So Musk's shiny rocket test flight ended with an explosion, and his explanation was, "Fuel header tank pressure was low during landing burn, causing touchdown velocity to be high & RUD". RUD apparently stands for rapid unscheduled disassembly.

Which is the most wanky way to describe a crash I've ever heard.

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@InvaderXan Space is full of acronyms like RUD, that's not unique to SpaceX, it's just that kind of engineer being a particular kind of nerd =P

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@witchfynder_finder @InvaderXan yeah I've definitely heard such terms from Actual Rocket Scientists. "The Up-Goer 5" and "you will not go to space today" are also classics. xkcd.com/1133/

@witchfynder_finder @InvaderXan aviation (without the space) has many as well. CFIT for example is a particularly tragic type of crash where the pilots think everything is fine until impact. It expands to "controlled flight into terrain" and it usually happens at night in the mountains, but can also happen on flat land.

@varve @witchfynder_finder @InvaderXan then there is also the term "lithobraking", which describes reducing the speed of an spacecraft by using the surface of a planet.

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