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The challenge here is to build a craft that can get to orbit twice without refueling, staging, or docking. Score is based on mass - the lighter the craft, the better. Bonus cookie points if you make an all rocket craft. More rules: You must come to a stop at KSC or the ground nearby between orbits. (Screenshot at 0 m/s on the ground). Scoreboard: camacju - 9.2 tons

Weight is a force: f = ma & gravity is an acceleration, so weight = mass * acceleration but this should be a ratio: weight = mass * environment_gravity / 9.81 m/s. For convenience, orbit should be weightless. A 200kg mass weighs 200kg on Earth/Kerbin but 33.2 kg on the Mun. In a low g vacuum, the mass is mostly weightless. So you can more easily displace the mass in orbit and on the Mun, than on Kerbin, because your kerbals are able to do more work (displacement of mass) with the same effort (energy). Hence, the mass carrying capacity should change relative to the kerbal's environment: weight carrying capacity = mass * environment_gravity / 9.81 m/s. The only catch is that the more mass a kerbal carries, the more energy (eva rcs) the kerbal expends regardless of environment. I want my kerbals to carry two jet packs in orbit and on the Mun, but not on Eve, Kerbin, Tylo, etc. Please fix.

Hello, I am Johnster Space Program and today I present to you my new challenge, lowest mass to duna and back! The challenge requires you to go to duna and back (easy enough) but with the lowest mass rocket possible! This is my first time making a challenge like this, so if I should change anything, tell me. Requirements/Rules: - All Participants Must Show Either Photo or Video (YouTube) Evidence (Including VAB Total Vessel Weight) - No Mods Allowed (Except for KER) - Maximum Vessel Weight Is 150 tons - Refueling IS Allowed, As Long As Total Refueler and Other Rocket Mass is 150 tons or less combined - Due to Request, Command Seats Are Now Allowed! - Only VAB and SPH, but you must somehow launch your SPH Vehicle on The Launchpad, Not Runway. Wings Are Allowed - Pods and Chairs Have Separate Winner Categories Now - No Cheating (No Cheat Menu, Infinite Fuel, Etc.) How Scoring Works: - For Every 1 Ton Less Than 150 Tons: +5 points - Getting To Duna and Back: +150 points - Lowest Mass Contender: +25 points - Ike Landing Bonus: +40 points Participants (In Order): @mrhexed @Aeroboi @Mythical Donuts @Kergarin @Johnster_Space_Program @GRS @Martian Emigrant @astrobond @herbal space program @sevenperforce @jinnantonix @A Random Kerbonaut Winners for Command Pods (Highest To Lowest Points): @Kergarin: 5.8 tons: 936 Points @IncongruousGoat: 11.6 tons: 842 Points Winners for Command Seats (Highest To Lowest Points): @astrobond: 3.95 tons: 948 Points @GRS: 26.2 tons: 929 Points For Everyone That Has Successfully Completed The Challenge And Is A Winner, You Will Be Awarded This Badge By Me: Have Fun, And Good Luck!

*Minor Notification • The author is very unlikely to be familiar with English, so grammar is likely to be destroyed. • More than 95 percent of this article has been translated into Google Translator. •This article was uploaded during the writing due to a mistake by the author (;;;) ***Important Notification • I am not the "original author" of "this Craft" and the "original Korean text" of this article. The "original author" was a user named "HoDeok(호덕)" of Korean KSP Forum, and this article is translated into English with permission of the original author. • The author of this article are not familiar with the Western forum system. If there is a problem with this article (?) It will be deleted or modified immediately. • "original auther"s message : This rocket was made by mixing two rockets developed by Turbo Pumped. ______________________________________ <Light & Powerful! Eeloo and back with 2.3 ton tocket> World Record! Eeloo is the planet of Pluto in KSP. The distance is so long that we need a big rocket on the roundabout. Because it is so difficult, I did not go there for half a year, So I decided to go there today. Of course, I'm bored if I just go., let's try mixing some rockets developed by others! 1.7 ton minmus rocket by Turbo Pumped + 2.7 ton Eeloo rocket by Turbo Pumped FUUUUUUUSION!! Creating a spaceship is easy, is not it? It took only 8 hours to fuse properly. The weight of this spacecraft is 2.3 tons, and when it is astronaut, it is 2.394 tons. Wait, Kerbals are 90 centimeters tall, 94 kilograms, it's obese. Maybe it's because of the weight of the spacesuit. Liftoff! This plane can speed up to 700m/s with only two J-20 Juno engines. It's an engine that's normally used for low-speed airplanes, and it's amazing how fast it is. At full speed, slowly raise the nose and ignite the 48-7s spark engine at an altitude of 10 km! Take off the used fuel tank and keep moving! Using an ion engine to make the final acceleration, LKO Reached! I don't want to get too long, so I'll just write it down. First, get out of Kerbin, get help from Eve's gravity, Get another gravity assist by Eve, I went into the Jool System and got gravity assist from Jool and Laythe. It's been a long time since I've been on the Orbit for Eloo, so I've had a lot of trial and error. It took 41 years for the Kerbal time. But it's better than not getting there. Approcahing Eeloo! Eeloo is about five times farther from the sun than Kerbin, making solar panels less efficient than 1/35 or 1/36. So, the ion engine that eats a lot of electricity is often turned off. Turbo Pumped solved it by taking a huge battery! That's a great idea! Touchdown! It's been seven months? It's been a long time since I went Eeloo! It's been a long time since Kerbal put a flag on the frozen ground! I think Kerbal misses home a little. Forty-one years is a really long time no matter how happy a creature is. Good. We don't have much to do here, so let's go home. Two small solar panels have charged up electricity, so getting to Orbit is a piece of cake! Low Eeloo Orbit Reached! Keep accelerating, make an orbit that meets the jool, With two gravitational help from Jool, Go to Duna, KSP's Mars! I came here because I thought my head would explode if I got more gravity assist. It's been more than five hours since i started the game. So i took a less fuel-efficient but easier way to get back to the Kerbin. As shown in the picture, a single collision in the upper atmosphere of the Duna, can create an elliptical orbit of the Duna! Hahah. It's the best way to save 1500m/s. Final Burn To Kerbin! Kerbin in 84 years! REEEEENTRY!! Many parts were smashed, but the spacecraft managed to decelerate safely! Kerval's parachute for the last time, Landed safely? He is ALIVE! Phew... It's been a long time since I've been a Eeloo mission. I've had a lot of trial and error. It's the longest mission I ever had. *Crying* Instead, I got a sense of how to do Gravity assist, so I got a lot of things. Turbo Pumped's Youtube Channel: https://www.youtube.com/channel/UCrfWUNq3XCKoAo_E8JMJpfg Craft File: https://steamcommunity.com/sharedfiles/filedetails/?id=1651455293

I've built a big ship for a manned travel to Mars.It's powered by 3 nuclear engines with Liquid Hydrogen as fuel.The complessive burn time is around 2 hours and the fuel is just enough to the whole trip to Mars and return ( no errors or DeltaV waste possible).So , what's the best way to save as much DeltaV as possible in maneuvers by doing them efficently?Are there any rules that I have to know on how to save fuel? The ship plays a lot on throwing away empty tanks ( life support and fuel), squeezing DeltaV to make the vehicle lighter.Start mass : 600 tons. End mass (from Mars to Earth): 150-200 tons.

Oh I had an error reading a game data. Please delete this post. Sorry.

So anyone know a good way to send heavy payloads interplanetary? I would like to send a big submarine to laythe. The submarine is < 20 tons. Anyone know a good way to carry this all the way to laythe?