Is the remaining mass of the rocket overwhelmingly aluminum so that you can design rockets that will float in salt water? Could the second stage also be made recoverable this way?
Is the remaining mass of the rocket overwhelmingly aluminum so that you can design rockets that will float in salt water?
Now that they have created aluminum that is 1/4 as dense and actually only 60% of the density of water, will it be possible to create main and other rocket stages that will float in seawater and that then can be reused to bring the costs of rockets down?I'm not making this uphttps://phys.org/news/2017-09-ultra-light-aluminum-chemists-breakthrough-material.html