Information Changelog Stats Plane - Kerbal Space Program Wiki Display as a link instead, You can do that by right-clicking the engine and clicking "Toggle Mode." (Disclaimer: I've never used FAR myself; all of the above is based on my experience with stock aerodynamics. Build a plane or rocket for Kerbal high altitudes - Arqade Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The X-37 is operated by the United States Space Force for orbital spaceflight missions intended to demonstrate reusable space technologies. Why do many companies reject expired SSL certificates as bugs in bug bounties? @SaintWacko's advice is probably the most practical. That's all true, but just read the OP: hypersonic appears to be completely out of the question. If you have an account, sign in now to post with your account. Proceed with caution. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. at the very least, you'd need the panther, that'll get you over 16k easily, well to 25k. That would argue for going as high as possible, as slow as possible, but apart from drag you also have to fight gravity. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. It's Kerbal Space Program v.22! I looked into the .cfg files and there are no special properties allocated to them. ksp high altitude plane. Very cool. The U-2 is probably the highest altitude aircraft still flying. 2022 Take-Two Interactive Software, Inc. From my observations I can say that "Efficiency" is not a good indicator of how well your engine performs. Tutorial: Making the AI fly | BDArmory Wikia | Fandom It only takes a minute to sign up. So if you want to make a plane go as fast as possible, you want to minimise both angle of attack and angle of incidence necessary to sustain level flight at your target speed and altitude. I didn't try for 20000m as it probably wouldn't do well. In the main KSP settings menu you should set the default throttle to 1.0 (technically the above mechjeb setting winds up restoring the default throttle, so it needs to be 1.0) In the attitude adjustment menu make sure you are using the "better controller" Whack the 45 degree phase margin button Whack the restore all other defaults button lost birth certificate near berlin; ksp high altitude plane. KSP Delta-V Calculator - KSP HOW TO CALCULATE DELTA-V What's the difference between a power rail and a signal line? So now to come to an end: from my experience I'd say for a medium sized aircraft it is best to fly between 12-13 km. if you just go into the SPH, slap together some parts like Legos, and go-- is to attach them with zero AoA. Check out the website and try the game out for yourself :Dhttps://kerbalspaceprogram.com/ Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Third, which I haven't given a good try, would be a carefully-timed deorbit maneuver so you come down through your desired location as you fall from space. Grichmann's answer has been the most reliable way I've found to complete these missions. KSP doesn't care (much) about aspect ratio; the total lift is the same regardless of configuration. Secondly don't think of engines working better at different altitudes, think of them working better with different air intake quantities. A jet engine from KSP 0.18 A jet engine is an air-breathing engine which uses onboard liquid fuel and combusts it with the oxygen drawn from the atmosphere. In my case, it brought me to 20km up at a 45-degree angle, but it is probably not optimal. Hopefully this will be helpful to you. By climbing, you reduce drag, exponentially with altitude. Or it can supercruise at three times the speed of an equivalent Wheesley jet (with nearly equal fuel efficiency) at 15,000 m altitude. The idea is to slow the plane to a stall above your landing spot the pop the parachute. Press question mark to learn the rest of the keyboard shortcuts. The Rapier, for example, works great as a high-altitude engine, precisely because it can go so fast. Don't worry about Isp. That's sub-optimal, because having the fuselage pitched like that means it'll have more drag than it otherwise would have. Is anywhere a list of the altitude levels (I don't know a better term) available? Originally posted by lord bird: yep thats right jool has a surface. Welcome to the forums, ZDW. One problem is i'm running stock on career mode and only have 30 part to spare, so large planes are out of the question. I'm in career mode and got all groups of the 45-science-cost level, except Flight Control, and additionally have Electrics, Heavy Rocketry and Fuel Systems. Aircraft can be very temperamental to fly, especially on the keyboard. Note that keeping the plane weight low is critical, only carry a very small amount of fuel. You can spin around the whole world on just fumes. So Pvt. Cheers again fellas. The second, Wet mode, uses the afterburner to produce thrust almost equal to the J-X4 "Whiplash" Turbo Ramjet Engine, but at a considerably reduced fuel efficiency. Long distance airplane flight tips? - Kerbal Space Program Forums There's basically three ways to do that: lifting surfaces, thrust, and orbiting. I tried building a plane but can't climb higher than about 11,000m (I don't have many plane parts yet, though). But my guess is that these same general principles would probably apply to FAR, and that all that would change would be the numbers involved. That will unlock: Your previous content has been restored. Landing On Laythe Moon Of Jool Kerbal Space Program Youtube KSP Career: Episode 13 - High Altitude Surveys Mike Aben 28.5K subscribers Subscribe 7.7K views 7 years ago Day 114: A busy day at the KSC with three missions, the highlights being the launch. EDIT: Essentially, make like an SR-71, if an SR-71 didn't have cooling problems limiting it to Mach 3.4. Strictly speaking this optimisation is unnecessary, but it can win you a bit of range. . High altitude planes - Kerbal Space Program Forums Each stage of the rocket has a delta-v that depends on the stage fuel mass and the engine specific impulse. Put a couple of radial mount parachutes just above the com and add a reaction wheel. even stranger is that the surface is textured. But. I've added more engines, more intakes to no avail. All rights reserved. How can this new ban on drag possibly be considered constitutional? Either finish the low-altitudes and then spend all your fuel on the high-altitude boost, or do the boost first and save a little fuel or try to hit the rest through unpowered gliding. 1.) Make sure you have lots of control surfaces because at very high in the atmosphere, there's not much air for the wings to control the craft with. Another approach, which I was managing with some success before I figured out jets, is to build a rocket and catapult yourself towards the measurement point. It was meant for low altitude flight. Just sounds like the engines can't get enough air, in KSP high speed also generates air intake so I'm guessing what is happening is that you have the initial speed to get to altitude but the lack of air at altitude is starving the engine resulting in lower speed which further reduces air intake and it cascades until either the engine shuts down or you return to denser atmosphere at a lower altitude. Satellite Launcher - Kerbal Space Program Wiki The most efficient way is, of course, to make a high altitude (or space) plane. Either of the two speeds are to be avoided. Because of the exponential nature of the rocket equationthe orbital rocket needs to be considerably bigger. Basically you just need to fiddle with it and try some test flights. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Early career high altitude observations question : r/KerbalAcademy Using very light "engine rich" planes and "reverse swooping" (building velocity at 10km then gently curving up) you can temporarily get above 20km with Wheesely and Juno. As high and fast as you can go without engine flameout: preferably ~2000 m/s at 25-30 km (and yes, that's almost orbital velocity). A destructible memorial to the old Mk. [Solved] 30 20 / I did some testing and found that the turbojets get the best Isp around 5.2 km altitude, so I was thinking of flying at that altitude. Let me share what I know about jet engines, speed, and efficiency. It flames out at 25,000. I'm in career mode (have the turbofan engine) and trying to get some science readings for a mission at a high altitude. At the equator, sea level temperatures vary between a nighttime low of 9 C and a daytime high of 15 C. So long as there's only one high-altitude measurement to take, you should be able to complete a whole set of 3-4 in one flight. Jet engine - Kerbal Space Program Wiki New comments cannot be posted and votes cannot be cast. If you upgrade to the panther (or get one on a contract) that engine can get you much higher. 101 kPa 1 atm Scale Height 5000 m Atmospheric Height 69 077.553 m 1.010-6 atm Minimum Temprature -40.19 C 232.96 K Maximum Temprature 20 C 293.15 K Oxygen Present Yes Contents 1 Kerbin 2 Topography 3 Kerbal Space Center 4 Atmosphere 4.1 The Troposphere 4.2 The Stratosphere 4.3 The Thermosphere 4.4 The Exosphere 5 The Kerbin System 5.1 The Mun Sub-orbital spaceflight - Wikipedia Thanks for the help! I have enough patience to do the slow flying, but is it horribly inefficient? You can post now and register later. Is it possible to get to an altitude of 16-20km with normal plane engines? Because when your engine has to take in air forcefully it automatically means there isn't enough surrounding your engine and that again means that air density and therefor air resistance must be pretty low too. Exorcet's Content - Kerbal Space Program Forums Challenges The U-2's published maximum altitude is somewhere above 74,000 feet. Isn't that backwards snark? Does a plane consume more fuel if it flies at higher altitudes? You cannot paste images directly. And it's stock, unfortunately. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. This can be done with moar boosters or more calculated wing and body design, depending on the aero model you use. - Inside the atmosphere works the same way, except you need to be on an suborbital trajectory. This is particularly useful for pairs of engines, since this makes it possible to keep the thrust equal when activating the afterburners. Jets drop thrust at higher altitude and speed, but also drop . high-2 A Screenshot of Kerbal Space Program I also set it to enable the cockpit's reaction wheels to improve control at high altitude, and close air intakes to reduce drag. I'm trying to build a high altitude plane and have found out that the rules are different. High altitude flight is efficient because the air is thinner, and therefore aircraft experience less parasitic drag. *I use FAR these days, which basically means completely replacing every spaceplane and rocket you ever designed to account for its much more realistic aerodynamics. http://kerbalspaceprogram.com, Press J to jump to the feed. Thanks for asking this, I've been struggling with the same problem in career mode. However, I've failed to build a vehicle to achieve this (without a hundred retries). Knowing how to design these types of planes make jumping in to SSTO design very easy as there are only a few minor changes that need to be made.Music Credits:1st Song: \"Elephants\" - YouTube Audio Library2nd Song: \"Hot Heat\" - YouTube Audio Library3rd Song: \"Echoes\" - Kasbo - https://soundcloud.com/k-sboWhat game is this? its rather flat but its a solid surface. Only the fuel tanks attached to rockets have any oxidiser in them. AoA built into the wing relative to the plane body is called the angle of incidence, just to help clear up. However, it seems as if your delta wing has has more area, might that be it? When you are surrounded by plenty of air there will of course be no need to suck in air artificially but the higher you get the less dense the air around you becomes and in order to make sure that your engines have enough oxygen to burn the fuel it needs to suck air in forcefully. Is it even possible? Privacy Policy. Should i add a larger wing area for higher lift? Turbojets are so ridiculously efficient that it doesn't really matter. Note: Your post will require moderator approval before it will be visible. Imagine that first plane but with the bubble cockpit and the old style round intakes. The more successful the flights, the more successful the space program is. Why is there a voltage on my HDMI and coaxial cables? Since turbos are almost always enough to get you off the ground and up to altitude, I usually just do straight turbojets (with some RAPIERs for SSTO spaceplanes); the minute amount of fuel saved during the ascent isn't worth lugging those superfluous engines around at the hypersonic regime. KSP Quick Guides: High Altitude Design and Flying - Stock v.23 Stoober AK 3.32K subscribers Subscribe 21K views 8 years ago This tutorial will cover designing and flying a plane that can soar. Remembering the FW TA152 and the U2 I put long wings on it and while its turn rate makes an airliner look like a fighter plane it is stable enough at 19000m. So, to correct " is below crosshairs", what you need to do is to add a little AoA to the wings. Ideally, you'll want to avoid these contracts until you get the High-Altitude Flight tech node and the improved jet engine that comes with it. I've been trying my hand at some High altitude speedy planes for a while now, but can't seem to get a hang of the altitudes that each engine likes, I know kerbal isn't earth, so looking up the crushing altitude of say the sr71, doesn't seem to apply, but I was hoping that others experiences would help me. TLDR: You need parts you don't have to make a plane that flies that high. How to make a loop for linear actuator in Kerbal Space Program, Breaking Ground. Remember that you need to have intakes somewhere in line with the engine to function at that altitude. Main goals: Auto-trimming. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. Why not keep the engine for multi-stage rockets? - Space Exploration - but they were talking about having two intakes/engine. This lowers their effective "weight"-- for example, a craft flying at 1400 m/s on Kerbin is effectively flying as if gravity were only 2/3 of its actual value. They always seem to lose power at about 15km, but I'm wondering if there's something I can do to fix that. As long as the engine gets enough air it will work at proper efficiency. Best altitude to fly a plane? - Kerbal Space Program - GameFAQs Yes. Redoing the align environment with a specific formatting, Trying to understand how to get this basic Fourier Series. This thread is quite old. Designing a High Altitude Jet | KSP: Making Space Home Typically, I watch my Apoapsis as I boost to the high altitude, and there's enough momentum to coast to the peak before completely running out of fuel. Delta-V is the velocity change necessary to perform orbital maneuvers. EDIT: Didn't notice you were using FAR. Thrust means that slower-is-better no longer applies: now, slower means less drag but more gravity, so there's a tradeoff (which I'm not going to carefully calculate for you, because it's hard). Paste as plain text instead, KSP - High Altitude Aircraft - YouTube My plane has turbojets and lots of fuel, but I am wondering what the optimal way to fly is. alternatively, combine a liquid fuel rocket into your plane. If it's below the cross-hairs, you need a little more AoA. . You are simply running out of atmosphere (i.e. The J-404 "Panther" Afterburning Turbofan is a jet engine added in version 1.0.5. I also added a parachute and decoupler since I find it too hard to correctly land this thing yet ;-) I managed to land in the water once, though. Keep in mind that wheesley engine's performance decreases significantly as the altitude increases. The returns are diminishing so eventually you will hit a ceiling. These designs are great for getting around Kerbin quickly, but without going orbital. Powered by Invision Community. Ksp engine altitudes I've been trying my hand at some High altitude speedy planes for a while now, but can't seem to get a hang of the altitudes that each engine likes, I know kerbal isn't earth, so looking up the crushing altitude of say the sr71, doesn't seem to apply, but I was hoping that others experiences would help me. For comparison, the second most maneuverable engine is the CR-7 R.A.P.I.E.R. A temple in the desert (6 29 47 S 141 40 3 W) known as Tut-Un Jeb-Ahn, although this name can only be seen when a vessel crashes into it. There is no such thing as "so high radar can not detect it", since radar can detect things in outer space. Also, jets eat fuel at pounds-per-minute -- if you cover twice as much ground in the same time, your plane will be more efficient. Your airspeed is mostly limited by terminal velocity; you can go much faster if you climb a little higher. But since when do Kerbals wait for ideal conditions? This tutorial will cover designing and flying a plane that can soar at high altitudes! Yes, although they have only been flown with nearly full tanks. So the faster you go the higher you can fly where there is less drag. - Insane lift to weight didn't help. high altitude flight :: Kerbal Space Program General Discussions What you should be concerned about is atmospheric drag, and that's minimized by high-altitude flight. 3x06: I design a new, high altitude, jet to collect high. I find that a conservative amount is 2 RAM intakes and 2-4 radial intakes per turbojet. Airplane Plus on SpaceDock Incidentally, for these speeds and altitudes, ordinary jets are the better choice. Most efficient cruise altitude for jet planes? : r/KerbalSpaceProgram There are two factors to that: how thick the air is, how fast the ship is going. Connect and share knowledge within a single location that is structured and easy to search. Another problem is jet engines stealing fuel from the rockets' tanks - you may want to pump the fuel manually (requires an R&D centre upgrade) or add some pipes between them. Be sure to have enough intakes (I think maximum efficiency in stock is 1 ramjet intake per ~2 tons of plane, though that is aesthetically ridiculous), and if you're still running short of intake air, you can dip down a bit to speed up and get to denser air. If you nudge your wing's angle up slightly with rotate tool then it'll move your prograde closer to your direction of flight and significantly reduce drag. Air temperatures vary with latitude and time of day. Clear editor. Been a while since I've flown stock*, but I've heard that, for maximum efficiency, you want one turbojet for every 7.5 tons, and about four ram intakes for each turbojet. Your previous content has been restored. Here's Mr. Manley using it in his tutorial: @Pvt.Grichmann: I think it's at specific locations on Kerbin, not just anywhere above 18km. First is thrust; the higher you get, the lower the thrust your engines deliver. Have you checked out the wiki yet? Which makes this engine ideal for those missions which require doing many science activities above particular altitudes. All trademarks are property of their respective owners in the US and other countries. How do I align things in the following tabular environment? Simply changing the intakes made it fly completely out of control and impossible to land. Approximately 12km up the main engines stop providing enough thrust to maintain the climb, so it's time to switch to rocket mode. KSP Quick Guides: High Altitude Design and Flying - Stock v.23 Designing a High Altitude Jet | KSP: Making Space Home Mike Aben 24.8K subscribers Join Subscribe 85 Share 3.4K views 1 year ago Ep. What are the altitudes for the various altitude record contracts? Now I have a plane that will fly around the world at an altitude of the low-20s. 3x06: I design a new, high altitude, jet to collect high atmospheric science. Thankyou all, I now reckon I have a much better understanding of the engines, hopefully that'll translate to better aircraft. Is it correct to use "the" before "materials used in making buildings are"? How to tell which packages are held back due to phased updates. Create an account to follow your favorite communities and start taking part in conversations. Pasted as rich text. TroubleshootingMechJebPVG - KSP-RO/RP-0 GitHub Wiki The ideal case for optimally efficient flight (which is what you want if you're trying to maximize cruise altitude) is when your wings are mounted to the body, pitched up just enough that when cruising in level flight, the body of the aircraft is pointing perfectly . I am currently designing a mission that will involve several very long distance plane flights. A well-designed jet with this engine and with the afterburner lit, flown properly, can momentarily climb to 30,000 m altitude. In KSP2, you are a rocket scientist who must build and test rockets, spaceships, and planes. Welcome to the forums. You can go above 20km with the J-404 Panther. As you found out, it basically konks out at 15km. : : . Kerbin | Kerbal Space Program Wiki | Fandom If released at a speed of 700 or more m/s and an altitude of 20 or more km, the satellite will achieve orbit with its second stage mostly full, leaving it with approximately 1600 m/s of delta-V -- enough to achieve lunar or interplanetary orbits and, on small bodies, landings. I've been finding it difficult to build a jet that can fly over 15km alt. If you enter the Mun's SOI, it immediately counts as "In Space High over Mun" until you get below 60km Mun altitude. I was hoping that the new intakes would give it the added altitude. A well-designed jet with this engine and with the afterburner lit, flown properly, can momentarily climb to 30,000 m altitude. Espaol - Latinoamrica (Spanish - Latin America), https://steamcommunity.com/sharedfiles/filedetails/?id=1933948095, https://steamcommunity.com/sharedfiles/filedetails/?id=1933948668, https://steamcommunity.com/sharedfiles/filedetails/?id=1934517923, https://steamcommunity.com/sharedfiles/filedetails/?id=1335577943, https://steamcommunity.com/sharedfiles/filedetails/?id=1640213502, https://steamcommunity.com/sharedfiles/filedetails/?id=1640214586, https://steamcommunity.com/sharedfiles/filedetails/?id=1937826505, https://steamcommunity.com/sharedfiles/filedetails/?id=1937931692. Building a High Altitude Jet | Stream pt. 2/3 (KSP 1.11.2) As I understand, the OP wanted "the most efficient way to fly", and simply needed a bit of help in realizing that that is a hypersonic, high-altitude, high-performance aircraft which is a RAPIER and a little oxidizer away from being an SSTO spaceplane. as a rule of thumb they all lose thrust at higher altitudes and at high velocities. Also, while you mentioned the TJs most efficient altitude is ~ 5km (I'm not sure, but lets assume it's true), you need to realize that the drag you're getting at that altitude is going to wreck any efficiency gains. With some fins to keep you stable and careful aim, you can hit your desired location and altitude and will have 5-10 seconds to collect data before you hurtle past it and pull your chute. At 3500m, you have half the drag you'd have at the surface; at 7km, 1/4 the drag, at 10.5km, 1/8 the drag, etc. If drag were the only concern, at any given altitude the slower you go, the less fuel you need: the work done by drag over a distance grows linearly with speed (the force grows quadratically with speed, but the time falls linearly). If you have an account, sign in now to post with your account. 1 Pod outside the level 3 VAB. Well, this game isn't a perfect flight simulator yet, so it will be difficult to figure out. This thread is quite old. The thrust of jets (turbo or otherwise) depends on airspeed: basics deliver more thrust at low speeds, while turbojets only really come into their own when you fly very fast (which also means flying very high, 20km and over). You arent doing anything wrong. The high performance engine for me performs pretty good till about 15000 meter. Now lets combine these two indicators: The best performance your engine can achieve is when you have an optimal amount of Air Flow (obviously) but also the MAXIMUM amount of Air Intake. Kerbal Space Program ( KSP) is a space flight simulation video game developed by Mexican developer Squad for Linux, OS X, Windows, PlayStation 4, PlayStation 5, Xbox Series X/S and Xbox One. I wasn't expecting so many excellent answers! Reddit and its partners use cookies and similar technologies to provide you with a better experience. If you've attached them to your fuselage with zero AoA, what that means is that when you fly, you're going to have to have the entire plane pitched slightly above in order to generate lift. Using Kolmogorov complexity to measure difficulty of problems? It is designed to aid in player-controlled flight on generic (space)plane, providing a soft layer between user joystick\keyboard input and control surface outputs. Air Flow + max. The Kerbal Space Program subreddit. There are no requirements as far as size or power are concerned, as the AI Pilot is capable of flying pretty much anything - from tiny scout planes to oversized freight craft. Orbiting is the most fun one: the higher the orbit, the less speed you need to maintain to stay in orbit, *and* the less air there is, so that's a double-whammy in terms of reducing fuel consumption. Slap that behind a plane you'll be able to go beyond 20km without any trouble. Range with this method is pretty short due to drag. Also, Valley and Theomon fly to different corners of Kerbin and three mapping satellites are launched. 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. 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