| 11. | Normal shock waves can occur in two reference frames : the standing normal shock and the moving shock.
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| 12. | A detached normal shock wave forms just ahead of the intake lip and'shocks'the flow down to a subsonic velocity.
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| 13. | The flow before a normal shock wave must be supersonic, and the flow after a normal shock must be subsonic.
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| 14. | The flow before a normal shock wave must be supersonic, and the flow after a normal shock must be subsonic.
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| 15. | A detached, strong normal shock appears directly in front of the inlet at supersonic flight speeds, which leads to poor pressure recovery.
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| 16. | For supersonic flow, however, pitot pressure is the stagnation pressure of the flow behind the normal shock ahead of the pitot tube.
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| 17. | When the compressed flow becomes parallel to the center line, a shock wave perpendicular to the flow forms, called a normal shock wave.
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| 18. | Next, the equation below shows the relationship between the post normal shock temperature, T _ 2, and the upstream ambient temperature, T _ 1.
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| 19. | This deceleration, which is produced by a normal shock, creates a total pressure loss which limits the upper operating point of a ramjet engine.
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| 20. | Supersonic flow can decelerate back to subsonic only in a normal shock; this typically happens before the trailing edge . ( Fig . 1a)
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