42

Turnover point doesn't need a period of zero-g or any kind of noticeable effect on the passengers. Simply don't stop thrusting. That is, when you get to the halfway point of the trajectory you start slowly turning the ship around while keeping your thrust at normal level. If you do your turn slowly enough, your passengers won't notice a thing, say over a ...


36

Velcro Velcro is easy to use insofar as you an put the 'fluffy' side of the velcro on almost any surface, and then just adhere the 'hook' side of the velcro to the underside of your shoes. Let's say you're on a ladder. Your hands can still grip the rungs covered in the fluffy part, but your shoes adhere to it, making purchase easier. Ideally, you'd also ...


25

Add railing If you really wanted to go out for a walk on your low gravity rock, and often, then your colony might want to invest in setting down some railing. Possibly everywhere. When you go outside you have a cord attached to you, and the other end you attach to the rail. You can use a simple clip. When you walk the clip slides and slides along with you. ...


20

Your martial artists will need 3 things; speed, flexibility and upper body strength. The real issue with fighting in zero G is purchase. When Chuck Norris stands his ground against an attacker, he does exactly that; The purchase he gets from his legs on the ground means that when he strikes, the momentum he's building with his fist, foot, shoulder etc. is ...


14

You don't actually need any footwear to move in micro gravity. Hands are the perfect tools to grab onto ladder rungs and with a little training, our toes can hold onto them fine enough. In micro gravity humans don't have to walk upright, they can pull themselves along handholds and ladders in all directions. The ISS is a fine example of how a single hand ...


14

They should be fine. Slowing down in a train is more uncomfortable than speeding up because the acceleration is directed outward through your chest and face, pushing them ahead of you, rather than pushing you back into your seat, which people can generally tolerate a little better. If your seats rotated around 180 degrees before the train slowed down, though,...


12

Cross country ski. http://runawayjuno.com/runaway-tales/sand-skiing-namibia-desert/ The vector forces entailed in cross country skiing are well suited for a low gravity environment. Rather than pushing downwards as with walking or running, one moves by shifting the weight and pushing off forward against the back ski. This was developed for snow but works ...


12

A good BBQ has a few key attributes (aside from starting with quality raw meat, which has already been arranged): High and/or long-lasting heating. High heat for searing steaks and for cooking up burgers. Lower but longer-lasting heat for roasting a whole chicken, ribs and other large (especially thicker) items. Smoke. Bad for you, but adds flavor. This can ...


10

From Wikipedia The cracking mechanism and the resulting sound is caused by carbon dioxide cavitation bubbles suddenly partially collapsing inside the joints. The collapsing of the bubbles is due to pressure differential between the inside and the outside of the bubble. When we consider the pressure in a liquid, we can distinguish two components: ...


9

This question is ultimately about terminal velocity. The equation to compute this is... $$\sqrt{\frac{2mg}{ρAC_d}}$$ where m is the mass, g is acceleration due to gravity, ρ is the density of the fluid through which the object is falling, A is the projected area of the falling object, and $C_d$ is Drag Coefficient. Given your Assumptions The size of ...


8

Centrifuge looks like an answer, and actually was used in few books I've read. Fluid builds up due to lack of force pulling it down, right? It does not mind if that force is not strictly gravity. First solution is to build ring-shaped living area. Even for relatively small craft, I'd say at least 10m diameter, centrifuge could simulate gravity well enough ...


8

Nice question! First of all, if you want to do martial arts in space, then the entire basis of martial arts would have to change. Instead of focusing on using gravity against the opponent, you would have to use momentum and power sources to power your punches. This would mean extensive training. First, I'm assuming there is a floor. Meaning, you're not ...


8

You have multiple options, you'll be pleased to know. Use a train The artificial gravity is a feature of your angular velocity as the station rotates. If you move in the direction of rotation, your angular velocity increases and you'll feel heavier. Move in the opposite direction and you'll feel lighter. If you put your training facility in a big train ...


8

It should be noted that (unlike a train) a ship can reverse the direction of thrust relative to its destination, without significantly changing the direction or amount of relative thrust (/acceleration/gravity) experienced by it's occupants. The ship merely needs to slowly swing it's tail around while continuing to thrust at 1G. This is slighty less ...


7

Well, if you are floating into space you know that your body will be showered by a lot of photons with all energy flavors.. from radiowave to gamma ray... why not thriving on them, especially the most energetic ones (UV, X-ray, gamma ray)? You just need some molecules which can absorb the above said radiation, turn into an excited state and then relax back ...


7

Vacuum deposition This is ideal for space. Micro-gravity will ensure an even deposition and space is already a vacuum! You would use a carefully crafted spherical mould of light but rigid materials (it doesn't have to stand up to gravity and you could even use an actual inflated balloon as the mould). Use the process from the inside of the mould. The slow ...


6

If your gravity is low, you need to be cold I think this is the 25th time this graphic has been posted to Worldbuilding. As you can see, the ability of a planet to hold an atmosphere depends on both the escape velocity and temperature. Lighter gasses (hydrogen and helium) required lower temperatures to escape, heavier gasses (like krypton, sulfur dioxide, ...


6

As You correctly guessed the "orbit plane" is actually a surface (no thickness), so the individual atoms of the space station would, if separate, be on different orbits and drift away over (short) time; of course they are kept together by direct interaction so structural strength of your space station won't have any problem in keeping it together. This ...


6

I can think of 3 areas for improvement. 1) As has been already mentioned, the control of muscle mass needs to be addressed, so that in a microgravity environment you get muscle rather than fat. Some sort of control of bone density is probably a good idea, too. Presumably the first generation of flight animals has to be raised in a non-zero-gravity ...


6

Animals in zero G experience the same problems humans do in that environment: loss of muscle mass and decrease of bone density. Astronauts run bungee-corded on a special treadmill to minimize these effects. I think it's highly unlikely you're going to get bessie on that treadmill... Honestly, if you're capable of genetic engineering a macro-organism like ...


6

Many comets have naturally-occurring deposits or constituents which are quite complex organic chemistry see here so perhaps you are a comet capturer and devourer. This could involve an externaslised machination and initial dissolution apparatus (think like an arthropod here) or could involve a complex mouth which is in effect like an in-body airlock. Obvious,...


6

We have already seen what happens in a similar situation--in lunar gravity we find it very natural to do a hopping motion like we saw the astronauts do--that wasn't trained, that's just what they did. The Mythbusters reproduced this--in a lunar-simulating airplane they found the astronaut's hopping felt natural and was easier than walking. I do not think ...


6

You don't shut down for the flip and you don't adjust the orbit other than in a tiny amount around the time of flip. I first read about this in Heinlein as a torchship skew turn. Basically, think of it as an exercise in symmetry - within a short segment of the trajectory, you have to over-rotate after turning, enough to compensate for the pertubation of ...


5

Maybe you'll have durable sheets that can be washed and reused, rather than disposable. That would be handy for printers too, which can erase the fed sheets as well as print. Note this idea of plastic sheets is used in Marvin Minsky's novel The Turing Option. You might also combine e-ink sheets with traditional marking, or virtualize the marking like on ...


5

You might try eating earthworms: They are usefull for agriculture. They have proteins. They can be processed into burgers and nuggets. They wont suffer much from lack of gravity. Properly prepared eathworms...


5

Use ropes and cables. Attach your suit to them so you don't die. They are cheap, easy to install and remove (that far into the future, I'm sure a robot can do that for you before your trip) and easy to store. And if you don't have time and need to go someplace quickly, you can just attach them to your suit and your station . Your suit already comes equipped ...


5

Set up walking paths equipped with rails. It could look something like a walker, possibly with straps to hold you down, and tied into a rail system. Each time you take a step the walker and straps will keep you from bouncing away, and instead that energy will be used to push the walker forward. The walkers wheels would work something like the ones on a ...


5

If you are just worried about ionizing radiation then there may be biological solutions ... 1) Build a radiation-proof skin/shell. Possibly impractical, as radiation in space can be fairly penetrating - even a few mm of aluminium won't keep it all out. But you could develop a species with a very thick skin (inter-locking plates to maintain flexibility like ...


5

@Tim B II above raises very good point about lack of support from legs. Moreover, wrestling might be more viable than striking arts even here on earth. But it is not nearly as spectacular. So here are a few ideas (I do assume you are fighting inside a ship or station): Leaping of the walls will be limited to moving into/out of the fight, and ambushing ...


5

I am not sure that holding the feet somewhere would be of any help for moving in microgravity. Our body is used to either walk or swim. Walking for a biped is basically a continue series of controlled falls: the body leans forward, using gravity and feet traction to move and then the other foot to start te cycle again. Taking out gravity from this process ...


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