The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 28
... means that final speeds of twice the exhaust speed may be practicable . But the third rocket represents something which any engineer would shudder to contemplate , since it involves squeezing 19 tons of fuel into a structure weighing ...
... means that final speeds of twice the exhaust speed may be practicable . But the third rocket represents something which any engineer would shudder to contemplate , since it involves squeezing 19 tons of fuel into a structure weighing ...
Pagina 175
... means it would be necessary to have an extremely efficient source of nuclear 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 ...
... means it would be necessary to have an extremely efficient source of nuclear 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 ...
Pagina 189
... means of cross- ing space have become involved in current military research because in no other way could they find the necessary support . It is worth quoting here some words written by Professor von Braun on becoming an Honorary ...
... means of cross- ing space have become involved in current military research because in no other way could they find the necessary support . It is worth quoting here some words written by Professor von Braun on becoming an Honorary ...
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