Depending on which surface you place them on, they might not be parallel to the axis in which case. It is advised to place your control surfaces as far from your center of mass as possible. my planes keep flipping backwards on take off . If you have an account, sign in now to post with your account. How wide is the base. I worked through the tutorials and I think my problem was most often a lack of lift, or perhaps more accurately sufficient control surfaces. However, I want to place my wheels where i want to and not only on X parallel surfaces. Note: This tutorial was last updated for version 1.7.2. I have never successfully landed a single aircraft before as they all tend to roll over when landing at high speed. To survive re-entry, it's recommended to start your approach back into the atmosphere at a shallow angle, ideally with a periapsis of around 30-35 km. What you ought to be using is the Swept Wings and Elevon 1s instead of the Delta-Deluxe Winglets. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. Do you have a screenshot of the craft? I have doubled the max stress value for aerodynamics failure in FAR for every category. Firstly, inadequate air intakes for the number and type of engines you're using (causing some engines to shut down before others). 2022 Take-Two Interactive Software, Inc. 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. This helps to keep the performance of your spaceplane stable with any amount of fuel. 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. Check out the following guide for some good info: http://forum.kerbalspaceprogram.com/threads/52080-Basic-Aircraft-Design-Explained-Simply-With-Pictures 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. I've had stability issues in planes where I'd have proper gear setup, balanced weight and lift. Here, the. Remember how you want your center of lift/drag to be behind the center of gravity? Ideally, the wings should be tilted upward at an angle about 3-5 from the fuselage for optimal lift-to-drag ratio.[1]. 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. Geometric shape of the body you attach the landing gear to. 2022 Take-Two Interactive Software, Inc. 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. This can easily cause you to crash on landing. If there is, I would have found it long ago. To minimize drag, vertical tail fins can be kept minimal, since aircraft can be maneuvered adequately by roll and pitch alone. While I am not a great plane builder there is a part in the structural (I think it is a pylon?) For spaceplanes, avoid the FAT parts (wing, tail fin, and control surface). To survive re-entry, it's recommended to start your approach back into the atmosphere at a shallow angle, ideally with a periapsis of around 30-35 km. If your rear wheels are too far back the aircraft will not be able to pivot on the wheels and lift its nose up. It Flips Up And Towards The Opposite Direction. 2022 Take-Two Interactive Software, Inc. http://kerbalspaceprogram.com/forum/showthread.php/13851-The-woes-of-building-a-space-plane?highlight=woes+spaceplane. 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. If rear landing gear are strutted together, or braced to a center point, they are less likely to torque in different directions. When gear is placed, it has just one point of attachment. 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. I scoured the entire web for a solution, but found no working solution or at least dont work every time. 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. Note that when your jet engines shut down simultaneously while climbing in otherwise normal flight, it is generally due to a lack of pressure from the altitude you're flying at. (Yes, you personally, you lucky thing! Privacy Policy. Bit late i know, but i had the same problem. 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. Saves a lot of headache in wheels placement. KSP v.22 Takeoff Troubleshooting Guide/Tutorial Lots of info to help get your plane off the runway! 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? KSC's runway is slightly north of Kerbin's equator and perfectly flat. The plane is clearly unstable. 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). If your aircraft is burning up during this stage, you may need larger wings to slow you down faster, radiator panels to carry away the heat more effectively, parts with a higher temperature tolerance (like the Mk2 liquid fuel fuselage instead of the Mk1 liquid fuel fuselage), or parts to increase your maneuverability, like RCS thrusters, reaction wheels, or canards and elevons. My plane tends to wobble on the runway with the stock game so i decided to download FAR, but the problem still persists. Your previous content has been restored. 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. 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 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. After a successful touchdown, high-speed motion on the runway (let alone uneven ground) can be unstable, causing the aircraft to careen to one side or the other, potentially resulting in loss of a wing and sometimes the entire aircraft. See if there is still a problem when only travelling slowly, say <20m/s. Re-entry heating can destroy parts of your spaceplane, or destroy it entirely. Place your rear wheels/gear in front of the flaps on your wings. However it's huge size can make it tricky to take off from the runway without destroying the engine. I moved the back landing gear to right underneath the COM. The Mk1 fuselage parts only tolerate up to 2000K, while Mk2 fuselages tolerate up to 2500K, and Mk3 fuselages tolerate up to 2700K. - KSP Matt Lowne 527K subscribers 1.3M views 2 years ago I've wanted. - Have enough lift, either by a big wing area or high speed. After placing wheels I always use the rotate gizmo on snap with absolute orientation. They sometimes coincide with ailerons on some, more space-economical, aircraft. 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. Paste as plain text instead, Note: Some high-efficiency rocket engines lose most of their power and efficiency in low atmosphere. [KSP 2] I'm trying really hard to make a Mun capable ship but this rocket . 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. Thanks for everyone trying to help! 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. At that point, the plane could potentially start spinning around as a result of losing the benefit of the gimbal control of the engine. A FedEx cargo plane in Austin nearly landed on a runway where a Southwest flight was preparing to take off. This is for the same reason that you keep your fuel balanced. You can either go with four "LY-O1 Fixed" or a tricycle of two LY-01 near the back and one "LY-05 Steerable" at the front; either is fine for now. Such as not producing lift, which is not what you want with a plane. For your first flight, it may be easiest to ignore yaw altogether and just maneuver by rolling slightly and pitching. Make sure that all of your landing gears are pointing in exactly the same direction. Balanced fuel saves Kerbal lives. I'm making sure that I keep trying to get it up but it just wont go! I just thought my planes were too heavy or not enough control surfaces. Note that a Wheesley or Goliath engine can reverse its thrust to allow rapid deceleration during landing, but these are not recommended for a spaceplane due to being unreasonably heavy and inducing excessive drag when attempting to transition to orbital velocities. Next you need landing gear. 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!). I do add a strut to each wheel out of habit since my earlier versions use to roll, better safe than sorry. T-1 "Dart" engines are unique amongst conventionally-fuelled rocket engines: They have close to the highest efficiency in both vacuum and low atmosphere. everytime i make a powered plane, it always flips over and points backwards after i take off. Works well on small craft. The Kerbal Space Program subreddit. Now imagine what happens like that. You want to get up to get the gear tucked away and reduce drag. One final point to consider is the mass you're planning to store in the fuselage. An altitude set to 18,000 meters tops off at 19,000 meters and drops to 15,700 meters . 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 . The most dangerous part of a spaceplane flight is returning from orbit. Pasted as rich text. However, don't bother going overboard with intakes because your engines will still shut off at high altitudes due to the low air pressure regardless of how many intakes you have. 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. 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. Your link has been automatically embedded. Also pay attention to your fuel balance, especially if you're using several tanks placed in parallel to each other. 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). 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). Angled landing gear create rotational force for whatever reason. The reverse also happens. You could do it the kerbal way by attaching two SRBs to the nose of the plane pointing upwards. 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. Even a small deviation can cause serious instability, making your aircraft bounce and jolt left and right even during takeoff. They could go up to 120 m/s on the runway and still not lift up. I have no problems using Mechjeb to launch rockets into orbit, rendezvousing and docking with other craft. 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. 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). if mounted on not struted part) 2. put your main gear slightly behind center of mass. This is starting to get really frustrating. 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! 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). Keep your nose pointed prograde as you descend through the atmosphere. KSP handling death investigation High Winds Cause Widespread Power Outages Ohio . This allows you to takeoff at lower speeds and on shorter runways, and likewise for landing. https://wiki.kerbalspaceprogram.com/index.php?title=Tutorial:_Your_First_Plane&oldid=103052. If the front landing gear touches down first and has its brakes on, it's going to make the rest of your aircraft pivot around it as it's pressed into the ground. In subsequent missions, you may want to launch with less fuel to cut down on cost and make landing a quicker and easier process. You want an elevon on each set of wings. Just after having taken off, the plane will immediately start rolling to the right, and completely uncontrollably. 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. DO NOT ANGLE THEM! I have built lots of spaceplanes. 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. This aircraft handles smoothly, no matter how you turn, roll and flip this aircraft, it will never lose control. Also avoid the basic fin for the same reason. 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. KSP 2 speculation: I believe terraforming will be a feature of the game. 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. This page was last edited on 14 April 2021, at 01:04. 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! You're going to have a bad time. As the title says, my plane dips and turns to the side, clips its wing on the runway and loses it, does the same on the other side, then crashes and explodes, without even getting airborne. 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. After that, you face the challenge of touching down on the ground and coming to a stop safely without rolling and breaking off a wing or taking a nosedive and blowing your aircraft up on touchdown, or rolling off of the runway and into the ocean. Increasing the number of intakes will not allow you to continue using your jet engines at higher altitudes. This is all right if their high efficiency saves enough fuel, but that may not be the case in small spaceplanes with limited fuel capacity. 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. A control surface with 100% control surface portion will weigh twice as much as a wing with the same lift would weigh. 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. Mk2 aircraft may be able to get away with it, but even then it's often best to space them further out. 1. tilt of the plane. 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. FAR says it would take an Angle of Attack of 24.3 degrees at 119 m/s to generate enough lift to get it to take off. Controllability of a plane is on you. The FedEx plane pulled back up in time to avoid a collision. EDIT: It was the b9 procedural wings. If you plan on either dropping off cargo or picking up cargo and traveling with it, you'll generally want to locate your cargo bay at the middle of your center of gravity.
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