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Re:The Tyranny of the Rocket Equation (2012) by neolefty on Friday June 29, 2018 @08:45PM (#17428892)
revive the idea of the air-augmented rocket

Does Skylon fit the bill?

https://en.wikipedia.org/wiki/Skylon_(spacecraft)

It pushes the limits of materials and design. But I think a reusable 2-stage rocket—as boring as it sounds—will end up working better in the near term. It can be done with safe margins.

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