The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 61
... energy has been released only in the forms of radiation and heat . It can be produced at all power levels from that ... energy of heat into energy of motion . The conventional rocket , of course , does exactly this . During combustion ...
... energy has been released only in the forms of radiation and heat . It can be produced at all power levels from that ... energy of heat into energy of motion . The conventional rocket , of course , does exactly this . During combustion ...
Pagina 170
... energy : anything like our present atomic power plants would be completely useless . Some means would be required of releasing a large percentage of the energy of matter ( not merely the 0.1 per cent we can liberate today ) and then ...
... energy : anything like our present atomic power plants would be completely useless . Some means would be required of releasing a large percentage of the energy of matter ( not merely the 0.1 per cent we can liberate today ) and then ...
Pagina 174
... energy : the only prob- lem was to obtain this energy , and like all purely technical prob- lems , this was eventually solved . But even the disintegration of all the matter in the Universe would not provide enough energy to enable a ...
... energy : the only prob- lem was to obtain this energy , and like all purely technical prob- lems , this was eventually solved . But even the disintegration of all the matter in the Universe would not provide enough energy to enable a ...
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