d4s_over_dt4

yeah,it's the kerbal way lmfao.iirc before propellers,people used to make eve sstos by landing them on top of the highest equatorial mountain(like 8km) (the booster strapping) that sounds fun!(also "strapping boosters...to see if we can make it..." sounds VERY kerbal lmao. average kerbal scientific research:)

as said earlier in the post,i could quickly reenter a plane and fly it very close to sea level to the rendesvous point,then do the opposite(fly for some distance then pitch up suddenly(actually,the planet is curved,so maybe it might be better to not pitch up suddenly)) to get out of the range of the gun quickly and bring back some warper fragments.if the gun shoots neither long range beams or itsself in the foot(literally) something is going to get past. i mean,again,the subnautica people are just not very bright when doing space.who doesn't reenter horizontally on an ATMOSPHERICAL planet?(also,no unmanned probes?i have seen no evidence of spaceworthy ones) (like,the point is,there are a ton of reasons why the ghost leviathans don't make a perfect defense) like,space is hard,if it wasn't so hard(for two things to hit each other) our satelites should have been already killed by kessler syndrome and our nuclear missile things should have already stopped being a threat.there's a ton of ways for something to go somewhere. guided missiles with enough agility would be enough(assuming the ships don't use kraken drives and have a reasonable maximum acceleration),and theoretically maybe the warpers could attack space wreckage to get minerals for the computer chips and hull(or just filter the water for it,if table coral can do it you can too) but then we don't see that happening(missile silos tend to be silos instead of railgun turrets,there is no point in rotating the silo on two axes if it uses missiles,for the same reason why we don't lift rockets and launch centers up mountains.)

1) what is the mass of the ion cube? 2) what is the ejection velocity? these two combined can figure out what the delta v and the acceleration(for every moment) is given the amount of energy diverted to rotating the thing. Buuuut probably(after a ton of research) we might never know...(the mass needs to be very precise,also i just realized i was assuming a linear mass change which is not guaranteed) (btw don't trust any technical jargon in the subnautica universe,apparently gravity turns happen after the ship reaches about the same speed with orbital debris,and landers have their descent vertical before even entering the atmosphere...)

The QEP in subnautica likely transports ion cubes from the antechamber of the PCF and provokes them so that they function like solid rocket motors with the direction of thrust not pointing directly away from the center of mass(if needed).

btw the mission was originally on eve,but i figured out 8k delta v would be a very big payload to send to eve.I also could not make my craft not burn up without also slowing down too much.(back then i did not yet have the idea of using a plane.my idea was to have the entire craft in a fairing,then(at a fairly low altitude) deploy the fairing and deploy the inflated heat shield under the fairing and also engage the air brakes on the top of the craft,then drop the heat shield and deploy the parachute and the landing legs.this would keep the craft at orbital speeds until the last moment. a plane proved to work better for that.) Also,how would you recreate the QEP in ksp?If the shots are infinite,the cannon would have to be a melee weapon,which means it will not strike things over 2.5km away(much smaller than most planets(still smaller than gilly)) If your recreation instead decides to use the in a more kerbal way( ),either the unguided missile would miss the target,it would be too fast for the physics timestep stuff,or it would have a low range. I was going to write stuff related to what the beam actually is,but eventually I found this video https://youtu.be/Q75QRF8g1nc?si=Z9mI5B55wbiQNhdp&t=71 which shows the cannon causing the nearby air to change its refraction coefficient and direct some green light towards the player,then there is a green fireball and we can assume some projectile leaves at some speed while leaving behind a green trail.(the video clearly shows the green line takes some time to reach the ship)Some seconds later,there is a green explosion in the ship after some smaller chemical explosions(ignited ruptured fuel tank i guess?),and the ship explodes.I guess my alternative theory of ignited ion cubes being the projectile might be more true than it seems!And the projectile might actually be slow enough to go all the way around the planet! However,this https://vsbattles.fandom.com/wiki/User_blog:Dark-Carioca/The_power_of_the_Quarantine_Enforcement_Platform suggests the projectile is probably around 100km/s on average which doesn't work well for using gravity to bend stuff,but then actually when I think of it now,the ion cube could be provoked in such a way that the thrust vector does not align with the center of mass,which would cause it to spin and accelerate,which could go around the planet.I'm going to open another topic for the math.

Fixed! (mental note:kerbalx(the mod) does not,apparently,upload pictures even if you add some...) Oh you mean the wing design.Yeah that was the easiest way to attach big s wing strakes since they aren't exactly the modular wing segments with parallel edges... The engines are at the front and so is the payload,so that dumping fuel or adding payload would make the ship more stable.(With full tanks and no payload,the craft is stable,so under no circumstances would it become unstable,unless a payload is protruding out of the fairing and being draggy.)

Thanks! I already solved the problem before I saw this post,and I just used regular control surfaces and made the craft point prograde using SAS. Heat shield wings normally have 45 degrees of wing inclination,so it is very appropiate to just point prograde.If the ascent rate is too high,I would roll the craft to cancel some out.

kerbalx decided it would be better off making a gateway error that day and on the website it doesn't accept image file dropping. fixed!

https://kerbalx.com/d4s_over_dt4/Sunbeam-Laythe-spaceplane It's a nice day,you're thinking of mission ideas.But suddenly... An unknown energy discharge strikes the vessel Sunbeam!And so its mission to rescue the 9(according to local police robots) survivors of the Aurora incident stranded on Laythe has failed! As we review the mission footage,it seems that Sunbeam has attempted a powered landing WITHOUT a suicide burn!This is certainly not the way to do it. So here,we propose that this sea plane could have been used instead of the Sunbeam.It should be the lander part in an apollo style mission to laythe(okay,the passengers will have to take a spacewalk,or the return stage would need an asteroid claw),but it could work just fine returning to kerbin by itsself(passengers might complain). It can enter the atmosphere almost without slowing down,then slow down to ~1000m/s,then quickly point somewhere else than down and kill all speed other than the speed necessary for flight.Then the airbreathing engine can be turned on and the parachute can be deployed after reaching the rendezvous point. The original rendezvous point would work just fine,but I would suggest not crashing into the island.The space laser physically cannot turn that quickly when you are flying at 150m/s so close to it.(would suggest braking from an elliptical orbit and directly aiming at the target,so that the place is reached almost vertically,with a lot of speed,and without too much use of the rapier engine for subsonic atmospheric flight(which the space gun could catch up to)Then it would fail to hit the craft after the parachute is deployed because the craft is almost directly below it,and it can't bend that far. After the passengers sit in their seats,the craft needs to turn on its engines and try being a submarine very briefly,until the necessary attitude adjustments are made(hint:the front of the plane needs to point somewhere dry.if it is pointing the other way,you are not going to space today.) and the plane is ready to emerge from the water.Then it needs to accelerate until temperature gauges are found and then rapidly pitch up.Then,at a certain point(where the lower stage can function as a decoy and protect the safety of the upper stage best),it can seperate all aerodynamic components and jet engines to reveal the upper stage,which will lift the passengers to orbit.If it does not rapidly pitch up and instead employs a more efficient ascent,it can reach orbit with easily enough dv to reach kerbin.Again,an orbital transfer stage should be left in orbit for the well-being of passengers. The craft is very lightweight as compared to the original sunbeam or aurora,so multiple crafts can be deployed at the same time,so that there will be a craft that reaches the surface.(i mean when you think of it,if you just reenter and land two crafts from opposite directions,the gun can only hit one of the craft even if it manages to hit one.) (btw,the craft can also function as a launch vehicle on kerbin,but if your best launch vehicle is this one,your space company is having a bad day.) (some rumours have been circulating about some alien pathogen,which are completely non-existent.think:if laythe had any pathogens,wouldn't the magnetic field of jool have already accelerated and dispersed those pathogens everywhere in the kerbolar system?remember,pathogens are made out of cations,which are negatively charged.Negatively charged particles experience the strong nuclear interaction,which accelerates them in the direction perpendicular to the periapsis of Eeloo and the apoapsis of Moho in the perspective of Kerbol.) (i forgot to change the parachute to two radial ones and change the intakes to one shock cone.(this would decrease drag and also i think shock cones are lighter than parachutes)i also forgot to fill the wings with fuel.)

Or you could install correctcol. When making the vehicle,also remember that heat shields have a ton of lift and nearly no drag,so the center of heat shields has to be on the center of mass so the craft does not have the tendency to nose up or down too much.If you have other aero components like control surfaces,they can be behind the COM.

The heat shield with the most wing area to mass without ablator is the 1.875 heat shield with 5.(others have <=3.5) Two of such heat shields are equivalent to three big S wing strakes,while only having double the mass. (how to use heat shield wings:remove ablator,cover both sides without creating the shroud, then move the covers away,then rotate the shield so that the side you would attach onto a command pod is looking at the ground behind it,angled 45 degrees.) (btw the big s wing strakes are the wings with the most wet mass ratio)

Which one? The SSTA DV chart:Turns out the calculator already uses inclination.What it doesn't use is the idea of aerobraking only removing energy and decreasing eccentricity.There are incorrect DV stuff when returning from other places,to aerocapture at kerbin,to go to minmus.The difference is usually small,though,as the orbits are usually quite eccentric. SSTA 1(the piston one):Nope.On the next day I remade it using pretty much the same principles but I also figured out I didn't need a piston after all.There are radiators that work in fairings(they are also lighter),fuel cells and rtgs were already required for mining on the outer planets,the two planets that would benifit from parachutes also have low gravity(you might want to use the oxidizer engine on duna),and the landing gear wouldn't fit in the fairing anyways. SSTA 2:Yep! Wait,actually after your question,I got reminded that no,the front control surfaces were not actually shielded thermally by the delta wings.They went up to much higher temperatures than the delta wings,suggesting the delta wings did not shield them. Mb I need to go read how thermal occlusion works... (I'm planning on making a heat shield wing SSTA 3.I would have to figure out how to change the center of lift in flight,because the center of mass is going to change quite a lot(this is an ssta powered by things other than xenon,nuclear power,reaction wheels,and the wraith of the kraken(https://www.youtube.com/watch?app=desktop&v=wOlMlRf9qvo&t=1s).the COM is going to change.at the very least,releasing or getting a payload would change it quite a lot.) (I already know that you could roll in the roll direction to fix some ascent rate problems,but i'm not sure in what cases that works.(SSTA 2 has the center of lift behind the center of mass with any payload and fuel load.That's better than having the center of lift occasionally ahead and causing problems,but I don't think that's the first thing to worry about on a craft with a ridiculous LD ratio)) If you're talking about SSTA 2,let's go to that topic to talk about it ig (iirc something in the rules about not hijacking topics or smth)

https://imgur.com/a/eKor0Nn https://kerbalx.com/d4s_over_dt4/ssta-2 Oxidizer drainable in case you have too much(for example,when launching from kerbin(and most places) you don't need any oxidizer.It's basically just there for tylo.) Heavy use of drag occlusion and part clipping.For example all the fuel tanks(excluding the wings,which btw are better than the delta wings in terms of dry mass ratio and equal in every other way.I should really start using those!) are halfly clipped into the fuel tanks in front of them,and moved towards the center. As a quick note,(go consult lt duckweed videos or smth for the full thing) engine plates occlude things attached to the nodes you are supposed to put engines onto.Fairings occlude things in the fairing(basically) and the part that falls off when you deploy it doesn't have drag when the fairing is the root.Occluded things don't have buoyancy,lift or drag,and do not receive heat from reentry heating or Kerbol.Some parts refuse to extend when occluded,and some other parts(solar panels) need to have direct line of sight with Kerbol. No torque generated by misalignment between engine and mass not important but i decided to design that in too since its easy. Payload bay easily accessable(because its always open.I'd guess normally this would cause the fairing to have lots of drag,but that doesn't happen here because of that engine plate that's shielding all the engines and that giant fairing.).The docking port is not attached to the lander can,but instead the engine plate.(A lot of other things are attached weirdly and not what they look like,too.There isn't any reason for the docking port to be on the engine plate,unlike all the other things on the engine plate,but there has to be something on that specific node.Plus,this decreases the height of the part tree and therefore increases stability!(because there are going to be a lot of stuff attached to the docking port,it would be more benificial to make this closer to the root than anything else))The size of the payload bay is limited by the length of the fairing(you could extend it,and it doesn't even matter when the starting location and the end location of the payload are both in a vacuum.) and the radius of the fairing. (the launch in the photo is a fairly inefficient one.The altitude was not appropiate during most parts of the ascent.The drag losses could definitely be optimized.) According to this chart,all easy places(not eve not tylo not moho not places without a surface)and also moho should be possible. Tylo landing/takeoff may be barely possible.You would need a ramp to jump this thing off so as to gain just enough air time to tilt it enough.It would also be easier for you if you left the liquid fuel tank partially drained.I wonder why tylo still doesn't have any atmosphere... (the other two bodies with that much gravity this thing can take off from both have breathable atmospheres and so rapier open cycle mode(which is really powerful)) Any suggestions?

CORRECTION:Rapiers work at speeds much much higher than 1300. Here's four working at >1500 and nearly melting some control fins! https://imgur.com/a/M5gRNl1 A closer inspection revealed ~1570m/s of speed and less than 30 degrees until the melting point of the fins,before my emergency pull-up.The craft eventually got to 1600 m/s before the rapiers dropped to ~90kN and I turned on the nervs. (reminder to self:next time raise the altitude earlier than nearly melting the control fins,that or make them shielded by the front wings(much higher thermal mass)) (the craft is HEAVILY shielded.Everything but the wings,landing gear,and intakes are shielded.(The intakes are attached to the engines,which are attached to the engine plate that also shields the root fairing.Meaning that the fairing and the engines are shielded,but NOT the intakes.(the places you are supposed to attach engines on the engine plate are magical and remove all drag from anything directly attached to them)This scenario,where rapiers accelerate to such a speed and melt stuff,doesn't really appear when you don't do part clipping and weird occlusion tricks.)

Yeah root fairings are pretty weird,but that's kinda the point here so