The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 45
... journey as the length of the gun barrel is compared with the trajectory of the shell , so when we are considering interplanetary journeys we can forget about the initial period of acceleration and imagine that the spaceship starts with ...
... journey as the length of the gun barrel is compared with the trajectory of the shell , so when we are considering interplanetary journeys we can forget about the initial period of acceleration and imagine that the spaceship starts with ...
Pagina 71
... journey to the Moon . The human race is remarkably fortunate in having so near at hand a full - sized world with which to experiment : before we aim at the planets , we will have had a chance of perfecting our astronautical techniques ...
... journey to the Moon . The human race is remarkably fortunate in having so near at hand a full - sized world with which to experiment : before we aim at the planets , we will have had a chance of perfecting our astronautical techniques ...
Pagina 77
... journey down to the Moon and then lift it up again . It remains to be seen , however , whether this idea will prove to be practicable when allowance is made for all the complications it involves , and the restriction it puts on the ...
... journey down to the Moon and then lift it up again . It remains to be seen , however , whether this idea will prove to be practicable when allowance is made for all the complications it involves , and the restriction it puts on the ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 4 |
Spaceships Refuelling In Free Orbit | 4 |
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Termeni și expresii frecvente
acceleration already asteroids astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association build carry certainly Chapter chemical 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 ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach 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