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Everything posted by Nefrums
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If a plane crashes during landing you lose the plane and the runway. When there where only one plane and one runway this was a problem, not so much anymore. Only the scale is different this time. They are not going to try to land on the only pad and take of again within a few hours on the first launch. The vidio only describes the vision on how this will work when launching/landing rockets are as easy as planes are today. We have more than one plane and one runway today. Tomorrow we will have more than one rocket and one launchpad. I think that a feasible time plan for this should be as long as it took from wright brothers to commercial flight (~50 years). Slightly longer if we don't get any new world wars to direct funds towards developing technology.
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How would you find people that what to go? It is not like if someone suggested a totally unrealistic one way trip to mars, they would instantly get 200.000+ people signing up .... or would they?
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space nuts!
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Far more likely that China does it by themselves. China is not a small country unlike the European countries, Russia and US
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I like that they used a moon gravity assist to get to mars. But how can the booster land on the same launchpad? It must either SSTO or turn around in order to do that, dV requirement looks to be huge for both of those options..
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http://www.spacex.com/webcast 18.30 GMT
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The Ultimate Jool 5 Challenge - 1.0 to 1.3
Nefrums replied to sdj64's topic in KSP1 Challenges & Mission ideas
One tip. the inline fairing does not affect the drag of the part it is closed around. That part still has normal drag, and this drag is affected by the relative size of the part infront and behind it. This is a bit counterintuitive as the part behind it is inside the fairing. So to avoid extra drag make sure the part you close the fairing around does not have a smaller part behind it. Also note that there are some bugs where some parts still generate drag inside a fairing, I think it is mostly RCS parts and kerbals in command chairs. -
Mars Colonial Transporter: What will it look like?
Nefrums replied to NSEP's topic in Science & Spaceflight
I have read somewhere that the first flights with MCT to mars would be few (4-5) people and lots of equipment. MCT would be modular design where the could have ether cargo modules or crew modules. It was a while ago I read these things and I cannot find the source right now, so I might be mistaken. -
I find it more likely that your models are wrong then that dark matter/energy exist. And when I say wrong I don't mean that general relativity is incorrect, but rather that it is not general enough. Just like special relativity it does a good jobb of explaining a special case. More general than the special relativity but not completely general.
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Mars Colonial Transporter: What will it look like?
Nefrums replied to NSEP's topic in Science & Spaceflight
After having read this maths exercise about MCT: http://planete-mars.com/what-could-the-mars-colonization-transport-mct-spacex-project-look-like-continued/ and combining that with Musks statment that ITS can reach well beyond Mars, it looks like that is a bit above what can be done with chemical engines. Will ITS use chemical engines or something more exotic? -
That solds like alot.. There should be transfer windows every 10 days or so to do it in for 1k dV.
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The Ultimate Jool 5 Challenge - 1.0 to 1.3
Nefrums replied to sdj64's topic in KSP1 Challenges & Mission ideas
@sdj64 thanks! It was actually alot easier than i expected. What should I do next? Level 2 with x10 scale and TAC life support? That might be fun. -
Why would they put fixed fins on the top of the first stage like that. That would cause the rocket to very unstable during ascent. Deployable fins like spaceX uses makes alot more sense.
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The Ultimate Jool 5 Challenge - 1.0 to 1.3
Nefrums replied to sdj64's topic in KSP1 Challenges & Mission ideas
I have now completed the challenge on level 1 in the KScale64 Kerbol system. http://imgur.com/a/BiSNM Approximate dV used: 52 000 m/s.... Kerbin ascent: 7000 m/s LKO -> Laythe : 5500 m/s Laythe Landing: 8000 m/s Laythe -> Tylo: 70 m/s Tylo landing: 2100+13000+2100=17200 m/s Tylo -> Vall: 60 m/s Vall Landing: 4500 m/s Vall -> Pol: 500 m/s Pol landing: 900 m/s Pol -> Bop: 1000 m/s Bop landing: 1400 m/s Bop -> Kerbin: 6000 m/s Mods used: All allowed part packs was installed, KER, MechJeb, Joint Reinforcement,Precise Node, KSkale64 -
The Ultimate Jool 5 Challenge - 1.0 to 1.3
Nefrums replied to sdj64's topic in KSP1 Challenges & Mission ideas
It is best to discard the heavy landers first. That is do Laythe and Tylo first. I usually do Laythe first as you can get from Jool intercept to Laythe orbit for free (gravity assist from Tylo into Jool orbit with PE close to Laythe orbit and then aerobrake at Laythe). Laythe -> Tylo transfer can be done for 10-20 m/s dV. By using a gravity assist from Vall to match Tylo orbit the dV required to get into Tylo orbit can be reduced from ~100 to ~10 m/s. -
Another landing done. Main album updated.
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Bang sound before the explosion? What would happen if a bullet ripped through the fuelline... It was probably an alien with an alien sniper rifle! *Puts on tinfoil hat* Edit: Yes bullets from alien sniper rifles are slower than sound!
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The Ultimate Jool 5 Challenge - 1.0 to 1.3
Nefrums replied to sdj64's topic in KSP1 Challenges & Mission ideas
@Firemetal Try the Kerbal Joint Reinforcement mod, it helps with the wobble. Here is a small teaser of my ongoing mission. A 340t mothership cursing at 6000 m/s in LKO: Full progress report: http://forum.kerbalspaceprogram.com/index.php?/topic/147173-jool-5-on-a-bigger-scale/ and here http://imgur.com/a/BiSNM -
Yes, it turns out that a large inflatable heat shield makes for a good flotation device.
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Full album of the mission so far including Laythe landing and ascent. http://imgur.com/a/BiSNM
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I went back and redesigned the engine section for the mothership. It now has 5 quad nukes. I have started the mission and done one landing: Reentry on Laythe was really hard, I had to make extra pass through the atmosphere before the final descent to avoid the heat shield overheating. Reentry speed was ~6500 m/s, and that is when starting in Laythe orbit.