kerbiloid

Calling 911 because it's your door code.

This letter mess is cheating.

Rocket PBAN.

Invented by insectoid aliens to infiltrate and occupy the Earth.

Instead of trying to decipher the alien encoded TV channel transmission, they should start retranslating this signal omnidirectionally with SETI antennas. Then the signal provider will send here a servicing brigade to have a look, what jerk is doing that. So, we'll be able meet and greet them.

All this wooden junk doesn't matter. Only the data record in 1S (accountant software) decides, what is ship, and what is not. Btw, what was Theseus shipping?

https://hpmor.com/chapter/108 Oops, it was Pioneer. But you never know about those warlocks. Better keep your eyes on Voyagers, too.

(multipost)

The V-2 and R-7 turbopumps are rotated by H2O2 decomposition products. MHD can work on any fuel. A turbine needs just any expanding gas. The reason why the C-Stoff was abandoned is that post-WWII countries live on a planet with oxygen atmosphere and rich with natural oil. The Mars isn't. http://www.airpowerworld.info/aircraft-engine-manufacturers/walter-hwk-109-509.htm https://en.wikipedia.org/wiki/Walter_HWK_109-509 Its ISP is low, about 180 s, (17 300 N / 8 kg/s / 9.81 m/s2) It's not a fuel of choice when you have alternatives. But poor conditions sometimes need poor solutions. 0 .. 2° C (water and hydrazine freeze). But it's easier to keep a hangar +4°C warm than cryotanks -200°C cold. Also maybe it's wise not to keep it mixed (to store the hydrazine hydrate apart), so methanol can stay liquid even outdoors most part of the year.

Yes. That's why I suggest to save it, and use as less hydrazine as possible, mixing it with methanol. The storable alternative is hydrocarbon fuel, a pseudo-kerosene, synthesized from methane, which is produced from CO2 and H2O. But I would expect much greater mass of required equipment (actually, a whole oil plant), while N2 mining needs just gas separation plant and patience. As they anyway need ammonia for any serious chemistry or farming, the NH3 production looks much more viable that hydrocarbons one. As a bonus: by producing NH3, they make available local production of explosives for serious geology, and dense, storable fuel for the space ships to send them back to the Earth. Yes. But the volcanoes are also 500 km wide, so you also need several weeks to travel by wheels, spending supplies and with risk of damage. And before having the roads built, you will probably be needing to hop there and back again, above the rocky wastelands. 0.001 atm on top of the hill, and 0.01 atm at the foot. It's > 30 km at the Earth. Even the last year UFO airships don't fly so high. P.S. Also, they need heavy equipment, like drills. Usually powered from diesel or petrol motor. So, at the field camp they need either portable reactor, or a huge field of solar panels, and anyway several kilometer long cables. Or a chemical engine. Say, using same C-Stoff + T-Stoff to power a turbine or an MHD generator right at the drill. I mean, at the research camp, of course. The industrial mine can use the reactor. A sun-powered rover brings barrels from the field camp warehouse to the drill, and they pour the fuel into the drill tank for the high-power drilling motor.

The shuttle lifts up, unloads, returns back. It doesn't stay fueled for long time. So, it can use cryogenic propellant. The hopper may return in a day, or may stay for a month, or for a year. Or you may need to bring some propellant and refuel an empty hopper to return it back. You don't want a cryogenic equipment for that, mostly buckets. So, storable components are required for the hopper. C-Stoff and T-Stoff can be stored in barrels for years. You can make a fuel depot of them for operations far from the base. While the cryogenic liquids can be stored only for several weeks, without the active cooling. You have a lot of H2O ice around, so you can produce H2O2. It's good as a monopropellant fuel, as chemical agent, as hypergolic oxidizer, and hair bleacher. By electrolyzing H2O, you get a lot of H2, and O2. By electrolyzing CO2 (or by partially reducing it into C), you can produce CO. CO and H2 produce CH3OH methanol. Atmospheric N2 and electrolytic H2 produce NH3 ammonia. They anyway need it for all kinds of chemistry and farming, and as the cheapest possible coolant for cryo tech. NH3 and H2O2 (for example, as usually they use another way) will produce N2H4 hydrazine. Both methanol and hydrazine are water solutions, so the hydrazine exists as hydrazine hydrate, and there is free water already mixed in. So, you produce the methanol and hydrazine hydrate and store them in barrels, mostly for your chemical and fertilizer production. When you need rocket fuel, you take as much as you need, and mix them into C-Stoff. Also you take H2O2 and call it T-Stoff. Then you add some alcali and permanganite ingredients (say, Z-Stoff for the T-Stoff) from flasks (you need not very much, so they are either imported from the Earth, or produced from the Martian ground). Interesting, can the perchlorates be used instead, to ignite the H2O2, as the Martian ground is rich of them. And thus you get a cistern of C-Stoff fuel, and a cistern of T-Stoff oxidizer,both hypergolic and storable. You can either pump them into the hopper tanks, or carry them to the field camp, to fuel the hopper later, in situ. As you are producing a lot of ammonia as product, and liquid oxygen as by-product, you can use them as dense cryogenic propellant for the shuttles to orbit. They can survive a week or two in orbit, and the shuttle doesn't stay docked longer. It brings your Martian products to the orbital base and returns back. Also, you can use this propellant (C & T Stoffs) as fuel for various on-ground field equipment. Also you can use pure T-Stoff itself, but it's weaker.

You caught the saw. It was... unwise, Jeb saw it.

U clicked it, clickn't u?

1. They should keep keeping the contact at least to know, how large is the physical bubble of the Solar System reality, and if the probe will bounce off the wall, stick in it, or disappear and immediately reappear from the opposite direction, approaching to the Earth. 2. The longer it flies - the more chances that the aliens will intercept it and use for invasion. So, the RTG should be replaced with reactor to explode in the end. 3. The Harry Potter fanfic by Yudkowski says, that one of these probes (idk, which one) is carrying another Voldemort's horcrux, so it's wise to keep keeping eye on it.

The Martian volcanoes have very high walls, so probably suborbital hoppers on cheap local storable propellant, produced from air (CO2 and N2) and ice (H2O), like C-Stoff und T-Stoff. Dust-protected. Any of them will be covered by dust very quickly. So, maybe some planet-long reticular catwalks, to let the dust drop down through. Upd. Liquid ammonia (from N2 and H2O) and liquid oxygen for the orbit-surface shuttles. With same T-Stoff for RCS.

Able to crawl, helping with remaining blades. A crawlicopter.

The first click in this month! Finally...

Marvel Ban. Only DCBan can oppose it.

You can hear the singing: "... Alum dare, dolere, id Hephaestus, id ire!..." from ConBan The BanBanian.

Floor 4550: Sean Bean.

They should try the next idea: the intercontinental orbital rotavator.

Granted. Its other parts are oblique, too. Though, it's no motor onboard. I wish to know, are they completing or disassembling that building far behind the trees, in front of formerly my school. (They are doing this not the first year, and sometimes this is looking different.)

Floor 4546: You can see 3 mi Island from here.

The gnomes midgets dwarves of Moria invite you all to BarazinbaN.