The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 45
... 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 , this distance is as negligible compared with the total ...
... 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 , this distance is as negligible compared with the total ...
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 . A ( a ) ( b ) Figure 14. Altering the Velocity of a Spaceship Suppose that the velocity of the ship is represented , in magnitude and direction ...
... velocity . To alter this , the rockets have to be used in the manner shown in Figure 14 . A ( a ) ( b ) Figure 14. Altering the Velocity of a Spaceship Suppose that the velocity of the ship is represented , in magnitude and direction ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association 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 gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors 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 trolley Uranus voyage weight