The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 22
... increase during the experiment - its acceleration does as well . The analogy with the rocket should now be clear , the main difference between the two cases being that a rocket ejects matter continuously and not in separate lumps , so ...
... increase during the experiment - its acceleration does as well . The analogy with the rocket should now be clear , the main difference between the two cases being that a rocket ejects matter continuously and not in separate lumps , so ...
Pagina 51
... increasing sense of weight as one fell towards another planet . There would be an increasing gravitational force and an increasing acceleration , but the pas- sengers in the spaceship would feel nothing at all until the rockets were ...
... increasing sense of weight as one fell towards another planet . There would be an increasing gravitational force and an increasing acceleration , but the pas- sengers in the spaceship would feel nothing at all until the rockets were ...
Pagina 171
... increase the time of transit by a considerable factor . Indeed , on the “ shorter " ( ! ) interstellar flights it would be neces- sary to start decelerating again well before the speed of light had been approached . As is now well known ...
... increase the time of transit by a considerable factor . Indeed , on the “ shorter " ( ! ) interstellar flights it would be neces- sary to start decelerating again well before the speed of light had been approached . As is now well known ...
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