king of nowhere Posted June 5, 2021 Share Posted June 5, 2021 Quote history shows that time and time again things 'couldn't be done' and they were done. Boyan Slat, presenting the first realistic project for cleaning oceans from plastics This is progress. This is what progress is about. And I got thinking on that quote many times in this community, upon seeing how things that were previously assumed impossible were eventually done, and are now considered commonplace - or, at least, hard but feasible by anyone skilled. So, I'd like to collect a bunch of achievements that were previously assumed impossible - including quotes from skilled people claiming it was impossible - until someone managed them. As a testament to this community, its members, and their inventiveness. extremely low-cost interplanetary transfers with gravity assists you can go places cheap. but to the point of going all the way to Jool with less fuel cost than a normal intercept with Mun? On 5/25/2021 at 8:16 PM, herbal space program said: I don't know about in theory, but in actual play I believe the long-standing dV record for just reaching the Jool system was something like 1050 m/s, using a Mun-Eve-Kerbin-Kerbin-Jool route, and setting up that first Munar assist so the transfers line up is a nightmare. There's also the matter of the plane change going to Eve, because finding a transfer window exactly at the nodal point may not even be possible. On 5/25/2021 at 8:28 PM, camacju said: That's why it's better to eject into a resonant orbit with Kerbin using the Mun assist, instead of trying to time the Eve transfer. Then you can swing by Kerbin again to fine tune your transfer. Just leave Kerbin 11 years before the Eve transfer window and the Mun assists will take care of the rest (including plane changes). Getting to Jool for about 850 m/s is fairly routine now using multiple Mun gravity assists Eve ssto A bit harder here to find quotes claiming it's impossible, because it's the kind of thing people generally brag about on youtube. Still, when I asked about it a year ago, some people straight up told me it was impossible. then they deleted their comments after youtube videos disproved them. Nowadays the "standard" approach - propellers and wings until 15 km, vectors to get out of the atmosphere, nervs to circularize - is widely known. additionally, someone managed not just to make an ssto, but to make a purely rocket-based ssto (admittedly, it launches from the highest point on eve) with enough payload to return to kerbin on ion engines kerbalism grand tour One of the most well-known mods, kerbalism ramps up the difficulty with all manners of realistic inconveniences like life support, malfunctions, radiations. And many people assumed you couldn't do anything too fancy with it. On 12/17/2020 at 5:25 AM, Gotmachine said: If your goal is to make self-sustainable bases, yep, it is hopeless. In fact, even doing "basic" manned missions outside of the Kerbin SOI is quite hard. Kerbalism difficulty balance make what is achievable in KSP roughly in the realm of reality. I've yet to see proof of a successful manned mission to Jool with Kerbalism. And I believe that there are only a handful of people that can claim a successful mission to Duna. after the first successful attempt, people interested in the challenge know you can survive parts breaking up with a redundant design and you can survive radiations with a mixture of proper design and careful trajectories. nowadays there are a half dozen "kerbalism grand tours" among the mission reports. lithobraking from mun orbit Nobody doubted that it would be possible to come to a full stop from minmus orbit without using rockets, just by slamming into the terrain with some heavy landing gear. Those who tried it and survived generally assumed that the 150 m/s is the top of what landing gear can survive. Not many people would have guessed it would be possible to do it on the Mun, going four times faster... On 5/9/2021 at 6:57 PM, king of nowhere said: i tried to land on minmus from orbit, it took a bit of trial and error but it could be achieved. Then i went for the next bigger body, Bop. that was much harder, in part because of the topography. But I eventually made it, after hitting the ground at 187.1 m/s. Next step would be trying on Ike, but I doubt it's possible. I call for everyone to contribute to this list of things that were generally assumed impossible - possibly including quotes from people saying it's impossible - and then being done. Quote Link to comment Share on other sites More sharing options...
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