| 11. | These same engines served as the last stage s vernier thrusters.
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| 12. | Two sets of thrusters comprise the observatory's propulsion system.
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| 13. | These thrusters were originally designed for the Mars Surveyor 2001 Lander.
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| 14. | The reaction and control system is based on cold gas thrusters.
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| 15. | Thrusters, like main propellers, are reversible by hydraulic operation.
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| 16. | These are executed as thruster burns orthogonal to the orbital plane.
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| 17. | This is augmented by a direct jet thruster and vertical stabilisers.
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| 18. | The lander has a single thruster pointing directly downwards beneath it.
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| 19. | This technique uses the thrusters and the speed of a fighterclass.
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| 20. | For maneuvering at ports the ship has two Brunvoll bow thrusters.
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