According to specs it'll reach 1600 m/s on atmospheric oxygen. So, afterwards, it needs another 8000 m/s Δv on rocket engines to reach LEO. Skylon is a neat t

According to specs it'll reach 1600 m/s on atmospheric oxygen. So, afterwards, it needs another 8000 m/s Δv on rocket engines to reach LEO. Skylon is a neat trick, but it's not magical.