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Everything posted by Jesrad
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Congrats ! Second time's the charm. Did you consider using a ion-driven lander for Pol and Bop ? Back when I did my own Jool-5 it was doable (with landing seat in lieu of a pod).
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Power for ISRU on Pol
Jesrad replied to davidpsummers's topic in KSP1 Gameplay Questions and Tutorials
I did the maths back then. -
Axions. An hypothesized form of dark matter. After reading Tajmar's paper I've been starting to think it might really just all come down to some thermal outgassing effect or some such, though. And the accuracy in predicting the measured thrust would just be good (but blind) empirical modelling.
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Private ownership of mineable asteroids moved into Earth orbit
Jesrad replied to Findthepin1's topic in Science & Spaceflight
That, and stealing an asteroid from under someone else's hands would be an act of piracy. <- actually a jurist, though it is not my main occupation and I usually work on jusnaturalist theory applicable to intellectual works. -
Private ownership of mineable asteroids moved into Earth orbit
Jesrad replied to Findthepin1's topic in Science & Spaceflight
Sure you can. If you can move it, you own it. As for dealing with nations' legislorrhea, all one has to do is declare the whole asteroid has been made a ship, or is now the craft's salvage cargo. And then, it's all just Law of the Sea. Yeah there is, it's actually called "international law", or "jus [inter] gentes", and is the legal basis routinely used to put the nazis and other war / human-rights criminals on trial, and solve jurisdictional / sovereignty disputes, among other things. -
I thought it was a KWh/sol ?
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Today I discovered that Google does not know pirate-ninja as a unit
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Thank you for the suggestion, I will look into this
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Then, it was time for MOAR SCIENCE: And some refueling, too: And now, CONTEXT: The last time I did a rover mission was back in 0.24, when I visited every biome of the Mun with the same science lab rover. Which took forever. I had landed near the creviced crater, then went north-west to the other crevice through the canyon and crater bottom, then up the "walls" and onto plateaus, circling between the procedural craters West then South to the polar region while passing more crater biomes. I couldn't do anything else in KSP for weeks, so much so that by the end of it I quit the game for month -, giving up on a promising Jool-5 challenge attempt. This time was hardly different. Though I landed in a 3-biomed region, navigating halfway through the continent to the other 3-biomed zone took hours and hours and then more hours: The most annoying part was having to stop after every downhill dash to repair the wheels: Wheels in KSP are broken. They hardly have any traction in normal operation because otherwise they would have too much forward friction to get any speed (which is paradoxical), they have good traction while turning because of the huge sideways friction value they use to simulate being wheels and not skis, and you can't control those XLR-2 past 13.2 m/s: you lose accelerating, braking and turning abilities suddenly. In a slope, it means you can control your rover's descent by keeping "back" pressed while zig-zagging (so you get some traction from the wheels while pressing "left" and "right") until you reach 13.2 m/s, and then it's just a ski ride. And the wheels break at 30 m/s. And there was the occasional slip-off: So, excessively long rides and annoying quirks of the Unity 4 wheel stuff. Otherwise, some of the most beautiful vistas and the richest science harvest to date in any of my KSP careers. Marcel still has to drive up the tallest mountain in decent range, for some yet-unplanned, future return mission.
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Meet Marcel. Or rather: M.A.R.C.E.L, as in Mobile Auto-Refueling Circumnavigating Eve Laboratory. Marcel was launched on a SSTO-duet of BIG rockets: Marcel drove to Eve this way, rolling all over the stars. Marcel tried to aerocapture naievely at Eve after transit: So Marcel paused and thought: "I cannot enter Eve's atmosphere above 4 km/s and survive, let alone keep my wheels. I have to brake first then pass into the top atmosphere to drop my apoapsis down." Then there was a dramatic pause for SCIENCE! And finally, came the landing:
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Lots of useful info here I've not seen mentions of the role of iron enrichment of food in dabetes/obesity trends though so I thought I'd add it. Actually, that hypothesis was tested and turned out wrong. Exercize is either not very effective, or not effective at all, depending on the stage of metabolic disorder in the patient. Exercize is still healthy for all kinds of other reasons though. The one thing that really does work with diabetes type 2 is dietary adaptation by eating a lot less carbohydrates or switching to carbohydrates that are resistant to human digestion. Yup, very important detail here. It seems that sustained glycolysis in slight hyperglycemic state with presence of certain (oxydized ?) fatty acids causes cumulative damage to the mitochondria and all kinds of enzymatic machinery around them, that might be the central cause of insulin resistance in muscles (then causing obesity, diabetes type 2, fatty liver, etc.) and onset of Alzheimer's disease in neurons.
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Ah, so that explains the weird behavior of my heavy Eve rover. Great traction when turning left or right, a fraction of that traction otherwise, no control nor braking past 13 m/s... And it does skid nicely down slopes, even with broken tires.
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Today I completed an impossible mission to expel a Class D asteroid from Kerbol: Meanwhile on Eve, Siema forgot to block the wheels with a wedge before reinflating the tires: (cue the Benny Hill theme)
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There might be somethign to Minmus orbit. One of my tankers shipping fuel between Minmus' surface and orbital depot got eaten once by unknown forces, and ripped in several parts, while it was transitting high in Kerbin orbit nearby. It must have happened while I was focused elsewhere, too, because discovered that only when I clicked it in the Tracking Station and noticed it had only 5 parts left.
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Jool Aerobrake - Bug or what?
Jesrad replied to cwalrus's topic in KSP1 Gameplay Questions and Tutorials
Jool has too much gravity, on an interplanetary transit you'll be hitting the atmosphere at speeds ranging 6-8 km/s, and any speed above ~4 km/s is unsurvivable in current KSP. The heating model used by KSP scales the heat to the cube of velocity, so your ship is getting hundreds, maybe thousands of times more heat than you're expecting. I tried aerobraking on Eve, and at 4.6 km/s from Kerbin transit I kept burning up as soon as my ship reached under 80 km altitude, until I resigned to brake with the engines first to bring my velocity down to 4 km/s and then did a long, boring series of 82 km altitude aerocapture passes that each brought it on the verge of overheating. Long story short: aerobraking days are pretty much gone except for Minmus/Mun return. As above, use gravity assists instead to turn a low-Pe hyperbolic trajectory into a high-Pe circularish orbit, or use your main engines to slow down. Just like Real Space Programs. -
How efficient is your Minmus mining operation? Share your pics
Jesrad replied to vej's topic in KSP1 Discussion
I had the same thing, my mobile base kept spinning backwards... until I noticed the trim was set two nothces down. Alt-X reset the trim, no more spin. -
I can transmit your questions to my dad (helicopter pilot with decades of flight practice).
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Here's one I used: And another by Riph: You have to mind the relative positions of aerodynamic center and mass center when tanks are full (ascent) and near-empty (descent). Those positions should be reversed between the two phases.
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"Duna, Ore Bust!" -- a KSP Graphic Novel (COMPLETE)
Jesrad replied to Mister Dilsby's topic in KSP1 Mission Reports
Most of the fireworks happen the night before, so you should be able to catch one.- 598 replies
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Not sure why you are all arguing about wind drag possibly toppling the MAV, IIRC the book explains that the problem of the dust storm is not so much the force of the wind, but rather the abrasion from the 400 mph dust.
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Oh, you're right ! I guess I can just burn straight ahead then.
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The tug is called Sisyphe, masses 17 tons, is latched onto the rock (christened "Boulder Dash") and no, it does not have infinite deltaV. The asteroid is 280 tons at 86% ore, giving the whole thing a total delaV in the vicinity of 22 km/s over an estimated 30 hours of continuous operation. I'm in the process of trying to tilt the trajectory closer to Kerbol then will use the mighty Oberth Effect to increase speed to 92 km/s, at which point I'll use the debug panel to mark the contract as completed. I'm unsure the 22km/s will be enough.
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The plants are loving it
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Yup, impossible. Kerbol's SOI has infinite range. I accepted it nonetheless