- Make sure you have enough control authority to lift the nose up. However, they do take a conventional mix of fuel and oxidizer, and thus require much more fuel mass than jet engines or LV-N Nerv. 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. Such flight involves lift-induced drag, but reduces the total thrust required to traverse a distance at a given speed. If there is, I would have found it long ago. If you've been able to successfully re-enter on previous low orbit test runs, you should be able to use this method to achieve similar rates of success once you've slowed down sufficiently. Those and the fixed main gear are NOTORIOUSLY bouncy. This page was last edited on 14 April 2021, at 01:04. 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. Although I usually only need 50 m/s for most planes to wobble out of control. Obviously jet engines are air-breathing, so you need to include air intakes in your spaceplane. Besides the good advice others have given, I would also be very careful with that little tailwheel. 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. The plane is clearly unstable. 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. While having the same stock parts as in the VAB, spaceplane design is obviously quite different from pure rocket design. 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 center of Kerbin than the middle (because it's totally flat), the runway is a valley from a gravitational frame of reference. Note: Some high-efficiency rocket engines lose most of their power and efficiency in low atmosphere. Then at the top, we'll put one tail fin, centred on the end of the fuselage. The FedEx plane pulled back up in time to avoid a collision. Reddit and its partners use cookies and similar technologies to provide you with a better experience. They all had to use the runway drop to take off. KSP 2 speculation: I believe terraforming will be a feature of the game. However, it's not a matter of "atmosphere or not", just a matter of air pressure which decreases rapidly with altitude. And also place them further apart. Wow, if you need 200 m\s to take off, you should think about adding more lift. Re-entry heating can destroy parts of your spaceplane, or destroy it entirely. 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. All rights reserved. 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. [KSP 2] I'm trying really hard to make a Mun capable ship but this rocket . 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. 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. All trademarks are property of their respective owners in the US and other countries. When your spaceplane rolls shortly after touchdown, veers to one side and then explodes on the runway, you have a problem with landing stability. 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. 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? There are several forces in Kerbal Space Program which have an effect on the flight characteristics of SSTO craft. S5 moon rocket by lightbreaker_64. One idea I haven't noticed here yet: "wire up" the landing gear, with strut connectors. What you ought to be using is the Swept Wings and Elevon 1s instead of the Delta-Deluxe Winglets. An altitude set to 18,000 meters tops off at 19,000 meters and drops to 15,700 meters . For your first flight, it may be easiest to ignore yaw altogether and just maneuver by rolling slightly and pitching. But be careful and don't crash it! if mounted on not struted part). This material may not be published, broadcast, rewritten, or redistributed. 2022 Take-Two Interactive Software, Inc. 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. 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. Plane rolls uncontrollably on take-off : r/KerbalSpaceProgram The centre of mass was between the 2 landing gears. Install S5 moon rocket By lightbreaker_64. https://wiki.kerbalspaceprogram.com/index.php?title=Tutorial:_Basic_Plane_Design&oldid=97453, In the front of the plane - In this position, the control surfaces are also known as , In the back of the plane, on the tail - The most usual position; usually, close to the rudder. Here is your convenient solution to this problem! 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. For a Mk1-based aircraft, your rear landing gears should not be tightly tucked together on the fuselage. To do this, take a few barrels of your jet fuel, stick them on the back of your aircraft. 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. It is due to the spinning up of the engines. You can post now and register later. So if I start encountering wobble it's time to pull back on the stick and get in the air. Subscribe! This is good for spaceplanes operating in low-oxygen atmospheres where jet engines can't be used. To minimize drag, vertical tail fins can be kept minimal, since aircraft can be maneuvered adequately by roll and pitch alone. In fact, nothing will happen at all, and that's probably bad, so put an air intake on your plane anyway. So I have played the game for 200 hours and I love it. Here's a quick installment in to the. My Space Plane Keeps Flipping Backwards On The - Dive into anything This helped immensely and if you haven't been doing this already, do it. When flying straight the plane is pretty stable but pitching up causes a sharp roll and I cant figure out why. 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. Tutorial:Aeris 4A mission - Kerbal Space Program Wiki Also, lift is usually placed in the middle-to-back of the wing, depending on the shape. 1. make sure your main gear is not wobbling (ie. A plane is any craft which flies horizontally in an atmosphere utilizing lift primarily generated by wings, winglets, or control surfaces. This thread is quite old. 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. ), 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". and our 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. I have built lots of spaceplanes. 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. All rights reserved. This thread is quite old. When your jet engines stop working, it is time to ignite the old, reliable liquid fuel engine. 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. Also avoid the basic fin for the same reason. How wide is the base. I wanted to develop a plane to check how are the aerodynamics physics working, and went back to the KSC VAB to design a little plane. Remember how you want your center of lift/drag to be behind the center of gravity? Temperature tolerance is the primary consideration for fuselage choice. Mechjeb Spaceplane Guidance. Basic structure Firstly you're going to want to make a short fuselage. KSP handling death investigation High Winds Cause Widespread Power Outages Ohio . I'm making sure that I keep trying to get it up but it just wont go! I have doubled the max stress value for aerodynamics failure in FAR for every category. . 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. 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 . You can post now and register later. How to keep an airplane stable on the runway in Kerbal Space - Arqade
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