My 'plane science' is more advanced than my 'rocket science' (career mode) because I got tired of seeing all the high-altitude missions I had on the books and wanted to finish them. There is no such thing as "so high radar can not detect it", since radar can detect things in outer space. I'm in career mode (have the turbofan engine) and trying to get some science readings for a mission at a high altitude. Right now, my big, fat plane has trouble breaking 10 km altitude and 200 m/s forward speed (largely due to its payload). Additionally please know that .16 will feature new code that will change the way space planes work in every aspect. To get higher with the low tech jet engines, you need rocket assist. The Kerbal Space Program subreddit. Very cool. 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. 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. I don't recall if they model aspect ratio, but either way, the struts are murder and the delta wing has so much more wing that it'll still have more lift. Once you're at that regime, you should be able to cover huge distances on tiny amounts of fuel. I've been finding it difficult to build a jet that can fly over 15km alt. As long as the engine gets enough air it will work at proper efficiency. Note: Your post will require moderator approval before it will be visible. Once I'm near or in the target area, I set the throttle to 0 and start the Swivel. How to make a loop for linear actuator in Kerbal Space Program, Breaking Ground. What are the minimum altitudes for each warp level? I don't have that cockpit in my career game yet, but maybe it will work with the other one. Note that you need to activate the afterburner ("Wet Mode") manually. I've added more engines, more intakes to no avail. Build a plane or rocket for Kerbal high altitudes, We've added a "Necessary cookies only" option to the cookie consent popup, Screenshot of the Week #85 [Submissions Closed - Vote Now!]. A well-designed jet with this engine and with the afterburner lit, flown properly, can momentarily climb to 30,000 m altitude. If the wings are flat and your plane steadily loses altitude in level flight at a given speed (as most designs will by default), it means you either need to pitch up slightly, increasing the angle of attack and keeping your vertical velocity at 0 by flying up slightly to compensate for the pull of gravity that lift isn't compensating for. 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. There are two factors to that: how thick the air is, how fast the ship is going. Pasted as rich text. EDIT: Essentially, make like an SR-71, if an SR-71 didn't have cooling problems limiting it to Mach 3.4. My question is really about controllability. as a rule of thumb they all lose thrust at higher altitudes and at high velocities. KSP doesn't care (much) about aspect ratio; the total lift is the same regardless of configuration. What are the units of measure used in Kerbal Space Program? All trademarks are property of their respective owners in the US and other countries. 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). 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. I have enough patience to do the slow flying, but is it horribly inefficient? And how many km can I expect to get per v (as calculated by Engineer redux Kerbin atmospheric stats, I know this is weird with planes)? Air Flow: Air Flow represents with how much force air passes the turbine (notice: different amounts of air at the same speed equals in different amounts of force!). ksp high altitude planebad bunny tour 2022 tickets ksp high altitude plane. As has been said, ISP is nothing to worry about. 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. surface of jool. Or it can supercruise at three times the speed of an equivalent Wheesley jet (with nearly equal fuel efficiency) at 15,000 m altitude. Even better, burn a little more, and you can pop out of the atmosphere for a bit and avoid all that nasty drag stuff. i dont know what kind of range youre looking for but i would make a significantly smaller plane. (Actually, four ways: but balloons aren't in the stock game) Lifting surfaces are great but they lose effectiveness just as fast with altitude as drag falls. The X-37 is operated by the United States Space Force for orbital spaceflight missions intended to demonstrate reusable space technologies. Download (104.45 MiB) License: CC BY-NC-SA 4.0 Game Version: 1.8.1 Downloads: 371,115 Author: blackheart612 Mod Website: Forum Thread Support this mod: Donate Followers: 626 Outdated Mod This mod is not known to work with the latest version of Kerbal Space Program. So Pvt. 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 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. But since when do Kerbals wait for ideal conditions? 3.) Redoing the align environment with a specific formatting, Trying to understand how to get this basic Fourier Series. I decided to look into that two intakes thing, and it turns out to make 11-12 m/s difference at 19,000m with my plane. 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). - "In Space High" means your craft is inside the given Sphere of Influence and above the "Space Border" altitude listed in the Celestial Body Multiplier Matrix. This page was last edited on 22 December 2019, at 20:54. But you'll need to unlock: High Altitude Flight Which cost 300 science. What's the difference between a power rail and a signal line? Why is there a voltage on my HDMI and coaxial cables? Approximately 12km up the main engines stop providing enough thrust to maintain the climb, so it's time to switch to rocket mode. That will unlock: Which lets you go faster, which lets you climb higher. 1Altitude requirement 2Orbit 3Speed, range, and altitude 4Flight duration 5Flight profiles 5.1Ballistic missiles 5.2Tourist flights 5.3Scientific experiments 5.4Sub-orbital transportation 6Notable uncrewed sub-orbital spaceflights 7Crewed sub-orbital spaceflights 8Future of crewed sub-orbital spaceflight 9See also 10References The most efficient way is, of course, to make a high altitude (or space) plane. Building a rocket to fly vertical seems to be nearly impossible, in the atmosphere they tend to become unstable (or maybe I missed a trick?). Using Kolmogorov complexity to measure difficulty of problems? Really. High altitude flight is efficient because the air is thinner, and therefore aircraft experience less parasitic drag. KSP - High Altitude Aircraft 16,702 views Jan 22, 2016 172 Dislike Share Save Phoenix Fleet Systems 222 subscribers Have a type of atmospheric craft you'd like to see me experiment with? That's because wings need to have some AoA to the airstream in order to generate much lift. Air temperatures vary with latitude and time of day. This can be done with moar boosters or more calculated wing and body design, depending on the aero model you use. Yes. Make sure you've angled your wings up slightly so that you provide enough lift for a 0 angle of attack at top speed. Welcome to the forums. Information Changelog Stats If not, please explain why, which I know you have no problem doing! This means that the only thing that decides wheter your engines run efficient is determined by how much thrust they produce (opt. 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. I would like to know which altitude I have to maintain for my experiments. Is it possible to get to an altitude of 16-20km with normal plane engines? You can post now and register later. Well, this game isn't a perfect flight simulator yet, so it will be difficult to figure out. Only the fuel tanks attached to rockets have any oxidiser in them. The high performance engine for me performs pretty good till about 15000 meter. 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. Strictly speaking this optimisation is unnecessary, but it can win you a bit of range. First is thrust; the higher you get, the lower the thrust your engines deliver. Delta wings are able to work better since the lack of lift per square area is compensated by having larger area to provide lift. Upload or insert images from URL. This way control surface max deflection can be programmed by an aircraft designer to make . 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 should perhaps start trying out NEAR to get ready of 0.90, though. Turbojets are so ridiculously efficient that it doesn't really matter. I only seem to be able to make planes that can fly a bit below that altitude and then temporary rise to it. Put a couple of radial mount parachutes just above the com and add a reaction wheel. Planes in Space. Your answer got me in the right direction, though I ended up with a different design (see my own answer). Let me share what I know about jet engines, speed, and efficiency. Its an approximation missing someelements. Slap that behind a plane you'll be able to go beyond 20km without any trouble. Pretty often, the tail "wiggled" and/or the plane became totally unstable when I fired the rocket boosters. Any advices for building a vehicle for this task? 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. So if you replace the turbos with basic jets, you will have more thrust from the ground up, and your vessel will weigh slightly less. That would argue for going as high as possible, as slow as possible, but apart from drag you also have to fight gravity. You'll notice that usually your prograde marker is slightly below your pitch. How to tell which packages are held back due to phased updates. Pvt. Your airspeed is mostly limited by terminal velocity; you can go much faster if you climb a little higher. 2022 Take-Two Interactive Software, Inc. 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. Cookie Notice You can halve the drag by climbing a bit less than 3500m. It flames out at 25,000. Due to the lower air pressure at higher altitudes its thrust output decreases accordingly. Of course, this thing has very limited range, speed and acceleration because of the extra weight. Ep. You can post now and register later. 2022 Take-Two Interactive Software, Inc. With only panthers unlocked I might add. "Whiplash" Turbojet. 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. That's just a guess, though-- perhaps someone more familiar with FAR could weigh in.). Clear editor. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. Your link has been automatically embedded. Paste as plain text instead, That's all true, but just read the OP: hypersonic appears to be completely out of the question. : : . Create an account to follow your favorite communities and start taking part in conversations. The maximum cruise altitude is just over 40,000 feet. In the stock atmosphere, the benefits of moving faster outweigh almost everything else. Your link has been automatically embedded. Use the reaction wheel to hold your attitude slightly nose down as you float down and you can guide yourself like a paraglider. Main goals: Auto-trimming. Challenges All the information you could want to know about science, including the altitudes for each celestial body, and what altitudes a given experiment works on are available at: http://wiki.kerbalspaceprogram.com/wiki/Science. For more information, please see our Is it suspicious or odd to stand by the gate of a GA airport watching the planes? 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. Don't be too surprised if KSP's aero model breaks down in edge cases. Things that work at low altitude don't work so well up high and the plane ends up going up and down while slowly losing speed until it can't maintain altitude anymore. Even if the air is thin, you can still put out plenty of power if you are shoving enough in with raw speed. Is it even possible? (Disclaimer: I've never used FAR myself; all of the above is based on my experience with stock aerodynamics. In KSP2, you are a rocket scientist who must build and test rockets, spaceships, and planes. Is there a single-word adjective for "having exceptionally strong moral principles"? Yes. It seems to be based on the General Electric F-404 Afterburning Turbofan, which shares the same name and maximum thrust (85 kN dry). Upload or insert images from URL. Editing Kerbal Space Program save files for KSO, Rasterpropmonitor for Kerbal Space Program. If it's below the cross-hairs, you need a little more AoA. Basically I can hit a target altitude of 20,000m but can not maintain it. Anyway thanks in advance. i recently used a single whiplash plane and was able to maintain a stable 21-22k meter altitude. I don't have the numbers handy, but you can expect something like 400m/s at 15km. The longest flight got them down to a little more than half full. 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. 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. If you upgrade to the panther (or get one on a contract) that engine can get you much higher. You may be correct and that 3 engine plane is a lemon. Upload or insert images from URL. *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. . Arqade is a question and answer site for passionate videogamers on all platforms. I looked into the .cfg files and there are no special properties allocated to them. You arent doing anything wrong. Rockets aren t the only way to get to space. General Electric F-404 Afterburning Turbofan, Stratus-V Cylindrified Monopropellant Tank, Kerbodyne KR-2L+ "Rhino" Liquid Fuel Engine, LFB KR-1x2 "Twin-Boar" Liquid Fuel Engine, T-1 Toroidal Aerospike "Dart" Liquid Fuel Engine, S1 SRB-KD25k "Kickback" Solid Fuel Booster, IX-6315 "Dawn" Electric Propulsion System, AE-FF1 Airstream Protective Shell (1.25m), AE-FF3 Airstream Protective Shell (3.75m), PB-NUK Radioisotope Thermoelectric Generator, https://wiki.kerbalspaceprogram.com/index.php?title=J-404_%22Panther%22_Afterburning_Turbofan&oldid=95515. Reddit and its partners use cookies and similar technologies to provide you with a better experience. I am currently designing a mission that will involve several very long distance plane flights. At that point your engines will be running about .7-.8 efficiency and you will be out of the thicker atmo which will allow you to go faster. Don't worry about Isp. Connect and share knowledge within a single location that is structured and easy to search. If you have an account, sign in now to post with your account. Then it is "In Space Low over Mun.". Hopefully this will be helpful to you. That's sub-optimal, because having the fuselage pitched like that means it'll have more drag than it otherwise would have. below 5,000 m), since the engine's extreme maneuverability may allow the aircraft to perform turns sharply enough to break up in flight. With the tanks disconnected that way, the rockets don't leach from the jets. Minimising the environmental effects of my dyson brain, Theoretically Correct vs Practical Notation. Powered by Invision Community. Basically you just need to fiddle with it and try some test flights. Which is capable of high altitude, high speed flight. That annoys me but I can't seem to get a design to make it work. Sideslip handling. Contents 1 Usage 2 Construction 3 Categories 3.1 Airplane 3.2 Seaplane 3.3 Spaceplane 3.4 VTOL 3.5 Glider 3.6 Mothership 4 Operation 4.1 Flight records 5 Notes Usage As you found out, it basically konks out at 15km. Remember that you need to have intakes somewhere in line with the engine to function at that altitude. Once it's in the air, it's stable and easy to fly and manages to fly at altitudes between 11k 12k without problems. Even up there the plane acts squirrely. 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. Grichmann's answer has been the most reliable way I've found to complete these missions. How do I install mods for Kerbal Space Program 1.1? Welcome to the forums, ZDW. 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 If you have an account, sign in now to post with your account. FAR is supposed to take aspect into account, but I'm not very experienced with it and cannot advice you as to how it works. This causes the body of your plane to generate additional drag. How do you get out of a corner when plotting yourself into a corner.
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