This is an important distinction; a plane with great lift rating but without any control surfaces will fly easily but will be almost uncontrollable. Unstable Aircraft: "FAR Firehound" (Stock). 2022 Take-Two Interactive Software, Inc. Wow, if you need 200 m\s to take off, you should think about adding more lift. if its too far behind plane cannot lift. 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. I am definitely aware that there are multiple reasons as to why the plane flips. Go on, and take the plane capsule which looks like a converted fuel storage device. To do this, take a few barrels of your jet fuel, stick them on the back of your aircraft. The design I used is similar to what I normally used for planes but I had to swap out parts and make it smaller to compensate for Career mode changes. Quick context, I am a software engineer. Here's a quick installment in to the. It is advised to place your control surfaces as far from your center of mass as possible. 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. If your Mk3 design jam-packed full of heavy gear can't seem to survive reentry, one option might be to reduce the payload a bit. 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. 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. and our To slow down faster, you can increase the braking strength of your rear wheels. It doesn't really matter if you angle them or not, there is not a single configuration for the wheels that can work on all plane parts. As with everything in KSP, experiment, experiment, experiment. Nothing bad will happen. You probably won't have much luck landing the fuselage intact if your Mk3 plane gets its wings scorched off on reentry. 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. 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? 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. if mounted on not struted part). Valve Corporation. 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. Your previous content has been restored. Display as a link instead, (However, it must be noted that it is bad practice to use ailerons as elevators since it makes it hard to control the aircraft), The rudder moves the tip of the plane left and right; it is rarely used, since it is hard to put it both up and down due to the possibility of hitting the ground. If you can maintain level flight at about 30-40 m/s, you should be able to perform an ocean landing if needed. For this to happen, I'm assuming you're using rocket fuel tanks. And above all: have fun! 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). If you keep all of the fuel in the front, you may find that your center of mass drifts backwards as your fuel drains. One idea I haven't noticed here yet: "wire up" the landing gear, with strut connectors. This aircraft can takeoff at just above 50 m/s and can glide for a few minutes without engine. 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). Remember how you want your center of lift/drag to be behind the center of gravity? Now put on center of mass and center of lift view, and move the delta wings until the center of lift is slightly behind of the center of mass - not in front, otherwise your aircraft will be able to easily flip out of control. The centre of mass was between the 2 landing gears. Try disabling friction control with on the front landing gears. Note: Your post will require moderator approval before it will be visible. This plane will be able to take off, travel somewhere, perform a crew report, and then land. 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). mods used are OPT for most of the body and the front canards and tail plane, B9 procedural wings for the wings, and mk4 . When your spaceplane rolls shortly after touchdown, veers to one side and then explodes on the runway, you have a problem with landing stability. I just thought my planes were too heavy or not enough control surfaces. 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? See if there is still a problem when only travelling slowly, say <20m/s. So if I start encountering wobble it's time to pull back on the stick and get in the air. Now stick a jet engine on the back, and don't forget to put an air intake or other air-sucking device (you can find them in aerodynamics) on the airplane. FOX 56 News Video More Videos Another trick is to move the rear landing gear forward, closer to the center of gravity. Note that no wings will tolerate more than 2400K, so the difference in temperature tolerance between Mk2 and Mk3 fuselages isn't terribly significant. * Unlock steering and disable brakes on front gear. 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. Clear editor. They sometimes coincide with elevators. Subscribe! 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. Symmetry placement should give you perfect symmetry, as far as the game is concerned. 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. For myself, it always was the position of landing gear in terms of pitch. Create an account to follow your favorite communities and start taking part in conversations. I scoured the entire web for a solution, but found no working solution or at least dont work every time. An altitude set to 18,000 meters tops off at 19,000 meters and drops to 15,700 meters . I moved the back landing gear to right underneath the COM. 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. 1. make sure your main gear is not wobbling (ie. First thing you're going to want to do in the SPH is turn on your centre of mass indicator (this is the point that the plane will rotate around when rolling, pitching, or yawing) and your centre of lift indicator (the Aerodynamic Overlay). 5.whether the body you anchor the landing gears to are firm. This tutorial will help you with the basics of spaceplane flight, and will help you avoid the most common errors that could ruin your day as a spaceplane pilot! Be aware that landing on water is an option if your spaceplane can fly level at less than ~40-50 m/s. 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. But, likely guess is your craft is not producing enough lift. Controllability of a plane is on you. 6.4K Downloads Updated Jun 7, 2017 Created Jun 7, 2017. . I have also thought about a wider base. 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. You can deploy your chutes just prior to touchdown for rapid deceleration. 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. 3. make sure your center of mass is slightly in front of center of lift force. 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. Note: Your post will require moderator approval before it will be visible. 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 . In subsequent missions, you may want to launch with less fuel to cut down on cost and make landing a quicker and easier process. In vanilla KSP, wings have a predefined lift factor. - Make sure the landing gear is as close to the center of gravity as possible, just slightly behind it (for nosewheel aircraft). Balanced fuel saves Kerbal lives. Powered by Invision Community. Tips aplenty in this thread: http://kerbalspaceprogram.com/forum/showthread.php/13851-The-woes-of-building-a-space-plane?highlight=woes+spaceplane It taught me everything I know, except for the stuff I learned elsewhere. For heavy rockets, it might be required to use structure to space the gears away from the body to allow more pitch. 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. 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. Such as not producing lift, which is not what you want with a plane. KSP v.22 Takeoff Troubleshooting Guide/Tutorial Lots of info to help get your plane off the runway! Check out the following guide for some good info: http://forum.kerbalspaceprogram.com/threads/52080-Basic-Aircraft-Design-Explained-Simply-With-Pictures Also, lift is usually placed in the middle-to-back of the wing, depending on the shape. The rudder is mostly used when landing and when attempting to line up a shot (in a fighter plane). 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. 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. But be careful and don't crash it! 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. Suggest a Correction Copyright 2023 Nexstar Media Inc. All rights reserved. 4. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. - SF. 2. Here is your convenient solution to this problem! 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. As you would expect, spaceplanes need wings: they have various shapes and dimensions, and they differ basically in lift rating: you will want to have enough lift to keep your fuselage approximately prograde during your ascent to orbit. 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. As lift increases you remove some strain on the gear, however you've just increased the amount of sag. However, I want to place my wheels where i want to and not only on X parallel surfaces. You want an elevon on each set of wings. If you can give a craft file and a mod list I could take a look. Then you want to put something called a "Small Circular Intake" on the front of the tank, and a "J-20 Juno" engine on the back of the tank.

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