| 11. | Another method is to use an oxidizer that can also be used as a monopropellant.
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| 12. | When mixed with a fuel and stored before use, it becomes a mixed monopropellant.
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| 13. | Attitude control and ullage are provided by means of hydrazine monopropellant thrusters located around the stage.
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| 14. | The "'Pegasus "'is an stages and an optional monopropellant fourth stage.
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| 15. | The HAPS ( Hydrazine Auxiliary Propulsion System ) is powered by three restartable, monopropellant hydrazine thrusters.
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| 16. | Propulsion is by a hydrazine monopropellant system, containing 544 kg of fuel in four exposed tanks.
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| 17. | Engineers choose monopropellant systems when the need for simplicity and reliability outweigh the need for high delivered impulse.
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| 18. | LMP-103S has 6 % higher specific impulse and 30 % higher impulse density than hydrazine monopropellant.
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| 19. | Propulsion for midcourse maneuvers was supplied by a monopropellant ( anhydrous hydrazine ) 225 N retro-rocket.
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| 20. | Their lunar rover was named European Lunar Lander and used a monopropellant rocket engine for landing and hovering.
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