Enable mirror symmetry to save yourself some alignment effort. 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! In vanilla KSP, wings have a predefined lift factor. My Space Plane Keeps Flipping Backwards On The - Dive into anything I've had stability issues in planes where I'd have proper gear setup, balanced weight and lift. In subsequent missions, you may want to launch with less fuel to cut down on cost and make landing a quicker and easier process. It Flips Up And Towards The Opposite Direction. Ailerons to roll your aircraft should be placed as far off to the edges of your wings as possible. For a Mk1-based aircraft, your rear landing gears should not be tightly tucked together on the fuselage. #2 DaSkippa Mar 14, 2014 @ 2:56am as Shkeec said check gear check gear check gear. If rear landing gear are strutted together, or braced to a center point, they are less likely to torque in different directions. 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. In fact, nothing will happen at all, and that's probably bad, so put an air intake on your plane anyway. While I am not a great plane builder there is a part in the structural (I think it is a pylon?) Canards and horizontal tail fins should be placed as far towards the front and back of your aircraft as possible, respectively. 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. And above all: have fun! Similar principles apply when finding suitable landing sites away from the KSC. At that point, the plane could potentially start spinning around as a result of losing the benefit of the gimbal control of the engine. This page was last edited on 14 April 2021, at 01:04. KSP 2 || First Plane Take-off || Kerbal Space Program 2 . It can be helpful to use a slightly taller front landing gear and slightly shorter rear landing gears so that your fuselage points slightly upward on the ground, thereby increasing the angle of attack of your wings while on the ground. As long as you're in space, your spaceplane won't differ from any spacecraft: you will probably want to add batteries and generators to prevent the command pod from running out of power. I have created planes that have landing gears place right under the wing tips but they still won't work. 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. This would indicate two problems. 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. You main problem is your landing gear. As with everything in KSP, experiment, experiment, experiment. 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. All trademarks are property of their respective owners in the US and other countries. 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. I have found a solution to my problem. 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. Any ideas? You can also angle the wings themselves slightly upwards (using WASDQE) in order to make them generate more lift when horizontal. https://forum.kerbalspaceprogram.com/index.php?/topic/124380-wing-lift-amp-wing-lift-to-drag-ratio-charts/, https://wiki.kerbalspaceprogram.com/index.php?title=Tutorial:_Spaceplane_basics&oldid=100619. 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). 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? if its too far behind plane cannot lift. FAA investigating 'close call' between planes at Boston airport Note: This tutorial was last updated for version 1.7.2. However it's huge size can make it tricky to take off from the runway without destroying the engine. That, combined with a Unity joint bug, makes your plane bounce. Such flight involves lift-induced drag, but reduces the total thrust required to traverse a distance at a given speed. 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. 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? Beyond that, you're going to get some wobble once you get close to take off speed. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. This aircraft can takeoff at just above 50 m/s and can glide for a few minutes without engine. KSP Quick Guides: Takeoff Troubleshooting Stock v.22 - YouTube Then this tutorial is for you. 2022 Take-Two Interactive Software, Inc. http://kerbalspaceprogram.com/forum/showthread.php/13851-The-woes-of-building-a-space-plane?highlight=woes+spaceplane. Another trick is to move the rear landing gear forward, closer to the center of gravity. 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. They sometimes coincide with elevators. Your aircraft might just be too heavy - there might not be enough wing lift for it to take off the ground. http://www.youtube.com/user/Cruzanak?. 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. Do you have new pics after you moved the rear wheels forward? 3. make sure your center of mass is slightly in front of center of lift force. This helped immensely and if you haven't been doing this already, do it. 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. Paste as plain text instead, Temperature tolerance is the primary consideration for fuselage choice. 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. Even a small deviation can cause serious instability, making your aircraft bounce and jolt left and right even during takeoff. I do add a strut to each wheel out of habit since my earlier versions use to roll, better safe than sorry. KSP Stock Space Shuttle by _ForgeUser18393701. 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. The issue is my plane rolls very sharply to the left any time I pitch up. S5 moon rocket by lightbreaker_64. 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. 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. First try speed over land reached over 210 m/s before flipping in the last second. Create an account to follow your favorite communities and start taking part in conversations. If you pull up and cause the tailwheel etiher to hit the ground if it was already up or push it into the ground if it was still in contact, you will create bounciness. Tutorial: Your First Plane - Kerbal Space Program Wiki 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. To minimize the risk of such a situation, try to land on a large patch of flat open ground approaching a downhill slope. Be aware that landing on water is an option if your spaceplane can fly level at less than ~40-50 m/s. Yours is a very light plane, and the standard suspension settings are for a medium heavy plane -- so your suspension is too stiff. Why does my plane roll left on takeoff : r/KerbalSpaceProgram - reddit Your previous content has been restored. Just like with rockets, get some courageous Kerbal in the cockpit and let's get started! 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. Even if you can takeoff, landing will usually destroy tat aircraft so survival rate on an aircraft for a typical kerbal is nearly zero. For heavy rockets, it might be required to use structure to space the gears away from the body to allow more pitch. 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!). Plane wobble during takeoff - Kerbal Space Program Forums Also avoid the basic fin for the same reason. See if there is still a problem when only travelling slowly, say <20m/s. The most dangerous part of a spaceplane flight is returning from orbit. . Heavy Cargo Space Plane SSTO Download. I was attaining high speeds on the runway without getting off the ground, which made the plane yaw back and forth. 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. One idea I haven't noticed here yet: "wire up" the landing gear, with strut connectors. I was wrong. One FL-T100 tank can't power any rocket into space, yet a Shock Cone Intake, a Mk1 Inline Cockpit, a half-filled FL-T100 and a J-X4 "Whiplash" Turbo Ramjet Engine aimed in the general direction of "up" will let you laugh your way past the 70km mark at nearly 1200m/s. After externsive testing and bloodpressure rise, results: it doesnt matter where you place the wheels, as long as they are not angled on the X (nose-tail) axis. Note that the lift rating does not mean that the wings will automatically lift a spaceplane into the air when it's moving forward. If you placed the main wings at the centre of mass and then added the smaller wings behind, this should be correct already. 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. 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. 4. 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. 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? my planes keep flipping backwards on take off : r/KerbalAcademy - reddit But, likely guess is your craft is not producing enough lift. LV-N has less than 25% of its full power at Kerbin sea level. 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. I also used Intake build aid to balance the intakes. As lift increases you remove some strain on the gear, however you've just increased the amount of sag. This is most likely the standard jitterbugging problem. However, it's not a matter of "atmosphere or not", just a matter of air pressure which decreases rapidly with altitude. 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. 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. 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? You could do it the kerbal way by attaching two SRBs to the nose of the plane pointing upwards. Here is your convenient solution to this problem! I removed them and it works fine now. All trademarks are property of their respective owners in the US and other countries. Please consider starting a new thread rather than reviving this one. @TheEnvironmentalist There is one more method I'm sure would work in your case, although I didn't write about it because I think it's cheesy and wouldn't solve the root problem. 3. angle of the wheels. Also, excessive use of the rudder usually causes the plane to spin out of control and crash. * Gear not mounted to parts that will flex (e.g. It's said that takeoffs are optional but landings are mandatory. 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. I have built lots of spaceplanes. (For test purposes, all aircraft are not pitched up and SAS is turned off. Espaol - Latinoamrica (Spanish - Latin America), http://forum.kerbalspaceprogram.com/threads/65638-Basic-Airplane-Space-Plane-Aero-Tutorial. Ideally, the wings should be tilted upward at an angle about 3-5 from the fuselage for optimal lift-to-drag ratio.[1]. http://kerbalspaceprogram.com, Press J to jump to the feed. 2022 Take-Two Interactive Software, Inc. I scoured the entire web for a solution, but found no working solution or at least dont work every time. Cookie Notice If you have an account, sign in now to post with your account. This page was last edited on 19 February 2020, at 07:08. Wow, if you need 200 m\s to take off, you should think about adding more lift. This ensures that your aircraft will go up once it achieves a high enough speed, and also helps with placing ailerons. 67K subscribers in the KerbalAcademy community. Now for the engines. symmetry building makes them face slightly towards (or away from) each other, with wobbly results. 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. 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. Need to move them up. Although I usually only need 50 m/s for most planes to wobble out of control. Remember how you want your center of lift/drag to be behind the center of gravity? Display as a link instead, This can easily cause you to crash on landing. Obviously jet engines are air-breathing, so you need to include air intakes in your spaceplane. This thread is quite old. You can deploy your chutes just prior to touchdown for rapid deceleration. EDIT: So, I set the front landing gear spring and damper to 0.5, and also set the tail gear spring and damper to 2, and the problem was fixed! When your jet engines stop working, it is time to ignite the old, reliable liquid fuel engine. [KSP] - Heavy Seaplane Take-off, Water-landing and Re-take-off! If your rear wheels are too far back the aircraft will not be able to pivot on the wheels and lift its nose up. Display as a link instead, 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). For more information, please see our 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. If you have an account, sign in now to post with your account. Firstly, inadequate air intakes for the number and type of engines you're using (causing some engines to shut down before others). 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. 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. 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. FOX 56 News Video More Videos They are able to operate at higher altitudes and can even continue operating in a vacuum by switching to a rocket mode. Upload or insert images from URL. This is generally an issue of not spacing your landing gears out far enough apart. Place your rear wheels/gear in front of the flaps on your wings. Tell ya what, I'm gonna try to recreate that thing in my sandbox and see what I get. As such, don't use control surfaces as substitutes for wings, and don't use more control surfaces than you need. A good example of this is at the KSC runway when landing on a 90 degree bearing. Balanced fuel saves Kerbal lives. All I have are the parts from the Aerodynamics tech and the gear bay (wheels). Is there a way to rectify this problem. Mk2 aircraft may be able to get away with it, but even then it's often best to space them further out. Note: Your post will require moderator approval before it will be visible. 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. Here is your convenient solution to this problem! So I started a new career file after not really playing for a long time and I'm now at the point where I just dropped 45 Science to unlocked Aviation to get some of the plane parts that I need. Finally you need to make sure it's all balanced, this means the centre of lift marker needs to be very slightly behind the centre of mass marker. 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. Thanks for everyone trying to help! Keep your nose pointed prograde as you descend through the atmosphere. You want an elevon on each set of wings. 6.4K Downloads Updated Jun 7, 2017 Created Jun 7, 2017. . What you ought to be using is the Swept Wings and Elevon 1s instead of the Delta-Deluxe Winglets. Angled landing gear create rotational force for whatever reason. Press question mark to learn the rest of the keyboard shortcuts. I thought after buying this I would have all the parts I need to build a small plane that can at least get off the ground, but I'm having trouble. As such, you will need various control surfaces. How do I fix this? 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. For myself, it always was the position of landing gear in terms of pitch. 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. Install S5 moon rocket By lightbreaker_64. 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: Your post will require moderator approval before it will be visible. Privacy Policy. All lift-rating means is that the wing section will resist motion perpendicular to its plane. To minimize drag, vertical tail fins can be kept minimal, since aircraft can be maneuvered adequately by roll and pitch alone. 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. 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. This is starting to get really frustrating. DO NOT ANGLE THEM! 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.

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