The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 47
... fall down than can the Moon . SHIP'S ORIGINAL ORBIT SECOND CONTACT WITH ATMOSPHERE FIRST CONTACT WITH ATMOSPHERE X ROCKET BRAKING APPLIED ATMOSPHERE . Figure 11. Returning to Earth by Air - Braking This is where the Earth's atmosphere ...
... fall down than can the Moon . SHIP'S ORIGINAL ORBIT SECOND CONTACT WITH ATMOSPHERE FIRST CONTACT WITH ATMOSPHERE X ROCKET BRAKING APPLIED ATMOSPHERE . Figure 11. Returning to Earth by Air - Braking This is where the Earth's atmosphere ...
Pagina 49
... fall back to Earth along a line extending eastwards from the launching site , the actual points of impact depending on the height of release and the velocities at separation . In extreme cases , the last step but one might go almost ...
... fall back to Earth along a line extending eastwards from the launching site , the actual points of impact depending on the height of release and the velocities at separation . In extreme cases , the last step but one might go almost ...
Pagina 50
... fall , but this is perhaps an unfortunate phrase because the word “ fall ” usually implies " downwards . " The spaceship , as we have seen , could be moving upwards or horizontally while under the influence of gravity alone . So perhaps ...
... fall , but this is perhaps an unfortunate phrase because the word “ fall ” usually implies " downwards . " The spaceship , as we have seen , could be moving upwards or horizontally while under the influence of gravity alone . So perhaps ...
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