| 11. | He formulated methodology for life extension of propulsion systems of advanced missiles.
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| 12. | The propulsion system consisted of Parsons turbines providing to two propeller shafts.
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| 13. | However the adoption of a similar propulsion system was abandoned early on.
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| 14. | Her propulsion system was rated to provide for a top speed of.
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| 15. | Its propulsion system included an orbit circularization and 10 years of operation.
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| 16. | In some instances the hull structure and propulsion systems can become damaged.
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| 17. | There were no propulsion systems on " Luna 2 " itself.
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| 18. | A new propulsion system was also installed, which significantly improved performance.
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| 19. | NASA spends only a few million dollars a year exploring advanced propulsion systems.
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| 20. | Her propulsion system was rated at for a top speed of.
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