The Exploration of SpaceTemple Press, 1951 - 198 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 32
... considering the journey from Earth to Moon . ) This " gravitational pit " is shown in cross - section in Figure 9 ... consider what would happen if a body - say a marble — were propelled up its slope at a certain initial speed . Quite ...
... considering the journey from Earth to Moon . ) This " gravitational pit " is shown in cross - section in Figure 9 ... consider what would happen if a body - say a marble — were propelled up its slope at a certain initial speed . Quite ...
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 ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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acceleration already astronautics astronomers atmosphere atomic rockets 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 gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors 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