The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 73
... direction of motion - which is itself a quite arbitrary quan- tity , depending entirely on the viewpoint of the ... direction could have its rotation stopped by a rocket fired against the direction of spin . This method would be ( 11 ) ...
... direction of motion - which is itself a quite arbitrary quan- tity , depending entirely on the viewpoint of the ... direction could have its rotation stopped by a rocket fired against the direction of spin . This method would be ( 11 ) ...
Pagina 83
... direction , or both , to correct for this . We have already pointed out , on page 73 , that the actual orientation or attitude of a spaceship has nothing to do with its direction of motion : it could be spinning or pointing in space in ...
... direction , or both , to correct for this . We have already pointed out , on page 73 , that the actual orientation or attitude of a spaceship has nothing to do with its direction of motion : it could be spinning or pointing in space in ...
Pagina 96
... direction means that the occupants of the spaceship would feel four times their normal weight - since gravity is adding its own force to that produced by the thrust of the rockets . Now it is possible for a man in normal health to stand ...
... direction means that the occupants of the spaceship would feel four times their normal weight - since gravity is adding its own force to that produced by the thrust of the rockets . Now it is possible for a man in normal health to stand ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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Termeni și expresii frecvente
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