Jonas Taelman

It's known that all objects with a certain amount of mass generate gravity. This is because of Einstein's relitivity theory. Look at it like this: Get at towel or a blanket and stretch it on all four sides. Now put a poolball on the blanket. What you see is that the blanket is bent. If you put a smaller ball on the blanket you will see that the smaller ball will roll over to the heavier poolball because the blanket is more bent at the poolball's side. The same thing happens in space. All objects, with mass, bend space (and time). So the more mass the object has, the more gravity it will have. On earth we consider to have 1G, if the earth had 2x the mass it has now it would be 2G of gravity. When two bodies attract eachother, think about the blanket. Space is bent around both bodies and they just "roll" inside eachother's bent area.

You still need to take the Coriolis effect into account.

Resistance of copper is about 0.0175 Ohm's at 15°C. Ofcourse depending on the width and lenght the bigger the size the bigger the armature reaction so you can't forget to compensate that by also adding compensation conductors where the current flows in the opposite direction and poles on the side which push the pole axis and zero axis back in it's place. This will be one expesive generator/motor.

people forget that gravity is essential during trips at this extent. The journey from Earth to Mars for Curiosity took 6 years, and that's only for an unmanned ship. For a manned ship it would take much longer so let's say there's even a minimum of 6 years. To live without any gravity for six whole years will take it's toll on not only your health, but also your complete anatomy. And about the Coriolis Force. Why not make the scale bigger? Send it into orbit in parts. The bigger the scale the smaller the effects, no? I also think in times of emergency that the Coriolis effect will be the least of our worries.

Artificial gravity isn't that hard to achieve. The only thing necessary for this gravity is a round, cilinder-form shape of the spacecraft. The gravity can be made by spinning the spacecraft in a consistant speed in lenght around it's own axis. All inside loose objects will clamp to the inside wall due to the artificial atmosphere that is created inside the spacecraft for breathing and, well, living. The same thing happens when you spin a bucket of water at the same speed around. Momentum and Newton's 1st law makes sure that the water stays in the bucket. The travelcourse, on the other hand, is a little bit more complicated. First this spaceship needs to create an orbit around the Earth before setting up course to Mars. For artificial gravity to be created we need quite a long ship. This is a complication since the longer or bigger the ship is the heavier it will be and the more fuel you will need. When we do make it to a full and succesfull orbit, chances are high that we don't have any fuel left. This, ofcourse, can be easely solved be sending more fuel op there (but is really expensive). If we do have the ability to refuel, we need to make a calculated burn to enlargen our orbit shape into a very long oval shape that intersects Mars' gravity field. This burn will use a lot of fuel. When we get in that gravity field we need te make another burn to get into orbit aroud Mars, again, this uses fuel. When in orbit we still need to make a soft, succesfull landing. By turning the spaceship retrograde (oppesite side of course direction), burning, make the orbit smaller and get closer to Mars until we enter the atmosphere. More fuel is used. At a speed of about Mach 2 or Mach 3 even (1 mach = speed of sound = approx. 1320 km/h) we can't say we can make a soft landing. By again burning retrograde we slow down by a big amount and are able to land softly while using landingstruts and parachutes. This journey would take about 10 - 15 years, billions of dollars, billions of gallons of fuel, and a lot of smart and patient people.