The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 65
... spaceship has no equalizing pressure outside it , being in a perfect vacuum , and so it must be strong enough to withstand the full internal pressure . To build a large container which will not burst when there is a force of one ton ...
... spaceship has no equalizing pressure outside it , being in a perfect vacuum , and so it must be strong enough to withstand the full internal pressure . To build a large container which will not burst when there is a force of one ton ...
Pagina 81
... spaceship has nothing to do with its direction or motion : it could be spinning or pointing in space in any manner without affecting its velocity . To alter this , the rockets have to be used in the manner shown in Figure 14 . ( a ) ( b ) ...
... spaceship has nothing to do with its direction or motion : it could be spinning or pointing in space in any manner without affecting its velocity . To alter this , the rockets have to be used in the manner shown in Figure 14 . ( a ) ( b ) ...
Pagina 82
... spaceship to use ? The answer is purely a matter of practical convenience . A spaceship leaving the Earth is primarily interested , at least during the first few hours of flight , in its speed with respect to the Earth and would use ...
... spaceship to use ? The answer is purely a matter of practical convenience . A spaceship leaving the Earth is primarily interested , at least during the first few hours of flight , in its speed with respect to the Earth and would use ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
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acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless