ChrisSpace

Are you planning to add an open-cycle gas-core NTR? If not, you should make one! Here is a basic idea I had: TSARBOMBA open-cycle gas-core NTR mass: 200mT thrust: 3500kN isp: 3600s

Okay, some more propulsion-related calculations: Each vehicle has a 130mT nuclear propulsion stage using an NTR similar to the NERVA. the NERVA had a mass of 10mT, and the tank/docking/RCS systems will probably add another 10mT. This means our vehicles will each have 110mT of liquid hydrogen propellant, and tank dimensions of 10m wide and 19.767m long. According to the Dv map I posted, a transfer from LEO to low mars orbit requires 2440 + 680 + 90 + 390 + 670 + 340 + 400 + 700 = 5710 m/s of Dv. With 110mT of propellant and an isp of 825s, this means I should be able to calculate how much payload the mission can allow. I have been looking for a rocket equation calculator which uses propellant mass and Dv to find the dry mass, but all the calculators I find only use the wet/dry masses and not the propellant/dry masses. Can anybody help?

Granted, you now know exactly everything that will happen for the next billion years, including your own future. However, your mere knowledge of the future means that what will happen in future is constanly changing, making your ability useless. I wish I had more people viewing my youtube videos.

New dilemma: In my stock series I really want to add just one mod (DSEV) for late-game gameplay. Is it okay to add just one mod to my 'all-stock' series?

It was once part of soviet Russia, and not-soviet Russia still launches their rockets there. it also has a lot of uranium WDYKA India?

OMG MOON HYPE! ... oh, this is over a decade away. still, hype!

Well, when you get down to it there are two kinds of nuclear fusion engines: Ones that use heat from the fusion reactor to throw out hydrogen propellant (eg the Discovery II) and those that use the fusion reaction as propellant directly (eg Icarus ghost ship) Here is a quick comparison of some fusion engines I found on atomic rockets and elsewhere: ASTEROID MINING CREW TRANSPORT mass: under 133.4mT fuel/propellant: D-D fuel / Hydrogen propellant thrust: 96kN isp: 10,000s HOPE Z-PINCH FUSION mass: 95.138mT fuel/propellant: Deuterium-Tritium fusion + Lithium6 fission fuel / no other propellant thrust: 38.12kN isp: 19,346s DISCOVERY II mass: 310mT fusion reactor + 6mT magnetic nozzle divertor + 30mT energy conversion + 11mT coolant system + 6mT fuel coolant and injector fuel/propellant: He3-D fuel / Hydrogen propellant thrust: 18kN isp: 35,435s ICARUS GHOST SHIP mass: 1000mT fuel/propellant: D-D fuel / no other propellant thrust: 1600kN isp: 540,000s

For the tanks, Wikipedia says molecular liquid hydrogen has a density of 70.85 kg/m3. So each 1mT of the stuff would have a volume of 14.114m3. If our tanks are 10m wide, this means each 1mT of propellant will add 0.1797m of height. As for the NERVA, Atomic rockets says it has an isp of 825s, a thrust of 49kN and a mass of 10mT. This all sounds doable.

http://forum.kerbalspaceprogram.com/threads/120135-Pen-and-Paper-Design-SLS-and-Falcon-Heavy-Launched-570-day-Mars-Mission This is my favorite plan.

Are you ever going to have a downloadable .craft file for the Discovery II replica above? I would really really love that.

Okay, I have now uploaded my new KSP 1.0 ep1 video. I will utilize the above advice in my next videos.

No, in fact it is quite clever. I was under the false impression the MAV would be where our crew lived for the whole surface expedition. Other than that, everything seems good, I am still curious about the NTR hydrogen tanks. Are the volumes of the tanks just a random guess or are they calculated using the density of liquid hydrogen? And what kind of NTR is being used? A NERVA?

Oops. Okay, I did not see that. Anyway, I have a few more ideas/suggestions: - I am pretty sure the mega SLS can only launch 130mT into low earth orbit, not 150. And the block I and IB only lift 70mT and 100mT, not the 100 and 130 you stated. So the exact module masses and launch vehicle types for them will have to change around a bit. - You mentioned a Methalox-propelled SSTO lander using ISRU to refuel on the surface of mars. Entering mars orbit from the surface requires about 3650m/s of Dv, so a lander with a full mass of 40mT using a 'raptor' engine would need 25mT of Methalox fuel capacity, leaving only 15mT for the structure, habitat, engines, etc etc. Luckily this can be partially solved by the fact the falcon heavy can lift not 40 but 53mT into low earth orbit. Our 53mT lander will need 33mT of Methalox fuel, giving a slightly better 20mT for everything else. If we use the mega SLS, our 130mT lander can have a dry mass of 49mT, which will be enough for our 8-person expedition. - Instead of using 'tin can' modules for the orbital vehicle, it would be a much better choice to use Bigelow Aerospace's BA 2100 module. It can easily be launched on an SLS, can accommodate the crew of 8 easily and is more radiation and micrometeoroid resistant than other designs. more info can be found at https://en.wikipedia.org/wiki/BA_2100 - I still cannot see any flight timeline. Using the launch windows link provided, what do you figure the (TMI, Mars arrival, Mars landing, Mars liftoff, TEI, Earth arrival) time schedule to look like? - Are the sizes of the NTR propellant tanks just guesses, or are they based on the real density of liquid hydrogen? - In case Orion can't be used, there should be a backup plan to use the SpaceX Dragon V2. Similarly, there should be a plan to use China's LM-9 (100mT payload to low orbit) as a backup for the SLS

Okay, KSP ep1 (take 2) has been recorded, but I still need feedback from my previous series. What could have made my videos better? What should I talk about? Should I talk more or less? Should my videos be longer or shorter? Should my editing be less choppy? Should I have subtitles sometimes? Should I do a modded series? Should I act funny or serious? I NEED feedback and suggestions!!!

Chances are somebody will, we just need to make sure this thread doesn't die until they show up.

I like the plan. This could work. Just a few suggestions: - I did not see any hard stats on the masses, Dvs, timing, radiators, solar panels, radiation shielding or even crew amount. As a start, try the following links: Dv map: https://dannypagano.files.wordpress.com/2013/12/wgoy3qt.png Launch windows: http://clowder.net/hop/railroad/sched.html Dv calculator (if the nuclear engine is supposed to be a NERVA, set the specific impulse to 825): http://www.strout.net/info/science/delta-v/intro.html If any of the spacecraft will be using artificial gravity, use this to find out how fast it should spin: http://www.artificial-gravity.com/sw/SpinCalc/SpinCalc.htm Very important information about radiators, habitat modules and power sources: http://www.projectrho.com/public_html/rocket/basicdesign.php Very important information about radiation and radiation shielding: http://www.projectrho.com/public_html/rocket/radiation.php - Is there any way you can present this in a better format? pencil-and-paper is a bit hard to read and stuff.

Wait, if you're basing these designs on real-ish spaceships, I might have some suggestions (with the same tech level feel as discovery II): (The HOPE, Z-pinch and VISTA spacecraft are shown in the 'realistic designs' page in Atomic Rockets, in case you want more information) - The HOPE magnetoplasma and FFRE spacecraft - The HOPE Z-Pinch fusion spacecraft - The original D-T Vista, from which the KSP interstellar one is based - The fusion-powered Pegasus and its lander probes from Space odyssey: voyage to the planets http://www.bbc.co.uk/sn/tvradio/programmes/spaceodyssey/pegasus.shtml - The following fusion-powered interstellar starships http://www.icarusinterstellar.org/a-ship-called-resolution-project-icarus-workshop-update-14/ http://www.icarusinterstellar.org/meet-firefly-project-icarus-workshop-update-24/ http://www.icarusinterstellar.org/project-icarus-workshop-update-34-the-ghost-ship/ http://www.icarusinterstellar.org/ultra-dense-deuterium-fueled-starship-project-icarus-workshop-update-44/ http://en.wikipedia.org/wiki/Project_Daedalus

I have Togo Now... What have I done...

10/10 When another aircraft collision inevitably happens it will most likely kill less people China never becomes communist - the cold war is very one-sided and therefore ends earlier - China never becomes anti-American Pros: China is a democracy, Taiwan is united with China, America has another large key ally, Without china's support, North Korea collapses and the peninsula is unified Cons: Since NK collapsed in the 20th century, the interview is never made. other than that, nothing I can think of

Any progress?

When me and my mum were driving home from the doctor: 'Kenya speed up so we get home faster' 'We are Ghana be home it just a second' 'But I'm Hungary. Do you think you Congo faster?' 'I'm China get home as fast as I can! I Canada go any faster!' 'Oman this is boring' Iran over here to say this.

This is pretty much the exact topic of my first blog post, it is quite detailed and I think it should be looked at My top 7 options for the first landing: 1. SpaceX - they have enough money to go there, they have the technology to go there, and they really want to go there. 2. China - they certainly have enough money to go there, and they have many reasons to go there 3. India - like china but a bit less 4. An International Effort - way less likely than people seem to think, especially with all the political tensions and rivalry between the space-capable nations of the world 5. NASA/Russia - only possible if they get a long string of presidents wanting this to happen 6. Mars One - while not a scam, the plan is so underthought, and funding so little, that this is going below even NASA and Russia 7. A private company that does not exist yet

The idea of this mod sounds brilliant, three questions: - Does this add/plan to add solar sails, or just a way solar sails can operate? - Does this work for other low-thrust propulsion methods (for example, does it make a 10-hour burn practical?) - Atomic rocket's engine list has a large section on solar sails, have you looked at that?

Edit: ignore this post

He keeps the Kraken as a pet