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Originally Posted by redpoint5
I don't see the engine redundancy in that design, and in a fixed pitch fan, you've got to have redundancy. At least in a helicopter, you can autorotate if the engine goes out.
I also don't see why these aircraft are dependent on batteries getting better. We've already got jetfuel, so why not make these with conventional jet engines?
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THe current stat-of-the-art (Rolls Royce and Aston Martin) is an hybrid octocopter. Elon Musk is commited to pure electric, and like Fuller he's ahead of the curve. Just not as far.
At
https://youtu.be/dnxKo18lETk?t=2101 the illustration shows the rear disk tilted but calls it out as
a gyroscopic stabilizer. So possibly all three are gimballed. The illustration is no doubt speculative any way.