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SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025 (interestingengineering.com)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 1 year ago* (last edited 1 year ago)

Skylon is a totally different kind of engine, though. It's has a turbojet with active cooling at the inlet, basically. The SR-72 uses a scramjet at high speeds.

It sounds like the enabling tech was 3D printing, based on the Wikipedia article. There must be a really intricate system of tiny channels within it.

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