And one other, more remote possibility to check: Where is your plane's center of drag? Building planes is one of the more fun things to do in Kerbal Space Program, and also leads to more science on kerbin and eventually SSTO spaceplanes. So basic, anyone can do it. Keeping it from crashing is usually the hard part. jet engine efficiency in this game is based on built in thrust curves. So thanks for the pointers - I'll take a look (and try to cure my prejudice re canards). 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. Would I be better unlocking more parts and leaving this contract for later? Can I use the spell Immovable Object to create a castle which floats above the clouds? Congratulations! Intriguingly, there is one thing I've found that does prevent the wobble from starting, and that is to use a single engine mounted directly on the back of the fuselage, which prevents using a tail and is ultimately a fairly significant restriction to build around. LTTP again (KSP on hiatus for a bit), but here's an answer anyway. You would need to get down into the 37k-45k zone to aerobrake enough to come down in one orbit. You can pick the main cockpit and rotate the whole craft with it in SPH to see where your CoL will drift. The procedure for a vertical take-off is as follows: The procedure for a short take-off is the same, except that forward jets and hoverjets will both be ON from the start. Any plane needs speed - so you need thrust (usually). Arqade is a question and answer site for passionate videogamers on all platforms. (KSP 1.9.1) Subscribe - http://www.youtube.com/c/MikeAben?sub-confirmation=1 Patreon - https://www.patreon.com/MikeAbenPatreon supporters receive early, ad-free, access to videos, kOS and craft files, and more. Absolute Beginner's Playlist - https://www.youtube.com/playlist?list=PLB3Ia8aQsDKgGHrNZnz2ca8NVuyj7eHXc Craft File - https://drive.google.com/file/d/1cfFBMm4EBhDh8mQ2UuOn9f5DL6jBgM05/view?usp=drivesdk0:00 - Introduction1:42 - Planning our Science Collection3:36 - Starting our Build4:49 - Changing Symmetry Mode6:40 - Adding Fuel8:07 - Adding Jet Engines \u0026 Air Intakes9:10 - Adding Wings \u0026 Elevons10:55 - Adding a Tail12:03 - Understanding Center of Lift16:24 - Understanding Control Surfaces18:31 - Adding Landing Gear22:25 - Summary Making a fuselage. Pasted as rich text. Another way to manage this is to mount your wings above your CoM. First, @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, Hahaha absolutely right, but distinctly less satisfying. The Panther engine can hold 19,000 steady and oscillates around 20,000. They sometimes coincide with ailerons on some, more space-economical, aircraft. You may need to change control authority to a negative value if they bend "the wrong way". The writing is a bit disjointed, because it's been edited and restructured a few times andI'm not a native english speaker. 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. 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. It is only visible to you. Note: Your post will require moderator approval before it will be visible. The Center of Gravity is ALWAYS above Center of Lift. Paint a picture in that little head of yours, imagine that the Mass was in the back, when you stall it, it will ALWAYS fall backwards and. I wrote a post that covers similar topics. I've covered all my bases, as far as I can tell: It seems if I turn off SAS, I can prevent the oscillation from starting as it's initiated by some control input, whether from me or SAS, but then the plane veers off the runway until it hits something. Better still, three screenshots showing side, top, and rear views. A basic tutorial on building a single prop plane. Flight records. November 1, 2018 in KSP1 Tutorials. Keep pitching up as you approach stall speed. Powered by Invision Community. About the landing gear, the best way to stop the weird self steering issue is to increase the spring and damper strength. A V/STOL atmospheric craft built for Duna can drop you on any dime, anywhere on the surface. Such a simple and basic tip, but so unknown throughout KSP. Learn more about Stack Overflow the company, and our products. The BAK Cyclone, delivering a station module to Duna. Because they're fun and educational and you can. RCS will get the job done nicely, and looks cool to boot. - but they were talking about having two intakes/engine. Always look at your aircraft from a 90* angle on the side. Two MacBook Pro with same model number (A1286) but different year. First off, make sure you are using the newest version of Kerbal Space Program, and it is NOT pirated, when you buy it, the devs get helped out. You arent doing anything wrong. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. This page was last edited on 17 December 2021, at 13:14. Mount your rear wheels out on the wings for better stability. 1. Also, excessive use of the rudder usually causes the plane to spin out of control and crash. Jets are good for a certain amount of static thrust but they don't allow quick control of your vertical speed because of their slow spool time. In 5e D&D and Grim Hollow, how does the Specter transformation affect a human PC in regards to the 'undead' characteristics and spells? All three wheels (one steerable in front, two fixed in back) are mounted with angle snapping, symmetrically, Wheels are mounted to the fuselage, rather than to the wings (which flex under load), Center of lift is behind center of mass, and slightly raised, Rear wheels are in front of tail, but not enough to make tail strikes easy. 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. I have also used rocket-powered VTOLs on Duna. if you are making a plane that's going to be pulling stunts or making extreme maneuvers, a stabilizer is pretty important. You can post now and register later. I have not had much success usingonly horizontally oriented intakes - the engines do not have sufficient air flow to generate enough thrust to actually lift the craft. The juno 8-pack in a mk2 bay is my go-to, plus, a single Engine nacelle will provide enough air for them all and fuel is self-contained, making the design easy to scale for larger craft. Also there it's important to place small landing gear after setting up CoL to CoM relation since it's mass is calculated in CoM in SPH/VAB but not counted in flight. We look at the principles behind designing a basic jet. TO achieve the easisest way to balance the fuel tanks i never put usable fuel tank in where i cant move ti easily eg. So, if you're having this problem then. If that all fails, you may try building your plane lighter and with mightier (or just more) engines, so it just doesn't have the time to start misbehaving on the runway before you bring it up in the air. That would oscillate slowly between 16000m and 17000m but was otherwise fully controllable. Because of that if you for example place control surfaces at the front you can make a plane that has CoL behind CoM (like in the picture) unstable because CoL will drift forward past CoM as AoA increases (contrary to your 4th point). You need enough intakes to keep them fed. I've found a few body plans to be especially amenable to conversion to VTOL. Hint:The engine pre-cooler and engine nacelle are fantastic air intakes, and they can be mounted in-line or combined with other elements. If you placed the main wings at the centre of mass and then added the smaller wings behind, this should be correct already. principle. Now, get a pair of winglets, and place them at the front of the plane to get that approximate spacing of COM . So this guide is about atmospheric craft designed to fly by makinguse of lift generated by wings, which can take off and land vertically by use of downward-pointing jets or rockets. I didn't try for 20000m as it probably wouldn't do well. there aren't any aerodynamics when you are a kraken scientist like me. Not so with VTOLs: if the CoM shifts, you're not going to be able to land vertically anymore. @davidalangay all of the wings provide lift, and some of them also act as a control surfaces, its pretty self explanitory, Im having a weird glitch, where whenever I make a plane (I even tried copying your design in this guide, to the T, and it broke too) they spawn, and if it's a big plane will always veer off to the left and be completely unable to turn right, and if it's small, then it'll start rocking side to side and flip over. Regular HTOL aircraft can afford to be a bit sloppy with this because aerodynamic forces will effectively obliterate moderate shifts in CoM -- if your plane gets a bit more tail-happy as the tanks drain it's no problem, as long as your CoM stays ahead of your CoL. Mostly anyway. that being said, one thing I noticed is that you said the whiplash is for SSTOs, this isn't true, it's used for high speed atmospheric flight, it doesn't have a closed cycle mode, so it can't be used to complete an orbital trajectory. Firstly you're going to want to make a short fuselage. This is always my strategy for building planes (although sometimes things go horribly wrong for a different reason.) It only takes a minute to sign up. the front should be close to double the rear gears strength) And Good Guide! Ok, the panther engine is still not good enough. Do you by chance know how much the thrust varies with these small velocity perturbations? Note: Your post will require moderator approval before it will be visible. More air is better. 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. You want to keep the CoL slightly behind the CoM, but not too much to not create torque. How to force Unity Editor/TestRunner to run at full speed when in background? Your plane is almost finished. OK, I have a really pedantic question here: Is it even possible to have a practical VTOL craft without using the unlimited fuel cheat? 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! Things get ugly!!). Ok, you will want to start building. Nothing bad will happen. My first VTOL craft was the Bumblebee, and it's still one of my favourites! First off, make whatever you want, just, start off making sense. For more information, please see our There's no tutorial in KSP that explains plane design to you and this guide could have taken the lead on that. The two engines have been mounted every imaginable way with the same result: Over the wings, on the fuselage, on girder segments, on the wingtips, etc. Even exponential growth can take a while to get going if it starts out microscopic, and Id be fascinated to find someone who could figure out a way of measuring the growth rate. - SF. A VTOLaircraftas discussed here is a craft that's designed to fly aerodynamically, using lift produced by lifting surfaces, but take off and land vertically. For most small-to-normal-sized craft, you should end up with CoL sitting right at the back of the yellow CoM ball.
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