The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 24
... important example , is considerably more complicated but also capable of much higher performances . Instead of using solid propellants stored and burned in the same container , it uses liquid fuels which are kept in separate tanks and ...
... important example , is considerably more complicated but also capable of much higher performances . Instead of using solid propellants stored and burned in the same container , it uses liquid fuels which are kept in separate tanks and ...
Pagina 26
... important rôle in the con- quest of space , since almost certainly the first spaceships will be purely automatic - and thus expendable . The " exhaust speed " of modern liquid - fuelled rockets is of the order of 5,000 m.p.h. or even ...
... important rôle in the con- quest of space , since almost certainly the first spaceships will be purely automatic - and thus expendable . The " exhaust speed " of modern liquid - fuelled rockets is of the order of 5,000 m.p.h. or even ...
Pagina 45
... important difference that whereas the shell acquires its velocity in a few feet under an enormous acceleration , the spaceship has thousands of miles in which to build up speed at a rate which human passengers could withstand . Still ...
... important difference that whereas the shell acquires its velocity in a few feet under an enormous acceleration , the spaceship has thousands of miles in which to build up speed at a rate which human passengers could withstand . Still ...
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