As you found out, it basically konks out at 15km. The longest flight got them down to a little more than half full. You get tons of thrust if you put it into "wet" mode, but you lose fuel efficiency. 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. More air is better. Display as a link instead, From my observations I can say that "Efficiency" is not a good indicator of how well your engine performs. Thanks, I'll go try to stuff a few extra turbojets and intakes on my plane Do you know how many intakes/turbojet are needed to run in the regime you described? ksp high altitude plane. That will unlock: "Whiplash" Turbojet Which is capable of high altitude, high speed flight. Isn't that backwards snark? I'm in career mode (have the turbofan engine) and trying to get some science readings for a mission at a high altitude. My plane has turbojets and lots of fuel, but I am wondering what the optimal way to fly is. How to tell which packages are held back due to phased updates. 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. June 3, 2022 . Powered by Invision Community. 1 1: The basics 2 2: Setting it up 3 3: First flight 4 4: Finishing touches 1: The basics First of all, you're going to need an airplane. Create an account to follow your favorite communities and start taking part in conversations. Thanks for the help! Your decreased flight time means you probably won't make it to your location. Then it is "In Space Low over Mun.". Strictly speaking this optimisation is unnecessary, but it can win you a bit of range. 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. It flames out at 25,000. I looked into the .cfg files and there are no special properties allocated to them. The idea is to slow the plane to a stall above your landing spot the pop the parachute. 2022 Take-Two Interactive Software, Inc. principle. It is somewhat slow but very steady in flight. Unfortunately, most space plane designs are impossible (or at the very least impractical) at your current tech level. Your link has been automatically embedded. 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. In KSP2, you are a rocket scientist who must build and test rockets, spaceships, and planes. This makes jets built using this engine considerably more maneuverable. Or it can supercruise at three times the speed of an equivalent Wheesley jet (with nearly equal fuel efficiency) at 15,000 m altitude. There is a very close tolerance to the two speeds. I was generally under the impression that basic jets were mostly deadweight on high-performance aircraft: while they are superior for low-speed, low-altitude operations, they become deadweight at hypersonic velocities. Air temperatures vary with latitude and time of day. Immediately starting rocket engines at full throttle turned out to make most of my aircrafts totally unstable, turning them up gradually worked way better. Either of the two speeds are to be avoided. Thanks. 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. FBW uses three controllers - pitch, roll and yaw. From my experience using a panther it starts to lose speed after 15-16 kms, a more suitable cruising height is 9-13km. The maximum cruise altitude is just over 40,000 feet. Secondly don't think of engines working better at different altitudes, think of them working better with different air intake quantities. Anyway thanks in advance. What am I doing wrong here in the PlotLegends specification. 3x06: I design a new, high altitude, jet to collect high. My question is really about controllability. Note that KSP planes get one substantial speed benefit that's much more pronounced than IRL aircraft, due to the freakishly small planet sizes: they're actually flying at a large fraction of orbital velocity. This thread is quite old. I only seem to be able to make planes that can fly a bit below that altitude and then temporary rise to it. 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. Arqade is a question and answer site for passionate videogamers on all platforms. That's because wings need to have some AoA to the airstream in order to generate much lift. Is it even possible? You can spin around the whole world on just fumes. 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. That's just a guess, though-- perhaps someone more familiar with FAR could weigh in.). 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. Only the fuel tanks attached to rockets have any oxidiser in them. To get there, you're going to want to climb at the fastest rate you can manage to 18-20 km, at which point you should mostly level off and start accelerating horizontally. Delta wings are able to work better since the lack of lift per square area is compensated by having larger area to provide lift. Slap that behind a plane you'll be able to go beyond 20km without any trouble. Highest and fastest possible is best. As said above, the Wheesley is specifically designed as a low altitude engine. What altitude and speed should I go? a screenshot of kerbal space program 2. by: lord bird. *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. When added to a plane it allows tuning of the controls vs speed/altitude/G load/other factors. So that means that even if you are inside the atmosphere but still orbital (such as during aerobraking), your science will not count as "Inside the atmosphere", For example, orbiting Kerbin above 250km altitude, your science is counted as "In Space High over Kerbin." In the game, players direct a nascent space program, staffed and crewed by green humanoid aliens known as "Kerbals". Using indicator constraint with two variables, Is there a solution to add special characters from software and how to do it. These are the building blocks of solid spaceplane design!Subscribe! 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. Valve Corporation. This page was last edited on 22 December 2019, at 20:54. This way control surface max deflection can be programmed by an aircraft designer to make . Minimising the environmental effects of my dyson brain, Theoretically Correct vs Practical Notation. http://kerbalspaceprogram.com, Press J to jump to the feed. Is it correct to use "the" before "materials used in making buildings are"? high-2 A Screenshot of Kerbal Space Program its rather flat but its a solid surface. - but they were talking about having two intakes/engine. 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. By climbing, you reduce drag, exponentially with altitude. I've since shaved that down more but that was by going even higher and even faster). This means that the only thing that decides wheter your engines run efficient is determined by how much thrust they produce (opt. 1 Pod outside the level 3 VAB. : : . You can go above 20km with the J-404 Panther. If it's below the cross-hairs, you need a little more AoA. 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. There is no such thing as "so high radar can not detect it", since radar can detect things in outer space. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. Watch out for your SAS if you're running batteries without a jet for a long time. How can this new ban on drag possibly be considered constitutional? 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 don't have the numbers handy, but you can expect something like 400m/s at 15km. Make sure you've angled your wings up slightly so that you provide enough lift for a 0 angle of attack at top speed. But. 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. Using Kolmogorov complexity to measure difficulty of problems? Why is there a voltage on my HDMI and coaxial cables? 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. Clear editor. Note that you need to activate the afterburner ("Wet Mode") manually. 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. Press question mark to learn the rest of the keyboard shortcuts. Please consider starting a new thread rather than reviving this one. A well-designed jet with this engine and with the afterburner lit, flown properly, can momentarily climb to 30,000 m altitude. 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. Unfortunately I won't be able to test it today, but @SaintWacko's proposal sounds promising. This works, but it's not optimal. It was meant for low altitude flight. What are the units of measure used in Kerbal Space Program? Thats my problem right now. The most obvious solution is try and optimize your craft for high altitude lift by giving it long wingspan like a U-2 spyplane. The U-2 is probably the highest altitude aircraft still flying. Or try using SRBs instead. 600+ m/s) and low altitudes (e.g. 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. Turbojets are so ridiculously efficient that it doesn't really matter. 2022 Take-Two Interactive Software, Inc. Make sure we're on the same page with terminology. Once you're at that regime, you should be able to cover huge distances on tiny amounts of fuel. Why that? Or it can supercruise at three times the speed of an equivalent Wheesley jet (with nearly equal fuel efficiency) at 15,000 m altitude. 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!). However, it seems as if your delta wing has has more area, might that be it? Once you're at that regime, you should be able to cover huge distances on tiny amounts of fuel. That would argue for going as high as possible, as slow as possible, but apart from drag you also have to fight gravity. Well, this game isn't a perfect flight simulator yet, so it will be difficult to figure out. Unfortunately, there's no simple rule to tell you what the angle needs to be when you're building the plane-- it depends on lots of variables, such as your weight, drag, intended cruising altitude, intended cruising speed. First is thrust; the higher you get, the lower the thrust your engines deliver. I'm trying to build a high altitude plane and have found out that the rules are different. Upload or insert images from URL. I was even able to do this with three pairs of Junos instead of the large jet engine pair (I don't have the technology level for that). Once it's in the air, it's stable and easy to fly and manages to fly at altitudes between 11k 12k without problems. Press question mark to learn the rest of the keyboard shortcuts. It seems to be based on the General Electric F-404 Afterburning Turbofan, which shares the same name and maximum thrust (85 kN dry). The Panther engine can hold 19,000 steady and oscillates around 20,000. Whiplash is the engine you would want to use on a plane meant to go 20km. How do I align things in the following tabular environment? EDIT: Didn't notice you were using FAR. But maybe your patience? All trademarks are property of their respective owners in the US and other countries. Alternatively, you can assign the afterburner toggle (labelled "switch mode") to an action group if you wish to activate it with a hotkey. I didn't try for 20000m as it probably wouldn't do well. Display as a link instead, Best way to get down into thicker air and land is to perform what dogfighters called a 'Split-S'. The U-2's published maximum altitude is somewhere above 74,000 feet. And it's stock, unfortunately. 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. I've been finding it difficult to build a jet that can fly over 15km alt. But you'll need to unlock: High Altitude Flight Which cost 300 science. Press J to jump to the feed. The Rapier, for example, works great as a high-altitude engine, precisely because it can go so fast. - Insane lift to weight didn't help. Why do many companies reject expired SSL certificates as bugs in bug bounties? (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. You are just about at maximum speed and at the same time very close to stall speed. i dont know what kind of range youre looking for but i would make a significantly smaller plane. and our Pasted as rich text. Privacy Policy. Information Changelog Stats At sea level, it produces 120 kn thrust, but at 15 km altitude, it only produces 13.7 kn of thrust, barely enough to provide any thrust to climb higher, Long and narrow wing has less surface area to provide lift, and at higher altitude, the atmospher is so thin that the lift generated by long and narrow wings is insufficient for sustainable flight. If it's above the cross-hairs, you need a little less. Thankyou all, I now reckon I have a much better understanding of the engines, hopefully that'll translate to better aircraft. 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. 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. A little while back I spent a long time trying to circumnavigate Kerbin on the least liquid fuel possible (i posted the record to the sub: 254 units of fuel.
