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I'm writing a safety case for pressure testing equipment using gaseous nitrogen (hydraulic pressure testing in this case is impractical) and I am trying to estimate the energy transferred to a projectile in the case of something bursting so I can sensibley mitigate against this eventuality.

I tried to estimate this by calculating the velocity acheived by the pressure acting on a projectile of given area and mass as it rides the expanding pressure wave and is accelerated by it. The figure I came up with seemed rather low in doing this.

Should I just assume that any projectile will travel at the speed of the burst/explosion (which I guess will be the speed of sound)? Or is there a more sensible way of working this out?

Many thanks.

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# Calculating the energy in projectiles from burst pressure vessels

**Physics Forums | Science Articles, Homework Help, Discussion**