The Exploration of SpacePocket Books, 1979 - 237 pagini Presents a nonscientific explanation of space exploration and a view of future life on other planets. |
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Pagina 49
... rocket , then a speed equal to that of the exhaust will be reached . If the ratio is 6.4 to 1 , the rocket can travel twice as fast as its exhaust : if 19 to 1 , three times as fast , and so on . It follows , therefore , that the rocket ...
... rocket , then a speed equal to that of the exhaust will be reached . If the ratio is 6.4 to 1 , the rocket can travel twice as fast as its exhaust : if 19 to 1 , three times as fast , and so on . It follows , therefore , that the rocket ...
Pagina 52
... rocket climbing through the atmosphere , cutting down its speed by five or ten percent ( and very much more in the ... rocket rising vertically , is twenty m.p.h. for every second of climb - or 1,200 m.p.h. for every min- ute . These two ...
... rocket climbing through the atmosphere , cutting down its speed by five or ten percent ( and very much more in the ... rocket rising vertically , is twenty m.p.h. for every second of climb - or 1,200 m.p.h. for every min- ute . These two ...
Pagina 62
... rocket . It will be obvious that if we build a rocket capable of carrying a certain payload , and make that payload another rocket carrying the same per- centage of fuel , then when the smaller machine has burned its fuel it will have ...
... rocket . It will be obvious that if we build a rocket capable of carrying a certain payload , and make that payload another rocket carrying the same per- centage of fuel , then when the smaller machine has burned its fuel it will have ...
Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
Drept de autor | |
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acceleration airless already astronautics astronomers atmo atmosphere body bricks build carry certainly Chapter chemical completely conquest of space consider course crew degrees F difficult direction distance Earth energy enormous escape velocity exist exploration extremely fact Figure fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere Jerry Pournelle journey Jupiter landing large number light light-years lunar Mars and Venus Martian means Mercury meteors miles in diameter million minutes missile Moon Moon's motors never normal observed once oxygen payload perhaps planetary planets Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri radar radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spin stars stations surface take-off telescope temperature thousand thrust tion trolley voyage weight weightless