The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 23
... weight , as we might call it , of 344 pounds , or 1.72 times the final , empty weight of the trolley . Now let us be more ambitious . Is it possible for the trolley to carry so much propellant that it could finally travel twice as fast ...
... weight , as we might call it , of 344 pounds , or 1.72 times the final , empty weight of the trolley . Now let us be more ambitious . Is it possible for the trolley to carry so much propellant that it could finally travel twice as fast ...
Pagina 27
... WEIGHT EMPTY WEIGHT EMPTY WEIGHT FUEL WEIGHT FUEL WEIGHT 6.6 1.72 FUEL WEIGHT Figure 6 is an attempt to show in diagrammatic form the effect of a rocket's fuel - weight to empty - weight ratio on its performance . In each case the empty ...
... WEIGHT EMPTY WEIGHT EMPTY WEIGHT FUEL WEIGHT FUEL WEIGHT 6.6 1.72 FUEL WEIGHT Figure 6 is an attempt to show in diagrammatic form the effect of a rocket's fuel - weight to empty - weight ratio on its performance . In each case the empty ...
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 |
Navigation and Communication in Space | 78 |
1 | 118 |
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acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless