4 ms·
A radius of 224 meters is 1 g acceleration at 2 revolutions per minute. It is directly proportional, so half the acceleration is half the radius. 0.5g or less m
by exDM69 11y ago
A radius of 224 meters is 1 g acceleration at 2 revolutions per minute. It is directly proportional, so half the acceleration is half the radius. 0.5g or less might be good enough.
Now this is a pretty huge space craft, but compare that with the ISS which is already 108 meters wide by 73 meters long. It's a huge undertaking but in the realm of possible. Of course, there's still the issue with mass and thrust required to propel a huge craft to an interplanetary trajectory.
The question is whether artificial gravity is a requirement for interplanetary human expeditions.
- iwwr 11y agoThat assumes the ship's radius is a limiting factor. It isn't if you spin the ship against a counterweight with a tether (the spent third stage which is going with you on the same trajectory more or less).
- imglorp 11y agoYes, especially if you keep half your fuel/water/supplies in that tethered section. Consume at differing rates to shift CG where you want it.
- iwwr 11y agoWell, there's no "consume" in terms of matter, stuff isn't thrown overboard. Besides, the food and water (or what they become) is still valuable radiation shielding.
- imglorp 11y agoWell, I think the whole point of fuel is you want to throw it overboard :-) ... at high velocity and on fire.
- iwwr 11y agoThe tethering happens after the upper lift stage is exhausted. It's then spun from a tether for the duration of the trip, then disconnected before the deceleration burn to orbit Mars. There's no mass exchange while the tether is connected.
- deleted 11y ago[deleted]
- kansface 11y agoThe craft doesn't need to be that big. For instance, you could have two smallish rooms on long arms connected by a tube - some assembly required.