The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 19
... consider how the rocket works and just why it is that it has become of such supreme importance in astronautics . It is often stated that rocket propulsion depends on reaction- to put it colloquially , upon “ pushing " . This is ...
... consider how the rocket works and just why it is that it has become of such supreme importance in astronautics . It is often stated that rocket propulsion depends on reaction- to put it colloquially , upon “ pushing " . This is ...
Pagina 139
... consider a good vacuum they are not of much interest to astronautics . Some of the larger specimens may have a solid core but this probably consists of nothing more than a cluster of meteors . Planets - satellites - asteroids - comets ...
... consider a good vacuum they are not of much interest to astronautics . Some of the larger specimens may have a solid core but this probably consists of nothing more than a cluster of meteors . Planets - satellites - asteroids - comets ...
Pagina 177
... consider the spaceship mentioned on page 176 , which , by converting 90 per cent . of its mass into radiation ... considers a spaceship circumnavigating the Cosmos - assuming that this represents a distance of 10,000 , - 000,000 light ...
... consider the spaceship mentioned on page 176 , which , by converting 90 per cent . of its mass into radiation ... considers a spaceship circumnavigating the Cosmos - assuming that this represents a distance of 10,000 , - 000,000 light ...
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