The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 71
... course , and such small steering cor- rections as proved necessary could be made at the appropriate times . On the fourth day , the Moon would be so near that its attraction would begin to produce an appreciable effect on the ship's course ...
... course , and such small steering cor- rections as proved necessary could be made at the appropriate times . On the fourth day , the Moon would be so near that its attraction would begin to produce an appreciable effect on the ship's course ...
Pagina 80
... course of a journey it would become apparent that the ship's actual position was beginning to deviate from the orbit it should be following owing to the inevitable errors in the initial period of powered flight . It might then become ...
... course of a journey it would become apparent that the ship's actual position was beginning to deviate from the orbit it should be following owing to the inevitable errors in the initial period of powered flight . It might then become ...
Pagina 111
... course presents no difficulty , but range would be rather short and the service some- what erratic owing to the Moon's rugged nature and near horizon -only two miles away for a man six feet high . One of the first tasks of the ...
... course presents no difficulty , but range would be rather short and the service some- what erratic owing to the Moon's rugged nature and near horizon -only two miles away for a man six feet high . One of the first tasks of the ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
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acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless