They could go up to 120 m/s on the runway and still not lift up. https://wiki.kerbalspaceprogram.com/index.php?title=Tutorial:_Your_First_Plane&oldid=103052. If your spaceplane is difficult to land when full of fuel but easy to land when empty, then it may be helpful to burn off or transfer out most of the excess fuel before landing to make the aircraft lighter. It is also said that a good landing is one you can walk away from. LV-N "Nerv" nuclear thermal rockets are commonly used on SSTOs for the rocket stage if Rapiers are not used. And at the extreme, producing down force, which I'm sure would cause more gear issues. 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. In vanilla KSP, wings have a predefined lift factor. And also place them further apart. This page was last edited on 14 April 2021, at 01:04. While having the same stock parts as in the VAB, spaceplane design is obviously quite different from pure rocket design. All trademarks are property of their respective owners in the US and other countries. Maybe ;making the tailwheel less stiff would help, too. Powered by Invision Community. See the tutorial below. Espaol - Latinoamrica (Spanish - Latin America), http://forum.kerbalspaceprogram.com/threads/65638-Basic-Airplane-Space-Plane-Aero-Tutorial. My plane tends to wobble on the runway with the stock game so i decided to download FAR, but the problem still persists. 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. 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. This makes design easier, eliminating all concern for balancing jet fuel against rocket fuel. To takeoff and land at low speed, it's helpful to rotate the wings so the leading edge is slightly above the trailing edge. To do this, take a few barrels of your jet fuel, stick them on the back of your aircraft. 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. I am accelerating it to over 200m/s on the runway just to test the stability of those wheels since the faster you go, the more likely the plane will wobble and flip on the runway. As with everything in KSP, experiment, experiment, experiment. 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. 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. if its too far behind plane cannot lift. My first test of the plane parts in KSP2.Like and Subscribe for more Kerbal stuffs!#kerbalspaceprogram #ksp2 #kerbalspaceprogram2 #shorts #spaceplane #nasa Here is the best aircraft I have created to date: Jet Aircraft. Canards and horizontal tail fins should be placed as far towards the front and back of your aircraft as possible, respectively. 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. Upload or insert images from URL. if mounted on not struted part) 2. put your main gear slightly behind center of mass. Just like with rockets, get some courageous Kerbal in the cockpit and let's get started! 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. Powered by Invision Community. A FedEx cargo plane in Austin nearly landed on a runway where a Southwest flight was preparing to take off. This is an important distinction; a plane with great lift rating but without any control surfaces will fly easily but will be almost uncontrollable. Note that no wings will tolerate more than 2400K, so the difference in temperature tolerance between Mk2 and Mk3 fuselages isn't terribly significant. and our 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. But regardless of that, try very hard to let the plane fly itself off the ground without you applying any controls. If you have an account, sign in now to post with your account. When gear is placed, it has just one point of attachment. Now I'll walk you through a basic aircraft; fancy stuff like science equipment can be added later. The FedEx plane pulled back up in time to avoid a collision. 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). 1. make sure your main gear is not wobbling (ie. These have extremely poor temperature tolerance and will almost inevitably break up during atmospheric reentry. Aim to get your speed below 50m/s, and have plenty of water ahead of you; keep the plane level, and pitch up to shed velocity. But, likely guess is your craft is not producing enough lift. 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. While I am not a great plane builder there is a part in the structural (I think it is a pylon?) 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. FOX 56 News Video More Videos 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. So I have played the game for 200 hours and I love it. The only drawback to the reduced friction is reduced steering control, so this setting may need to be adjusted when taxiing to/from a runway, but should otherwise be kept minimal for takeoff and landing. This is good for spaceplanes operating in low-oxygen atmospheres where jet engines can't be used. The tutorial below explains everything very well. 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. A relatively low-drag alternative is to use an inverted cargo bay and some hydraulic cylinders with structural panels as a cargo elevator. 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 just thought my planes were too heavy or not enough control surfaces. . I scoured the entire web for a solution, but found no working solution or at least dont work every time. Mk2 aircraft may be able to get away with it, but even then it's often best to space them further out. Here's a quick installment in to the. Any ideas? However it's huge size can make it tricky to take off from the runway without destroying the engine. Here is your convenient solution to this problem! Do you have new pics after you moved the rear wheels forward? The issue is my plane rolls very sharply to the left any time I pitch up. I checked my planes and I found the problem. 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. This page was last edited on 17 December 2021, at 13:14. 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. 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. 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. mods used are OPT for most of the body and the front canards and tail plane, B9 procedural wings for the wings, and mk4 . Obviously jet engines are air-breathing, so you need to include air intakes in your spaceplane. This is most likely the standard jitterbugging problem. 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. Also avoid the basic fin for the same reason. 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. 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. 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. For more information, please see our All of them had one thing in common though. 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. If your rear wheels are too far back the aircraft will not be able to pivot on the wheels and lift its nose up. This allows you to takeoff at lower speeds and on shorter runways, and likewise for landing. For an example, see the A-10 Warthog's landing gears: link. When you are near the end of the runway, quickly activate then detach them to get the nose pointing up. Saves a lot of headache in wheels placement. - Make sure the landing gear is as close to the center of gravity as possible, just slightly behind it (for nosewheel aircraft). Either put more engines or reduce the amount of rocket fuel. If rear landing gear are strutted together, or braced to a center point, they are less likely to torque in different directions. 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. 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! 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! Valve Corporation. (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. . Your very own tutorial.). So if I start encountering wobble it's time to pull back on the stick and get in the air. - Have enough lift, either by a big wing area or high speed. As such, don't use control surfaces as substitutes for wings, and don't use more control surfaces than you need. However, they are extremely heavy for their power, weighing as much as a conventional rocket nearly 11 times more powerful. To minimize the risk of such a situation, try to land on a large patch of flat open ground approaching a downhill slope. 2022 Take-Two Interactive Software, Inc. I have built lots of spaceplanes. Thanks for all the help. Display as a link instead, i have no idea why this happens please help. They could go up to 120 m/s on the runway and still not lift up. I was attaining high speeds on the runway without getting off the ground, which made the plane yaw back and forth. 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 the lift rating does not mean that the wings will automatically lift a spaceplane into the air when it's moving forward. KSP handling death investigation High Winds Cause Widespread Power Outages Ohio . I have doubled the max stress value for aerodynamics failure in FAR for every category. You can even try refueling it before recovering your spaceplane further increasing your recovering value. Safety note: Disable the brakes on the front landing gear. 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. While all other cargo bays are fine for making spaceplanes, the Mk3 Cargo Ramp produces obscene amounts of drag, which can easily prevent reaching orbital velocities by itself. Slowly pitch up to avoid overheating. This can turn into a fatal scenario if the center of mass gets behind the center of lift and you enter a flat spin. 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 thread is quite old. 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). This would indicate two problems. Your wheels should now have 0 degree angle between them, meaning they are both. 3. angle of the wheels. Ideally, the wings should be tilted upward at an angle about 3-5 from the fuselage for optimal lift-to-drag ratio.[1]. This aircraft can takeoff at just above 50 m/s and can glide for a few minutes without engine. 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. Real planes do this as well. 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. #2 DaSkippa Mar 14, 2014 @ 2:56am as Shkeec said check gear check gear check gear. 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. You can also angle the wings themselves slightly upwards (using WASDQE) in order to make them generate more lift when horizontal. 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. A control surface with 100% control surface portion will weigh twice as much as a wing with the same lift would weigh. [KSP 2] I'm trying really hard to make a Mun capable ship but this rocket . 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.
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