| 11. | This variability maintains a comparable exhaust velocity and back pressure throughout the engine s rev range.
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| 12. | Chemical rockets operate as heat engines, and Carnot's theorem limits the exhaust velocity.
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| 13. | The effective exhaust velocity in units of m / s is also in reasonably common usage.
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| 14. | With higher fusions gains comes higher exhaust velocity, higher specific impulse and lower electrical power requirements.
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| 15. | In general, the exhaust velocity should be close to the ship velocity for optimum energy efficiency.
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| 16. | These engines, with their lower exhaust velocities, produce less jet noise and use less fuel.
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| 17. | He also advocated the use of liquid hydrogen and oxygen for propellant, calculating their maximum exhaust velocity.
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| 18. | PPTs have much higher exhaust velocities than chemical propulsion engines, but have a much smaller fuel flow rate.
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| 19. | For low exhaust velocity with respect to the mission delta-v, enormous amounts of reaction mass is needed.
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| 20. | The sound intensity from the shock waves generated depends on the size of the rocket and on the exhaust velocity.
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