3 ms·

You're talking about minimizing jerk: https://en.wikipedia.org/wiki/Jerk_(physics) https://en.wikipedia.org/wiki/Jerk_(physics) To my knowledge, there is no r

• loeg 8y ago
  Is https://en.wikipedia.org/wiki/Max_Q https://en.wikipedia.org/wiki/Max_Q relevant?
• sandworm101 8y ago
  >> To my knowledge, there is no reason to minimize jerk for machinery. Maybe not for a blob of homogeneous metal parts, but with complex structures that jerk can multiply into bad things. As the nose hits air (the sudden high G-load) a shockwave moves down the vehicle at the speed of sound (sound through metal, not air). Shockwaves can do funny things in complex structures. Imagine that this thing had a solid rocket motor for circulization. As the shockwave moving down the metal walls at one speed, slower through the fuel, the fuel might crack in ways that are not-good for a rocket. Fluid-filled things like pipes can also be subject to water hammer-like effects when g-loading changes abruptly as opposed to a gradual onset. The fluid gets moving quickly as the pipe stretches at one end, then must stop abruptly as the pipe hits its limit.
• owenversteeg 8y ago
  That's actually a very interesting question. Are there electronics or machinery affected by jerk? How would that work?
  • AlanSE 8y ago
    Another comment mentioned "hammer-like effects"... I can see it. Mentally, I picture a half-filed milk jug being pushed around the counter. Smooth acceleration changes cause the water level to safely assume the new steady-state, but high jerk values can cause the container to collide with the water hard. If you have hardened electronics, hopefully none of the components are loose.