3 ms·
Its only usable outside of any serious gravity wells, e.g. for interplanetary and possibly intersolar travel. They would replace uses currently postulated for s
by phs318u 10y ago
Its only usable outside of any serious gravity wells, e.g. for interplanetary and possibly intersolar travel. They would replace uses currently postulated for solar sails. Not sure, but it may also be suitable for use-cases currently postulated by small ion-thrusters as well (especially where weight is critical).
- mikeash 10y agoIt would be useful once you're in orbit, even deep in gravity wells, if you're patient. For example, a geosynchronous satellite with a drive like this could be launched on a rocket just big enough to get it to low-Earth orbit, and then it could gradually take itself the rest of the way. But it won't be replacing traditional rockets for that initial launch unless it's possible to increase its thrust by many orders of magnitude, and that initial launch is really the hardest part of doing space.