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Problem 4.84 - Problem 4.84[Difficulty 2 CS Ve y x Rx Given...

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Problem 4.84 [Difficulty: 2] R x y x CS V e Given: Data on rocket motor Find: Thrust produced Solution: Basic equation: Momentum flux in x direction for the elbow Assumptions: 1) Steady flow 2) Neglect change of momentum within CV 3) Uniform flow Hence R x p eg A e V e ρ e V e A e ( ) = m e V e = R x p eg A e m e V e + = where p eg is the exit pressure (gage), m e is the mass flow rate at the exit (software cannot render dot over m!) and V
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