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Recent content by frag68

  1. frag68

    Propane pressure?

    Actually, I'm using propane as a projectile propellant. But regardless, the ignition chamber volume is constant. I appreciate your replies. I'm not certain of the first methodology you described mbeychok. It seems like this should be a fairly straight forward calculation. For some reason I...
  2. frag68

    Propane pressure?

    I'm trying to calculate the pressure of a propane/air mixture after ignition, given a fixed volume. To be honest, I don't know where to start. I looked at using the constant volume leg of the Otto cycle as a reference, but I don't know the final temperature of the system. Assumptions would be...

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