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> while this can only be useful where you still have atmosphere and oxygen The planned SABRE engine can act as a rocket as well closing the intake and using st
by tompko 14y ago
> while this can only be useful where you still have atmosphere and oxygen
The planned SABRE engine can act as a rocket as well closing the intake and using stored liquid oxygen so it would be capable of operating without an atmosphere and oxygen and landing on Mars.
- stephengillie 14y agoCan it take off from Mars? In another HN thread a month ago, we discussed how Mars' atmosphere is so thin that a Cessna would need 747 wings and near Mach 1 velocity to take off.
- ricardobeat 14y agoRockets are propelled by their own exhaust.
- wololo 14y agofyi: https://news.ycombinator.com/item?id=4261806 https://news.ycombinator.com/item?id=4261806, https://news.ycombinator.com/item?id=4608595 https://news.ycombinator.com/item?id=4608595