The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 77
... velocity ( 5,200 m.p.h. ) , which , it will be remembered , could be reached in four minutes under only one gravity . It would then travel back to Earth along an orbit similar to that which it traversed on the outward voyage , and ...
... velocity ( 5,200 m.p.h. ) , which , it will be remembered , could be reached in four minutes under only one gravity . It would then travel back to Earth along an orbit similar to that which it traversed on the outward voyage , and ...
Pagina 83
... velocity . To alter this , the rockets have to be used in the manner shown in Figure 14 . Α ' ( b ) Figure 14. Altering the Velocity of a Spaceship Suppose that the velocity of the ship is represented , in mag- nitude and direction , by ...
... velocity . To alter this , the rockets have to be used in the manner shown in Figure 14 . Α ' ( b ) Figure 14. Altering the Velocity of a Spaceship Suppose that the velocity of the ship is represented , in mag- nitude and direction , by ...
Pagina 95
... velocity . However , if the ship could build up all its speed in the horizontal direction , gravity would not produce any loss of speed whatsoever and one could reach escape velocity in as leisurely a fashion as one pleased . This is ...
... velocity . However , if the ship could build up all its speed in the horizontal direction , gravity would not produce any loss of speed whatsoever and one could reach escape velocity in as leisurely a fashion as one pleased . This is ...
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