| 41. | Multi-stage rockets are capable of attaining escape velocity from Earth and therefore can achieve unlimited maximum altitude.
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| 42. | The GX design uses a two-stage rocket.
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| 43. | Development of the first-stage rocket engine for the Navaho began with two refurbished V-2 engines in 1947.
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| 44. | The interceptor is a two-stage rocket that carries as much as 42, 500 pounds of solid propellant.
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| 45. | Last August, it launched a three-stage rocket that flew over Japan and landed in the Pacific Ocean.
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| 46. | Last August, North Korea launched a three-stage rocket that flew over Japan and landed in the Pacific Ocean.
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| 47. | It was the United States first two-stage rocket and formed an integral part of their strategic deterrent force.
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| 48. | Multi-stage rockets are much more complicated.
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| 49. | Hunter was a proponent of single-stage rocket ships and laser battle stations in space to defend satellites if necessary.
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| 50. | TV-1 was a two-stage rocket.
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