The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 51
... hundred miles up for a rocket which had to circle the Earth for not more than a few days . In the case of a permanent structure , like the " space - stations " described in Chapter 15 , the minimum height might be five hundred or even a ...
... hundred miles up for a rocket which had to circle the Earth for not more than a few days . In the case of a permanent structure , like the " space - stations " described in Chapter 15 , the minimum height might be five hundred or even a ...
Pagina 54
... hundred miles away from the first vessel , and had an error in speed of a hundred miles an hour in the direction of the satellite , it would have at least an hour in which to correct this by low - powered rocket thrusts . There are ...
... hundred miles away from the first vessel , and had an error in speed of a hundred miles an hour in the direction of the satellite , it would have at least an hour in which to correct this by low - powered rocket thrusts . There are ...
Pagina 117
... hundred miles up from Earth ! Another possibility is worth mentioning here . Because the Moon has no atmosphere ... hundred miles long . But fuel containers , if properly designed , could withstand accelerations of perhaps a hundred ...
... hundred miles up from Earth ! Another possibility is worth mentioning here . Because the Moon has no atmosphere ... hundred miles long . But fuel containers , if properly designed , could withstand accelerations of perhaps a hundred ...
Cuprins
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 3 |
Spaceships Refuelling In Free Orbit | 4 |
The Earth and its Neighbours | 9 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical climb completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure flywheel free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles imagine important interplanetary flight interplanetary travel interstellar involved ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant Propontis 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