-N engines also have the advantage of using the same liquid for propellant that jet engines use for fuel. This plane will be able to take off, travel somewhere, perform a crew report, and then land. After placing wheels I always use the rotate gizmo on snap with absolute orientation. Your link has been automatically embedded. Bit late i know, but i had the same problem. A Ravenspear Mk3 taking off from the Runway in version 1.0.5. everytime i make a powered plane, it always flips over and points backwards after i take off. I had this one plane, very fast, It would go to 170 m/s on the runway then drop of the end and soar very nicely. Even if you can takeoff, landing will usually destroy tat aircraft so survival rate on an aircraft for a typical kerbal is nearly zero. 5.whether the body you anchor the landing gears to are firm. This is starting to get really frustrating. While having the same stock parts as in the VAB, spaceplane design is obviously quite different from pure rocket design. So the answer is: in the SPH, click on your front gear, set the spring to .5 and set the damper to .5 -- then save it and give it another shot at launching. Pasted as rich text. But regardless of that, try very hard to let the plane fly itself off the ground without you applying any controls. Upload or insert images from URL. This ensures that your aircraft will go up once it achieves a high enough speed, and also helps with placing ailerons. If you can give a craft file and a mod list I could take a look. 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. You need to make sure that the Orange axis on the rotate sphere is parallel to your, nose-tail axis. Just after having taken off, the plane will immediately start rolling to the right, and completely uncontrollably. * Gear not mounted to parts that will flex (e.g. (For test purposes, all aircraft are not pitched up and SAS is turned off. 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. How to make aircraft take off - Kerbal Space Program Forums 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. Either one of those being misaligned will cause instability on the runway during takeoff (and the engines misaligned will cause flight problems). Valve Corporation. Easier just to bring the rear wheels closer as well as a in line reacton wheel. However, they are extremely heavy for their power, weighing as much as a conventional rocket nearly 11 times more powerful. A plane is any craft which flies horizontally in an atmosphere utilizing lift primarily generated by wings, winglets, or control surfaces. Is there a way to rectify this problem. Take the large delta wings and place them on the aircraft. Flying a Space Station through a GAS GIANT! - KSP - YouTube This is also the same reason why planes start rolling toward the middle of the runway; because both ends of the runway are further from . Thanks for all the help. 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. For myself, it always was the position of landing gear in terms of pitch. [KSP 2] I'm trying really hard to make a Mun capable ship but this rocket . Such as not producing lift, which is not what you want with a plane. A control surface with 100% control surface portion will weigh twice as much as a wing with the same lift would weigh. Controllability of a plane is on you. Go on, and take the plane capsule which looks like a converted fuel storage device Contents 1 Making a fuselage 2 Understanding Lift 3 Control Surfaces 3.1 Elevator 3.2 Aileron 3.3 Rudder 4 Landing gear Making a fuselage Any plane needs speed - so you need thrust (usually). I have built lots of spaceplanes. Heavy transport seaplane inspired to the Soviet Beriev A-40 Albatros which also appears in Evangelion 2.0! Now imagine what happens like that. I have created planes that have landing gears place right under the wing tips but they still won't work. Saves a lot of headache in wheels placement. Keep your nose pointed prograde as you descend through the atmosphere. I was wrong. if mounted on not struted part). Make sure that all of your landing gears are pointing in exactly the same direction. Remember how you want your center of lift/drag to be behind the center of gravity? To maximize lift, your aircraft should rest on the ground with the fuselage tilted upward at anywhere up to a 25-27 angle so that the wings will end up tilted back at up to 30. You should have something called an "Elevon 1"; this will be the moving part for your wings. Slowly pitch up to avoid overheating. Your previous content has been restored. To minimize drag, vertical tail fins can be kept minimal, since aircraft can be maneuvered adequately by roll and pitch alone. 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. Firstly, inadequate air intakes for the number and type of engines you're using (causing some engines to shut down before others).

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