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T-1 "Dart" engines are unique amongst conventionally-fuelled rocket engines: They have close to the highest efficiency in both vacuum and low atmosphere. 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 helps to keep the performance of your spaceplane stable with any amount of fuel. For spaceplanes, avoid the FAT parts (wing, tail fin, and control surface). It is also common to add an Inline Clamp-O-Tron, which, unlike all the other docking ports, can be placed in the middle of the spacecraft (a handy solution, since there is not much space at either end of the craft) to allow your plane to dock with space stations or other spacecrafts. as Shkeec said check gear check gear check gear. Press question mark to learn the rest of the keyboard shortcuts. LV-N "Nerv" nuclear thermal rockets are commonly used on SSTOs for the rocket stage if Rapiers are not used. 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. When I Start Why Engine, It Goes Straight But As Soon As I Takeoff. 3. angle of the wheels. Nothing bad will happen. my center of lift is always slightly infront of my mass. 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. They could go up to 120 m/s on the runway and still not lift up. Take the large delta wings and place them on the aircraft. They are able to operate at higher altitudes and can even continue operating in a vacuum by switching to a rocket mode. Thanks for everyone trying to help! To takeoff and land at low speed, it's helpful to rotate the wings so the leading edge is slightly above the trailing edge. 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. And at the extreme, producing down force, which I'm sure would cause more gear issues. This can easily cause you to crash on landing. Set up for a long glide path, and watch rate of climb indicator at top of screen, aim for -5 m/s. A plane is any craft which flies horizontally in an atmosphere utilizing lift primarily generated by wings, winglets, or control surfaces. Necessary for heavy/long spaceplane. Your link has been automatically embedded. 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. I just built a plane but when i launch it just slides and spins slowly to the right, any ideas on why this is happening? 1. #2 DaSkippa Mar 14, 2014 @ 2:56am as Shkeec said check gear check gear check gear. The same principle applies here. Control surfaces are heavier than wings. 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. You can resolve the emergency by transferring fuel from rear fuel tanks to forward fuel tanks, but you should alter your design to bring your wings further back to prevent such incidents in the future. i have no idea why this happens please help. To minimize the risk of such a situation, try to land on a large patch of flat open ground approaching a downhill slope. 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. Controllability of a plane is on you. Descending greater than -10 m/s usually makes a mess. The issue is my plane rolls very sharply to the left any time I pitch up. Plane spins/lurches to the side during takeoff? I found biggest cause of this as well as not being able to possibly correct is having sas on during takeoff, make sure that is off during take off and should find problem is less likely to occur, but I too struggle to make working space planes even when center of lift, mass, thrust are all as needed. Install S5 moon rocket By lightbreaker_64. This page was last edited on 17 December 2021, at 13:14. Aircraft in this game is almost unfeasible, especially in career mode, you will lose all your money before you finally design an aircraft that can even takeoff. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. Suggest a Correction Copyright 2023 Nexstar Media Inc. All rights reserved. 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. 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. 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. Easier just to bring the rear wheels closer as well as a in line reacton wheel. This can turn into a fatal scenario if the center of mass gets behind the center of lift and you enter a flat spin. Plane bouncing on takeoff - Gameplay Questions and Tutorials - Kerbal Space Program Forums Hello, I am having a small problem with a plane I have built. Works well on small craft. 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. My plane usually take off at a little over 120m/s. 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. They sometimes coincide with elevators. When your spaceplane rolls shortly after touchdown, veers to one side and then explodes on the runway, you have a problem with landing stability. The Mk1 fuselage parts only tolerate up to 2000K, while Mk2 fuselages tolerate up to 2500K, and Mk3 fuselages tolerate up to 2700K. The issue is my plane rolls very sharply to the left any time I pitch up. 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. 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. Now for the engines. Upload or insert images from URL. 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. 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. They sometimes coincide with ailerons on some, more space-economical, aircraft. 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. 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. Consequently, atmospheric reentry is less dangerous with a Mk2 or Mk3 fuselage, compared to reentry with Mk1 fuselages. ), 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". Here is an example of landing gear place on a complex geometric surface: Unstable plane Rear landing gears only seems to work on cylindrical fuselage, if you place them on a fuselage intake or anything other than a cylinder, the wheels can behave strangely. 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. You can post now and register later. As with everything in KSP, experiment, experiment, experiment. Such as not producing lift, which is not what you want with a plane. And above all: have fun! However, it's not a matter of "atmosphere or not", just a matter of air pressure which decreases rapidly with altitude. Having said all that, these are the issues you must contend with. 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. if mounted on not struted part). Thermal turbulence, caused by convection, happens below clouds and typically only impacts planes during takeoff and landing. You can also angle the wings themselves slightly upwards (using WASDQE) in order to make them generate more lift when horizontal. Next you need landing gear. 2022 Take-Two Interactive Software, Inc. Your previous content has been restored. 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? I moved the back landing gear to right underneath the COM. Just after having taken off, the plane will immediately start rolling to the right, and completely uncontrollably. 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. Thank you and happy landings. Throttle up to full, activate SAS, stage to start the engine (you'll only have one stage here), and start rolling (or sliding) down the runway! If rear landing gear are strutted together, or braced to a center point, they are less likely to torque in different directions. 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). It's said that takeoffs are optional but landings are mandatory. 6.4K Downloads Updated Jun 7, 2017 Created Jun 7, 2017. . (Yes, you personally, you lucky thing! I have created planes that have landing gears place right under the wing tips but they still won't work. What you ought to be using is the Swept Wings and Elevon 1s instead of the Delta-Deluxe Winglets. It is due to the spinning up of the engines. FOX 56 News Video More Videos 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. When your jet engines stop working, it is time to ignite the old, reliable liquid fuel engine. This is good for spaceplanes operating in low-oxygen atmospheres where jet engines can't be used. Landing is hard. You should have something called an "Elevon 1"; this will be the moving part for your wings. My first test of the plane parts in KSP2.Like and Subscribe for more Kerbal stuffs!#kerbalspaceprogram #ksp2 #kerbalspaceprogram2 #shorts #spaceplane #nasa 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. 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. Pasted as rich text. 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. Note that dropping off cargo from the back with a Mk3 Cargo Ramp is bad for more than one reason. All of them had one thing in common though. It's strongly recommended to keep your landing gears well-spaced from each other to ensure that the aircraft will be difficult to roll into a collision. . Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. Your previous content has been restored. 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). All of these problems can be exacerbated or reduced by adjusting the amount of fuel in your tanks during landing. It helps to have a center of gravity which is close to your engines so that the landing gears can be close to both. 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. Hopefully this gets you your first aircraft that can take off and land, which is the biggest hurdle to being able to make KSP aircraft. 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. All trademarks are property of their respective owners in the US and other countries. 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. 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. This aircraft can takeoff at just above 50 m/s and can glide for a few minutes without engine. I was wrong. An alternative is making sure you have complete control of the craft. Consider placing your rear landing gears close to the spaceplane's center of mass, but be careful to avoid an engine collision with the runway. Privacy Policy. Heavy Cargo Space Plane SSTO Download. Tell ya what, I'm gonna try to recreate that thing in my sandbox and see what I get. 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. Then at the top, we'll put one tail fin, centred on the end of the fuselage. Hit the launch button and watch your magnificent bird fly! Unstable Aircraft: "FAR Firehound" (Stock). 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. KSP 2 speculation: I believe terraforming will be a feature of the game. Or adding a RATO boosters. I'm trying to do some of the surveying and taxi-ing missions because now that's all the games giving me but flying with a regular rockets just not working for me. 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. Espaol - Latinoamrica (Spanish - Latin America), http://steamcommunity.com/sharedfiles/filedetails/?id=484107795, http://steamcommunity.com/sharedfiles/filedetails/?id=484107807, http://steamcommunity.com/sharedfiles/filedetails/?id=484107735, http://steamcommunity.com/sharedfiles/filedetails/?id=484107761, http://steamcommunity.com/sharedfiles/filedetails/?id=484119427, http://forum.kerbalspaceprogram.com/threads/52080-Basic-Aircraft-Design-Explained-Simply-With-Pictures, http://steamcommunity.com/sharedfiles/filedetails/?id=484137556, http://images.akamai.steamusercontent.com/ugc/443953434412162923/42B3BB54A6A524CCC2E5C102AD88C8E521790F55/. Another trick is to move the rear landing gear forward, closer to the center of gravity. The problem could be due to several issues. This is an important distinction; a plane with great lift rating but without any control surfaces will fly easily but will be almost uncontrollable. symmetry building makes them face slightly towards (or away from) each other, with wobbly results. Besides the good advice others have given, I would also be very careful with that little tailwheel. "Type E" is the smallest you should have, and you want a set of those connected at the back of the fuselage. The Kerbal Space Program subreddit. Cookie Notice Note: This tutorial was last updated for version 1.7.2. 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. Symmetry placement should give you perfect symmetry, as far as the game is concerned. Paste as plain text instead, mods used are OPT for most of the body and the front canards and tail plane, B9 procedural wings for the wings, and mk4 . It is advised to place your control surfaces as far from your center of mass as possible. 200 m/s runway stability just doesn't seem to have a worthwhile purpose to me, and is inducing counter productive engineering challenges. Center of Mass and Center of Lift are the usual causes of instability. 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. 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. Note that as you fly higher the air intakes will become less effective and you may come to a point when the engines will shut down due to the lack of air. At that point, the plane could potentially start spinning around as a result of losing the benefit of the gimbal control of the engine. 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! If you have an account, sign in now to post with your account. I removed them and it works fine now. 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. 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. 5.whether the body you anchor the landing gears to are firm. Landing also often requires rapid deceleration to avoid running off the end of the runway or crashing into a slope when landing on open terrain. A control surface with 100% control surface portion will weigh twice as much as a wing with the same lift would weigh. 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. 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. Heavy transport seaplane inspired to the Soviet Beriev A-40 Albatros which also appears in Evangelion 2.0! How wide is the base. That said, parachutes are an exceedingly effective means of reducing your stopping distance. In an aircraft with two or more engines, this can potentially cause you to enter a flat spin which can be unrecoverable if your center of mass is behind your center of lift. I was wrong. Note: The large delta wing will ensure you won't backflip. You need to make sure that the Orange axis on the rotate sphere is parallel to your, nose-tail axis. I see absolutely no need to be traveling that fast down the runway. 2022 Take-Two Interactive Software, Inc. http://kerbalspaceprogram.com/forum/showthread.php/13851-The-woes-of-building-a-space-plane?highlight=woes+spaceplane. This material may not be published, broadcast, rewritten, or redistributed. 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. 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. Hello, I am having a small problem with a plane I have built. When dealing with high-speed landings, you may touch down too quickly and cause the front of the plane to smack into the runway. When your altitude reaches 35km, start pulling up gently. So I have played the game for 200 hours and I love it. 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. 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. - Make sure the landing gear is as close to the center of gravity as possible, just slightly behind it (for nosewheel aircraft). Note: Your post will require moderator approval before it will be visible. You probably won't have much luck landing the fuselage intact if your Mk3 plane gets its wings scorched off on reentry. Beyond that, you're going to get some wobble once you get close to take off speed. This thread is quite old. 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. 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? 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). 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. Temperature tolerance is the primary consideration for fuselage choice. They all had landing gear placed at the front and at the back. 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. I just thought my planes were too heavy or not enough control surfaces. Similar principles apply when finding suitable landing sites away from the KSC. I have built lots of spaceplanes. This ensures that your aircraft will go up once it achieves a high enough speed, and also helps with placing ailerons. Powered by Invision Community. It Flips Up And Towards The Opposite Direction. 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! As such, you may want to line all forward Mk1 radial nodes on your aircraft with shock cones, if possible. Any plane needs speed - so you need thrust (usually). I started investigating why this was happening. Go on, and take the plane capsule which looks like a converted fuel storage device. All rights reserved. Keep your nose pointed prograde as you descend through the atmosphere. Valve Corporation. 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. If you can maintain level flight at about 30-40 m/s, you should be able to perform an ocean landing if needed. 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. They all had to use the runway drop to take off. If you can give a craft file and a mod list I could take a look. This allows you to takeoff at lower speeds and on shorter runways, and likewise for landing. my planes keep flipping backwards on take off . All of them had one thing in common though. Here, the. 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! Your aircraft might just be too heavy - there might not be enough wing lift for it to take off the ground. Place your rear wheels/gear in front of the flaps on your wings. Be warned that if you do not provide sufficient air intakes for the engines you've placed, you may find that some of your engines shut down before others. But also check to make sure that your wheels are placed symmetrically and your engines are aligned properly. This thread is archived . (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. You could do it the kerbal way by attaching two SRBs to the nose of the plane pointing upwards. Your very own tutorial.). It's a prolem enough I have sever differen gear subassemblies that are stable (un wobbly) I can then position depending on COM. Please consider starting a new thread rather than reviving this one. A good example of this is at the KSC runway when landing on a 90 degree bearing. The reverse also happens. Make sure that all of your landing gears are pointing in exactly the same direction. Basic structure Firstly you're going to want to make a short fuselage. As such, don't use control surfaces as substitutes for wings, and don't use more control surfaces than you need. Mods needed for this aircraft to work: Procedural wings, Adjustable Landing Gear, FAR. This is either a collider or design issue, if the craft doesn't have enough lift initially to get off the ground it will bounce a bit before taking off. For heavy rockets, it might be required to use structure to space the gears away from the body to allow more pitch. Otherwise, you can either shift your wings till it's right (though this may crowd them near the back), or you can very slightly rotate the big wings so they're slightly higher near the front of the plane. Check out the following guide for some good info: Your wheel base is the problem. One final point to consider is the mass you're planning to store in the fuselage. 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. Flying a Space Station through a GAS GIANT! For all your gaming related, space exploration needs. KSP Stock Space Shuttle by _ForgeUser18393701. 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). 32.5K Downloads Updated Dec 11, 2014 Created Dec 11, 2014. The plane is clearly unstable.