| 41. | That would leave 115 kilograms for propulsion systems, scientific instruments, electronics and communications equipment.
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| 42. | A good deal of the mass, 30, 600 pounds, belongs to the propulsion system.
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| 43. | Their propulsion systems consisted of steam turbines of various types.
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| 44. | NASA's current challenge, O'Keefe said, is figuring out a propulsion system for distant missions.
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| 45. | The shuttle's own propulsion system took over the aiming task.
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| 46. | The majority of vehicles had their marine propulsion systems removed.
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| 47. | Their propulsion system consisted of a pair of horizontal funnels.
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| 48. | Her propulsion system consisted of two vertical triple expansion engines.
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| 49. | Pratt & AMP; Whitney's F135 propulsion system is expected to enter production in 2007.
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| 50. | Most steam propulsion systems use a boiler to produce steam.
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