The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 39
... problem of retrieving the film will not arise . These pictorial records , although spectacular and exciting ( and also of some meteorological interest ) , are much less im- portant than the information obtained by the instruments ...
... problem of retrieving the film will not arise . These pictorial records , although spectacular and exciting ( and also of some meteorological interest ) , are much less im- portant than the information obtained by the instruments ...
Pagina 64
... problem is getting the heat out of the pile quickly enough to prevent it melting and then to transfer this heat to the propellant . That is the purely engineering problem , and it is an exceedingly difficult one . But there is also the ...
... problem is getting the heat out of the pile quickly enough to prevent it melting and then to transfer this heat to the propellant . That is the purely engineering problem , and it is an exceedingly difficult one . But there is also the ...
Pagina 144
... problem is a " marginal " one . There is little doubt that aircraft could function in the Martian atmosphere , despite its thinness . The fact that gravity has only a third of its terrestrial value would be a great help to flying , and ...
... problem is a " marginal " one . There is little doubt that aircraft could function in the Martian atmosphere , despite its thinness . The fact that gravity has only a third of its terrestrial value would be a great help to flying , and ...
Cuprins
Automatic Rocket Surveying Mars | 3 |
The Earth and its Neighbours | 9 |
The Rocket | 17 |
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acceleration already astronautics astronomers atmosphere body bricks British Astronomical Association 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 involved ionosphere journey Jupiter landing light light-years lunar 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 trolley Uranus voyage weight