The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 23
... weight of the trolley . Now let us be more ambitious . Is it possible for the trolley to carry so much propellant ... weight of the trolley - 1,280 pounds of bricks in all . Need we stop here ? In theory , no . As long as the final empty ...
... weight of the trolley . Now let us be more ambitious . Is it possible for the trolley to carry so much propellant ... weight of the trolley - 1,280 pounds of bricks in all . Need we stop here ? In theory , no . As long as the final empty ...
Pagina 27
... WEIGHT FUEL WEIGHT ROCKET REACHES 2 TIMES EXHAUST SPEED EMPTY WEIGHT FUEL WEIGHT 6.4 1.72 EMPTY WEIGHT FUEL WEIGHT 19 Figure 7 is an attempt to show in diagrammatic form the effect of a rocket's fuel - weight to empty - weight ratio on ...
... WEIGHT FUEL WEIGHT ROCKET REACHES 2 TIMES EXHAUST SPEED EMPTY WEIGHT FUEL WEIGHT 6.4 1.72 EMPTY WEIGHT FUEL WEIGHT 19 Figure 7 is an attempt to show in diagrammatic form the effect of a rocket's fuel - weight to empty - weight ratio on ...
Pagina 36
... weight , which means that each step will be about twenty times the weight of the steps above . For a one - ton final payload , therefore , the total starting weight is likely to go up in this sort of ratio : Single - step : 20 tons ...
... weight , which means that each step will be about twenty times the weight of the steps above . For a one - ton final payload , therefore , the total starting weight is likely to go up in this sort of ratio : Single - step : 20 tons ...
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