The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 50
... remain wholly inside the atmosphere . It could then make a landing as a glider , slowly shedding its speed by air resistance . This operation ( called " entry by braking ellipses " ) is shown in Figure 11. It is of enormous importance ...
... remain wholly inside the atmosphere . It could then make a landing as a glider , slowly shedding its speed by air resistance . This operation ( called " entry by braking ellipses " ) is shown in Figure 11. It is of enormous importance ...
Pagina 149
... remain perpetually in a stable , circular orbit , without requiring any power , and making a complete rotation round the Earth in a little over ninety minutes . At greater heights , the orbital speed needed is less and so the period of ...
... remain perpetually in a stable , circular orbit , without requiring any power , and making a complete rotation round the Earth in a little over ninety minutes . At greater heights , the orbital speed needed is less and so the period of ...
Pagina 150
Arthur Charles Clarke. the region immediately around the Poles would remain invisible from such a satellite in the ... remain rigid to a few millionths of an inch , no matter how the enormously heavy instrument was tilted and revolved ...
Arthur Charles Clarke. the region immediately around the Poles would remain invisible from such a satellite in the ... remain rigid to a few millionths of an inch , no matter how the enormously heavy instrument was tilted and revolved ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust tion trolley Uranus voyage weight