| 11. | The solid rocket propulsion unit was developed by CITEFA.
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| 12. | Vehicles can then climb the tether and reach orbit without the use of rocket propulsion.
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| 13. | Robert L . Forward pioneered interstellar propulsion concepts including photon propulsion and antimatter rocket propulsion.
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| 14. | The propulsion laboratory also demonstrated experiments on rocket propulsion.
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| 15. | Environmental Aerospace Corporation ( eAc ) was incorporated in 1994 to develop hybrid rocket propulsion systems.
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| 16. | Increasing the amount of propellant risked damaging the occupant's spine, so experiments with rocket propulsion began.
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| 17. | The Squall system includes rocket propulsion technology that Russian designers claim is unmatched in the West.
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| 18. | From 1946 until the mid 1990s, the site was the home of the Rocket Propulsion Establishment.
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| 19. | In 1931, the two began experimenting with various types of rocket propulsion systems, including liquid propellants.
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| 20. | Another beacon is destroyed despite their best intentions, and the fragments are stolen using rocket propulsion.
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