An interesting question. Some while ago I queried why the craters on the Moon all appear circular. The resulting conversation concluded that it involves the same thing you have introduced. The momentum of the missile or the incident meteorite is so much less than momentum changes due to energy released by the explosion that the resulting 'disturbances' will always be symmetrical about the point of impact.itssilva said:
The problem that PF has with 'SciFi' based discussions is that the authors tend to move the goal posts in order to fit the facts to their stories. So the threads easily depart from the Physics that PF is all about. You will get no joy from complaining because PF's purpose is not to polish up SciFi scenarios to make them slightly more technically acceptable. SciFi questions should be on the SciFi forum so that people like me don't have to deal with them. SciFi is fun but even Arthur C Clarke needed to bend the rules for the purpose of the plot. And he was a pretty well informed kind of guy.itssilva said:
An absolute lower limit of pressure on the trajectory is vacuum. Try to compare that to the pressure of the blast and give us your estimate about the percentage...itssilva said:
This discussion is not 'SciFi" based, the sci-fi aspect was only circumstantial motivation; if I ask a scientific question about the Periodic Table and mention in passing "oh, maybe I'll write a song about it", does it get bumped into the Folk Ballads subsection too?
I'm not asking you people to do any kind of work for me, like setting up a computer simulation yourselves - I'm ignorant about the state-of-art of fallout hydrodynamics, so I posted a question here because maybe this is common knowledge to some expert, who can answer it in two lines, simulation or not; but if you don't know, then I guess we're in the same boat.
Unfortunately, I'm too ignorant of hydrodynamics and nuclear physics to even get started
; but anyway, I'm more interested in the qualitative behavior, so there's thatPlease give up about writing any hard sci-fi.itssilva said:
Did you read my previous post? I just would like to make some drawings! But also, your comment is rather misguided: yeah, I suppose every hard sci-fi writer ever made extensive calculations regarding rocket engineering before their pens ever touched the manuscript; that certainly makes for an interesting read.Rive said:
Yes. And later on, when they caught on some mistakes, they are expected to reflect on it. That's what the 'hard' part is about.itssilva said:
Not usually. Usually we are extremely helpful, and try to help newbies learn and grow.itssilva said:
Non-mushroom-cloud hydrodynamics refers to the study of fluid flow and dynamics without the formation of a mushroom-shaped cloud. It focuses on the behavior and interactions of fluids, such as liquids and gases, in different environments and conditions.
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The main difference between non-mushroom-cloud hydrodynamics and traditional hydrodynamics is the focus on the behavior of fluids without the formation of a mushroom-shaped cloud. Traditional hydrodynamics also includes the study of shock waves, explosions, and other phenomena that are not typically seen in non-mushroom-cloud hydrodynamics.
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