Recent content by Julian Erickson

  1. Julian Erickson

    I Rocket-Jet Hybrid, Rocket + Ramjet

    Good point. I added a link in the original post: http://www.pulse-jets.com/phpbb3/viewtopic.php?t=931
  2. Julian Erickson

    I Rocket-Jet Hybrid, Rocket + Ramjet

    I read that a thrust augmentor can significantly increase the efficiency of a jet engine (http://www.pulse-jets.com/phpbb3/viewtopic.php?t=931). Now from my understanding, the thrust agumentor is sort of like a ramjet. Only, in this case, the cold air is being sucked in along with the hot air...
  3. Julian Erickson

    Translational + Angular Acceleration of Free Body (not fixed)

    I'll take your advice and solve "simple" problem analytically on my own. At least I have have a better understanding on the rules of conservation now. I'll have to practice applying them. Thank you.
  4. Julian Erickson

    Translational + Angular Acceleration of Free Body (not fixed)

    This really cleared things up for me. I never thought to see the angular momentum that way. Here is my current standing: Mechanical energy is collectively conserved. I can make equation number one that includes linear and rotational energy. Am I wrong on this as well? Can linear and rotation...
  5. Julian Erickson

    Translational + Angular Acceleration of Free Body (not fixed)

    Conservation of kinetic energy makes sense to me. But I don't understand how the conservation of linear momentum is true. And I do not understand how the conservation of angular momentum is true. In Case B of the ball-brick problem, some linear momentum is lost. Some angular momentum is gained...
  6. Julian Erickson

    Translational + Angular Acceleration of Free Body (not fixed)

    Thank you for the wonderful replies. I have a better handle on the problem now. My simulation will be split into fixed time intervals. For each interval, an object may have a force vector applied to the normal of one of its faces. That force vector is an impulse when the time interval is taken...
  7. Julian Erickson

    Translational + Angular Acceleration of Free Body (not fixed)

    Thank you for pointing that out. For now, let's say it is an impulse or high force for a short interval. If the force is closer to the center of the brick, the brick will move more but rotate less. If the force is far from the center of mass, the brick will rotate a lot and not move much...
  8. Julian Erickson

    Translational + Angular Acceleration of Free Body (not fixed)

    Imagine a long brick in outer space. You apply a force tangential to the center of mass. The brick accelerates in a transitional and angular fashion. There are no constraints or fixed axis. How would I calculate the translational and angular acceleration? I would like to run some simulations...
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