I was sort of inspired to do this by how the Chinese Chang'e 4 lander uses the Queqiao relay satellite to communicate with Earth from the far side of the Moon. If you like, you can add a command to maintain attitude after the burn. Thats it! Will keep at it, now I've got a better understanding of CommNet! Arqade is a question and answer site for passionate videogamers on all platforms. ], Maintaining control during probe atmospheric landing with RemoteTech. It assumes you have not yet established a comsat network, so that the only connection of interest is a direct link between the . Have you checked if the two antennas are in range to communicate with each other? The orbital altitude must be greater than the radius of the body you are orbiting. If you have the Comms DTS-M1, right-click on it while on the launchpad, then click the button marked No Target. Is it safe to publish research papers in cooperation with Russian academics? The only important thing is that the orbital periods of all three be the same, as the larger the difference, the sooner they will get out of position. Double-check that you have enough panel and battery capacity to cover the energy needs of your antenna(s), since RemoteTech antennas use a lot more power than the stock versions. Learn more about Stack Overflow the company, and our products. This video tutorial demonstrates how to build, launch and set up a relay satellite network in KSP. Arqade is a question and answer site for passionate videogamers on all platforms. Archived post. A minor scale definition: am I missing something? Equatorial triangle orbit above 210km. a normal antenna can connect to a relay antenna or the KSC directly. Learn more about Stack Overflow the company, and our products. Relay sat. But I find it makes sense to put fewer sats on the top, so the fairing can taper around them. How do I stop the Flickering on Mode 13h? I see in the manual it says the distance for the stock antenna (in command modules and probe cores, class 0) is 5km, and 50km for class 1 and 158km for class 3. Launch. Polar triangle orbit above 60km. Thanks, found the answer. Valve Corporation. Making three trips per body seems like a complete waste of time and resources when these satellites weight so little. Why are players required to record the moves in World Championship Classical games? The heat shields are SSTU. Check that the Delay (+ signal) display reads one minute. How can I control PNP and NPN transistors together from one pin? The best way to get multiple sats in one launch is to use the "Interstage Nodes" option on the fairings, which will let you attach multiple stacked payloads without them touching. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. Use RA-2 relays. You only really need one, back it up with a few smaller much lower-power relay sats in close orbit around Kerbin to ensure global coverage. So I am trying to build an efficient network of relay satellites to allow me to communicate with spacecraft exploring the far sides of the Mun and Minmus. Anyway, worth mentioning is that this is a very inefficient way to do a relay satellite. Polar triangle orbit above 320km. Making three trips per body seems like a complete waste of time and resources when these satellites weight so little. A relay satellite must have at least one relay-capable antenna and a probe core. Use mod filters to select craft that; will work With selected mods. Spacing - Generally, so long as any satellite can see the other two, everything will work, but placing them evenly will leave more room for error from orbital period mismatch to accumulate. Showing 1 - 13 of 13 comments How to achive a highly eccentric polar orbit around the sun oriented orthogonal to the ecliptic? load your currently installed mods. If your satellite will never go above 150 km, this is more than adequate any time you have a line of sight to Mission Control, you will be in range. But what about a larger orbit ? Can't remember if those or stock or not. Then, open the flight computer by clicking on the calculator icon below the mission clock, followed by to open the command queue. how to plan pre-network missions around your limited line of sight to KSC. I don't have the buttons to the right of the clock that are in the OP's screenshot. If you have solar panels, you need to make sure they get deployed once out of the atmosphere, or your satellite may run out of power before its next pass over KSC. Deep space coverage may not be perfect. KSP doesn't calculate a non-active crafts power usage or levels due to how the craft is handled by the game in the inactive state. I was sort of inspired to do this by how the Chinese Chang'e 4 lander uses the Queqiao relay satellite to communicate with Earth from the far side of the Moon. What "benchmarks" means in "what are benchmarks for?". Equatorial triangle orbit above 130km. A steep launch requires fewer RemoteTech-specific skills but is less efficient (and may lead to a broken rocket while playing FAR), while the flight computer gives you the freedom to build and launch your rocket how you like but requires you to pick up more advanced skills right away. By: AlexMBrennan. After t days have passed : Use RA-2 relays. Is there a generic term for these trajectories? with relay antenna you build your network. If you have another antenna, you can move the DP-10 from the satellite to the launchers upper stage, so you can discard it once its served its purpose. The best answers are voted up and rise to the top, Not the answer you're looking for? I tried launching one satellite every 46 days, but that didn't work. Equatorial triangle orbit above 250km. Doesn't save mass, but it does allow for SLIGHTLY longer satellites. This means tuning your launch trajectory so that you finish your final burn less than 280 km (27 longitude) downrange of KSC. This page was last edited on 24 March 2023, at 18:10. Missions to your homeworld's moons are required to use an HG-5 or equivalent, missions to the inner . I have bi-coupler and tri-coupler versions also. Make sure you take care of all maneuvers before you pass out of contact. Equatorial - This system has blind spots on the surface. And so far, signal will always use the best path available. Which gives t = p/(4(1 - p/k)) A quick final note : this answer supposes a series of identical Hohmann transfers for each satellite, and it does not consider elliptical orbits, nor modulos of orbital period. Especially early on, the large relay will get sent as a science probe that can also act as a relay, then later in the career the smaller relay network will get set up. I've watched a couple of videos on how to set them up but I feel like the reason why you should set them up is quite often missing from these videos. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Well actually kinf of yes. Resonant Orbit Calculator (Kerbal Space Program) Resonant Orbit Calculator Calculate the resonant orbit needed for a carrier craft to inject craft it carries, like satellites, into equidistant positions of a shared circular orbit. Such a formation will provide coverage on all of Kerbin's surface and cannot get fully occluded by Mun/Minmus. Some trial and error may be necessary if youre used to shallower launches, but the traditional 45 ascent path should work. Upload or insert images from URL. This tutorial covers the basics of launching a standalone satellite in RemoteTech. English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". Polar triangle orbit above 210km. Its antenna is an HG-5. How to achive a highly eccentric polar orbit around the sun oriented orthogonal to the ecliptic? The DP-10s main disadvantage is its 500 km range. > I like to use my polar relay as a synchronization timer in case my Draim constellation desynchronizatizes. If total energies differ across different software, how do I decide which software to use? Polar triangle orbit. All rights reserved. Please note that this page is incomplete, and requires the help of the community. Your satellite may just not be powerful enough to be better than Kerbin ground stations. :D. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Equatorial triangle orbit above 6,000km. You cannot paste images directly. You could launch them one at a time from Kerbin and do all kinds of shenanigans to get them into a common orbit (say, 100,000 km above Minmus) at 120-degree intervals along that shared orbit. How many relay satellites in what kind of orbits around Kerbin do you need to ensure you always have a connection to the KSC? You can also - if you don't want to use fairings and don't mind a draggy front-end on your rocket (hint: you should mind a draggy front-end on your rocket) you can also radially mount the satellites. Use RA-2 relays. 1 Relay Satelite in Stationary orbit in the Center of the light side of Minmus. So four 15G communication dishes on one sathave a range of 42 gm, which if I recall covers everything but Jool and Eeloo. In a mature space program, a network of commsats will help you relay transmissions in any direction, but you dont have that luxury at the start of the game. You then need to have (for 8 satellites) p/8 = t*(p/k - 1) with t the time between launches. How can I control PNP and NPN transistors together from one pin? Is there a weapon that has the heavy property and the finesse property (or could this be obtained)? I thought the gold bit was a probe core, but it's the wrong shape. To control a probe or satellite from the ground, you need a reliable communications link over which to send commands to mission control. Use RA-2 relays. By the end, you should understand: You must have researched Flight Control, which unlocks the Stayputnik probe core and the Reflectron DP-10 omnidirectional antenna. However, I have this other satellite which is out of contact with KSC, but in visual range of the relay satellite. However many Life Support mods will allow power drain from inactive crafts. For more information, please see our I would like the satellites in each constellation to be equally spaced. Send a couple small relay satellites with your probe. Let's say p is the period of your target orbit and k the period of Kerbin orbit. My rule of thumb is generally, one dish is good, two is better, if I have to do more than 4 I might want to look at sending up two probes instead. And for total coverage do triple relay sat launches for the Mun and Minmus. Your previous content has been restored. What does 'They're at four. Any clues? 1% signal strength), then it will not switch to using a relay (even if it could boost signal to 99%) until something blocks the direct signal path and forces the sat to switch. A set of twelve evenly spaced relays at around 25,000,000km. Equatorial triangle orbit above 320km. So how do you launch and control the very satellites that are supposed to help you do the controlling? they have have antenna extended and are in range but their not bouncing back signals to get full conection. Connect and share knowledge within a single location that is structured and easy to search. But adding it 40 degrees away is OK and will prevent occlusion from Mun/Minmus.). The best answers are voted up and rise to the top, Not the answer you're looking for? A high orbit is easier to work with. One long-range relay satellite in a very eccentric near-polar orbit (~80 km periapsis, ~80,000 km apoapsis, inclination near poles). The only important thing is that the orbital periods of all three be the same, as the larger the difference, the sooner they will get out of position. High-Powered Antennas. Of course the trouble in KSP doesn't have Lagrange points (which is what Queqiao orbits). Let's try it for your first constellation : Period of target orbit p = 184 days. Use RA-2 relays. So the actual separation, in time, is actually t - t2 = t - t*p/k = t*(1 - p/k). Yes, that's how combine works. Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). It brought me ~30-40 days separation. Dont forget to reset the delay to 0 when youre done! Equatorial triangle orbit above 13km. With 20 x 100GM satellites, you'd have a power of 945 GM and you'd be able to talk to a level 3 tracking station from 486 GM or to a probe with NO antenna and only the 5k onboard from about 68 MM - within the kerbin SOI, for example. What antenna are you using on the relay? What risks are you taking when "signing in with Google". Effect of a "bad grade" in grad school applications. I thought the gold bit was a probe core, but it's the wrong shape. With that option on, each probe requires either direct line of sight to the KSC or to a communication satellite which has a connection. Weaker signal (network paths shown) A Screenshot of Kerbal Space Program. In the window that opens, select Mission Control to make it the antennas target. This tutorial does not require any mods other than RemoteTech. Circular orbit - Just easier to work with (and to do the math). Use RA-100 relays. It's reasonably accurate over close-ish values to take the average, but the actual math is the square root of (the first vessel's power x the second vessel's power). A second equatorial triangle orbit at around 300,000km. So there, the separation will be of p*t/k - t, but "forward". With the fact that each antenna has a limited range, this makes relay satellites a necessity for almost every interplanetary mission[citation needed]. If you put the relays on opposite sides of a highly elliptical polar orbit, you should have very little loss of signal time. Blind spots: Having a ring of satellites leaves blind spots on the surface (poles in case of equatorial ring). Of these three, the Reflectron DP-10 is the only one that can work in Kerbins lower atmosphere without breaking off, so you must include it on the satellite (several atmosphere-safe dishes become available later in the tech tree). Given the nature of orbits, this wouldnt be too much of a problem since the satellite would come back around again, except that on that first crucial launch, you need control to circularize your orbit. Satellite exploding while in transfer orbit. Creating a satellite Start with an RC-001S probe core Underneath, add a reaction wheel and a few z-1k battery banks Add some Gigantor-XL solar panels around the outside. Has depleted uranium been considered for radiation shielding in crewed spacecraft beyond LEO? You can also slightly rotate the two bottom satellites so they are more "next to" each other than facing off. Now warp to your Ap and deploy the first relay. You can post now and register later. Really like the design of your quad-probe. For ever-higher orbits, you will only be in range in an ever-narrower circle centered on Mission Control. I'm pretty sure three satellites on the same orbit would be enough, but I haven't had a chance to try 1.2 yet. I can't see why they wouldn't be able to. Parabolic, suborbital and ballistic trajectories all follow elliptic paths. If you use CKAN, drop your 'installed-default.ckan' file here to auto select mods explain this. It only takes a minute to sign up. Setting the target now will give you one less thing to worry about in the hectic minute before orbital insertion. That way, you wont have to worry about running out of power while halfway around Kerbin. If you don't have the extra ground stations, then you can only talk to KSC, which is facing away from your ship 50% of the time. Also, it's interesting to see that in the case of p = k, the calculations divides by 0 ! The large solar panels sort of look like Gigantor arrays maybe on pipes or actuators? This is a small cost to do and allows you to range much further than KSC can pull off. Archived post. This satellite is in visual range of KSC. KSC only boasts 250G. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? The pod is a little tiny 1-kerbal unit that is perfect for small landers from one of the Umbra Space Industries mods. The DP-10 is unique among RemoteTech antennas in that it is automatically switched on at mission start, so you dont need to do any fine-tuning on the pad. Dedicated to the growth and advancement of amateur rocket scientists! Bear in mind that when it's acting as a relay, it's running on rails (unless you happen to have your currently-piloted ship parked right next to it, inside the physics bubble), which means that it doesn't actually use up electricity while it's running. Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. So, for example, if we have three satellites 120 degrees apart, adding the fourth halfway between two of them is bad, as 120+60=180 and it can still get occluded. Thank you. Rather than opening instantly, the solar panels will appear in the queue, scheduled to open after the delay. Left: A comlink-friendly ascent path. As for any KSP probe, you will need a probe core, a battery, and (once you have the tech) solar panels. How to build a satellite network around Kerbin which guarantees full coverage? It's not them. The relay sats don't need much v - just enough to put them in the orbit you want after you get to Eve. Transmission When the transmit button is pressed while reviewing experiment results, an antenna will automatically deploy to perform a transmission and then retract after completion. Use RA-100 relays. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. In fact, all you have to do is divide the period of the target orbit by the number of satellites times the absolute value of the factor 1 - p/k, Let's try it for your first constellation : SpanishInquisitor27 4 yr. ago Cookie Notice Period of Kerbin orbit k = 426 days Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? The final queue should look something like this picture (the Toggle SAS command is optional). Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? Here's how to set up a constellation of satellites to ensure complete coverage. so a relay antenna can used to connected multiple satelites and the KSC for example normal antenna - relay - relay - relay - KSC -> works relay - normal antenna - relay - KSC -> dont work #3 321 Oct 29, 2016 @ 10:12am So.. 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. The HG-5 is a folding relay antenna, it's just not very strong. We consider a smaller target orbit, so p
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