The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 45
... voyage , as follows : ( 1 ) The ship must build up sufficient speed to escape from the Earth , and when it has done this must still have enough velocity left to put it into the required " voyage orbit . " This means that it must start ...
... voyage , as follows : ( 1 ) The ship must build up sufficient speed to escape from the Earth , and when it has done this must still have enough velocity left to put it into the required " voyage orbit . " This means that it must start ...
Pagina 82
... voyage and the Earth's gravity was already very feeble , the Sun would be the obvious " landmark " to use - all the ... voyage , by as much as 5,000,000 miles . To correct for this it would be advisable to make a small change of ...
... voyage and the Earth's gravity was already very feeble , the Sun would be the obvious " landmark " to use - all the ... voyage , by as much as 5,000,000 miles . To correct for this it would be advisable to make a small change of ...
Pagina 191
... Voyage to the Moon , 7 " Attitude , " of spaceship , 72 , 81 Aurora , 14 Bergerac , Cyrano de , Voyage to the Moon and Sun , 4 Bernal , Prof. J. D. , The World , The Flesh , and The Devil , 158 173 Braun , Wernher von , 184 Carbon ...
... Voyage to the Moon , 7 " Attitude , " of spaceship , 72 , 81 Aurora , 14 Bergerac , Cyrano de , Voyage to the Moon and Sun , 4 Bernal , Prof. J. D. , The World , The Flesh , and The Devil , 158 173 Braun , Wernher von , 184 Carbon ...
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