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Found 84 results

  1. Just wondering if any maths / rocket surgery people out there that might be able to point me in the right direction for formula to work out the following for an airless body in KSP. The question I'm trying to work out is for the bodies in the game that allow a Synchronous orbit, and given the limiting factor of SOI of the body, how close could I get to the surface with a vessel using an Eccentric Geosynchronous orbit? ie something like a Molniya orbit that had the same sidereal duration as the body it was orbiting.
  2. Best Landing So Far

    I know others have done it and I won't be the last either but I was particularly please with this result. Having rescued Parey from the suface of The Mun and Oremy from orbit of the same I let them have a few hours R & R and snacks aboard the space bus docked at Babylon K ( Only Parey was granted access to the K proper due to the all female crew, no boys allowed! ). Once refreshed they were taken by Space Bus ( previously Level Up Bus in another thread but renamed ) to Kerbin Orbital Station where they transfered to a rocket bus flown by Valentina. As Valentina had a go at throwing the ship at the KSC. The results were better than expected. At 7km up things were looking very promising! Then at 1100 meters she remembered that she should probably open parachutes at this point. The final result being a gentle touchdown on the landing gear just 1.8km from the VAB
  3. I am designing my first Mun Lander. I am using Kerbal Engineer Redux and I've had a look at the dV chart. I've decided on a 3 stage 2 Kerbal mission. 1) The lifter - Carries the two other stages to LKO ~ 3500dv 2) The transfer / return stage - Carries 2 Kerbals Lander will be docked with this. ~1500 dv 3) The Lander - Carries 1 Kerbal - has a materials bay, goo, temp, barometer, and seismograph. 1400dV (600 dv land 600dv up and 200 spare for orbit maneuver and docking ) If I'm understanding this correctly then I need about 600dV to reach land on the Mun from LMO and presumably the same to get back up plus a safety margin for docking? And I use KER set to Mun to calculate my total dV?
  4. Hello everyone, I'm having some issues while playing ksp, when my ship (stock or costum) is in orbit arroud any planet or the sun my screen gets black. I can still control the vessel and the navball and other instruments are still functional, however I can't see my ship nor the planets, sun, etc. I've recently noticed that when I engage the vessel engine or RCS thruster, the gameplay gets normal again. Does anyone has faced this problem before? I took some pictures of the problem, maybe it will help. https://www.dropbox.com/s/z5v0vbmz02s73qe/In orbit 2.jpg?dl=0 https://www.dropbox.com/s/fgiy9eft3904kia/In orbit.jpg?dl=0
  5. I have a couple of questions about the above. When circularising my orbit above Kerbin should I also be checking the inclination and if so what should it be at for the best transfer orbit to Mun? Often when I burn for the Mun I find the encounter is going to kick me up at around a 30-45 degree angle. Going for a capture burn at periapsis then puts me in a heavily inclined orbit around Mun. This is ok for tourists and small satellites when I have plenty of dV to spare but I'd like to do things more precisely. May I have some tips on getting a more equatorial orbit around Mun?
  6. I have no idea what has happend to my map, but it is really annoying. I have tried to restart the game and uninstall some mods, but it still looks like this
  7. I'm losing my mind. I have a contract to match orbit, and I've matched it visually and painstakingly precise, but I'm not getting credit. I'm matching the correct direction of orbit: Any ideas? Here's a screenshot:
  8. Hello everyone, Is there a way to make orbit in RSS? I was worst at making rockets (probably) and I hope you guys can give me some tips.
  9. Transfer Orbits

    I don't understand the difference between a hohmann transfer orbit and a bi-elliptic transfer orbit. Can anyone explain please?
  10. I have a problem building a new unmanned satellite for a mission. I tried once launching the saved ship design i used for another mission and when the orbit was identical i noticed that the new unmanned satellite wasn't ticked. Then i even tried with testing new ships, built from scratch and different names, even flags but no result. I've found nothing that help in any similar case...any ideas? screenshot:http://prnt.sc/f5nqjm Thanks in advance
  11. I haven't checked any of this out in the game because I just thought about it, and not at home. In my head, what I'm about to suggest shouldn't work (and I'm sure it doesn't) but I don't know why! Kerbin's rotational velocity is 174 m/s, and we all know the reason we launch East is because we already have that horizontal velocity, so why not use it. So even if you launch straight up, with no gravity turn at all, you still have that 174 m/s horizontal velocity. Now, presumably there is some (very high) altitude where the required orbital velocity is 174 m/s. So, if you launched straight up, set apoapsis at that specific altitude, and coasted all the way up to it - when you reached the very peak of your trajectory, your vertical velocity would be zero, and your horizontal velocity would be 174 m/s. And if you have a horizontal velocity of 174 m/s, and the required orbital velocity at that altitude is 174 m/s... then why wouldn't you be in orbit?!
  12. Sub-Orbital

    Why does Kerbal tell me that I have recovered a vessel after sub-orbital flight even though I have clearly been orbiting? I am new to this game and recently launched my first orbital rocket, which I sucessfully orbited around kerbin for 15 days, but upon reentry and retreival of the capsule, it said that the vessel was retreived after sub-orbital flight. What am I doing wrong?
  13. bda orbital weapons

    Im looking for a bda add-on that adds weapons for orbital combat. I was wondering if you knew of one.
  14. Comm Orbits & Range

    Hi, i'm having some maths problems. Can anyone explain my error. I've ended up with relay stations with 32 HG-5 High Gains. (Based on maths, but i guess if this is wrong then that is too). Using the wiki I think the power of each relay is: (5*10^9)*32^0.75=6.73*10^10 As all relays are identical that gives a maximum link range of 6.73*10^10. Using the signal strength formula at a range of 2.20*10^10, i get a effeciency of: 1-((2.20*10^10)/(6.73*10^10))=0.67 0.67*0.67*(3-2*0.67)=0.75 (=75%) So, if I want a seperation of 2.20*10^10 in an equilaterl triangle arrangement I need an orbital radius of: (2.20*10^10)*(sqrt(3)/3))=1.27*10^10. I now have three such relays at a Kerbol Orbit of 1.27*10^10, yet not only are they not at 75% power, they are not linking at all. My initial hunch is that some of the measurements are from sun centre and some are from sun surface, but that only affects the third significant figure and smaller, reducing effeciency to 74%, not 0%. What is wrong with my maths (not just the aesthetic choice for the 32 antennae) Thanks in advance, RBS.
  15. Hi guys, so I was flying my plane when i had something (a satellite) in orbit at 80 km. I believe I saw that satellite from my plane, as a fast moving object. Is this possible in KSP mechanics?
  16. After re-installing KSP after a while, I noticed a strange bug where all oribts are displayed wrongly: planets are not on their trajectory and AP and PE signs are also off... I only use mechjeb, KIS, KAS and tweakable. Thanks for your help.
  17. I'm using SCANSAT on a 1080 screen. The accuracy required to meet the contract is sub-pixel (aka impossible to eyeball). I have no idea how the heck I'm suppost to do this. Kerbin, above 70km, sub-orbital (I just drop my perapsis under 70km for a moment as I pass- works on the possible contracts.)
  18. Mun Scraping

    How low can you go? This is a challenge to see how low you can get a satellite (or other spacecraft) to orbit the mun. The orbiter should be stock, but mods are allowed for delivering the orbiter to the mun. The challenge is about orbiting the mun, not getting there. Post your apoapsis and periapsis heights, and some pictures of your spacecraft and orbit. The final orbit should be sustainable. Your score is the sum of your apoapsis and periapsis heights. Lower scores are better. I finished my attempt with a score of 12111 meters, and will be posting some images shortly.
  19. Hi! Some friends and I are trying to fly to Minmus manual mode IVA without map view. We're therefore needing to plan out all our manoeuvres ahead of time. One that is giving us difficulty is the plane correction. We launch equatorial, but need to correct to a 6deg inclination to match Minmus. The burn itself is easy enough, but getting the timing right in order to be co-planar is problematic. We are using telemachus to give us telemetry (aka API access!) and so can see our various orbital parameters. We know that we need to burn at the ascending node - and we have the longitude of this relative to an arbitrary reference line. However, we're not sure how to see our vessel's own longtitude as measured from this same reference point. The longitude offered by the api/telemetry appears to be relative to the orbited body's prime meridian, which of course is rotating in inertial space. Looking at wikipedia, it seems that the way to do it is to take our argument of periapsis, and when our true anomaly is the negative of this, we make the plane change. We'd do this twice: once to correct launch errors (using the vessel LAN, INC->0), a second time to match minmus (using the minmus LAN, INC->6). Does that sound right? Is there any way to time a launch such that we can insert directly into a minmus plane (applying our inclination burn during launch)? Without an orbit, we'd not have a true anomaly or AoP, so we'd not know when we were at the LAN/when we were coplanar with minmus....
  20. Rendezvous help?

    How do people ever figure out where other planets and stuff are going to be? Help? Haven't even been able to get to the moon cause of this
  21. Rules: 1. No Dirty Cheating Alpacas (no debug menu)! 2. No mods 3. no kerbals required 4 post screenshot of craft on launch pad, and one for each stage and in orbit right click on tank to show it is full 5 Impress me E.g post videos post screenshots below
  22. For this challenge, you must put a vessel into Kerbol (sun) stable Polar Orbit, between 26160 km and 1500 km. RULES: No mods are allowed, except for informative mods that doesn't provide a real advantage. Only stock parts allowed No tricks like infinite fuel, disabling heat, edit cfg, etc, are allowed There are limits in cost, parts or stages, you can even assemble your vessel in space if you want. The vessel must be able to transmit data, so it should be able to generate power and it should have an antenna If you want, you can use a refuel station or mine resources, if you believe that it is necessary. OPTIONAL (I do not know if they are possible) : You must turn back to Kerbin, to recover some scientific data You have to carry a crew of 3 Kerbin (a Pilot, a scientist and an engineer) and transmit a crew report from Kerbol Recover all parts of vessel, except for consumable parts (like parachutes, heat shield, stack decoupler, fuel ...)
  23. Hello everyone! Today I was wondering how one can know the speed of a craft orbiting a planet, after a certain amount of time. For example, if I'm at the periapsis, what would be my speed after 2min? If I'm going at 1500km on a certain orbit, what would be my speed after 5min? It would be easy if the speed would change linearly while going from the apoapsis to the periapsis or from the periapsis to the apoapsis, but I feel like it doesn't work that way. Bonus question: How does the speed change in an elliptical orbit?
  24. Your goal is create Solid Rocket Booster SSTO and upload it here. No RCS system allowed. But you can use reaction wheels. Your SSTO must to be a plane. And if you can, it must deliver tiny cargo (300-500kg) You don't need to de-orbit ship. Just get the Kerbin Orbit Good luck!
  25. Get a space plane into a orbit (it doesn't have to be perfect) using only air breathing engines. HINT:You can do a speed run in the stratopause and burn prograde just before you leave the atmosphere. It can be a bit challenging to get enough speed to force glide on prograde long enough to complete your orbit. Tell me if you have another idea of how to do this. Insert screenshots or videos of your plane and its orbit!