The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 71
... acceleration of one gravity . After just over five minutes it would have built up speed from 18,000 mph to the 24,900 mph needed to get it to the Moon . During the closing stages the motors would probably be throttled back to give a ...
... acceleration of one gravity . After just over five minutes it would have built up speed from 18,000 mph to the 24,900 mph needed to get it to the Moon . During the closing stages the motors would probably be throttled back to give a ...
Pagina 92
... acceleration or the lack of it . Most people who have read novels or seen films on the subject must now be firmly convinced that at take - off the crew of a spaceship would be subjected to an almost unendurable strain — their bodies ...
... acceleration or the lack of it . Most people who have read novels or seen films on the subject must now be firmly convinced that at take - off the crew of a spaceship would be subjected to an almost unendurable strain — their bodies ...
Pagina 93
... acceleration — perhaps as much as three gravities - be required . This would last just over a minute . For the rest of the powered trajectory , from B onwards , the acceleration need be little more than one gravity and the crew would ...
... acceleration — perhaps as much as three gravities - be required . This would last just over a minute . For the rest of the powered trajectory , from B onwards , the acceleration need be little more than one gravity and the crew would ...
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